Jan 11, 2016 · 1. An old Chevy mechanic told me that sometimes the housing will become egg-shaped over the years and a new seal won't do any good. As long as the housing and cover are clean, you should get a leak-free seal. Oct 5, 2018 · For example, the area behind the rear caps in a stock GM 12-bolt casting is heavily scalloped (more or less hollow). May 2, 2021 · 2001 2500hd 4wd extended cab ls, s&b cai, 4" stainless steel exhaust, efi live from atp trucks, edge cts, ppe boost valve, banks intercooler pipe, air dog ii 165, rebuilt tranny with suncoast kit, transgo shiftkit and billit torque converter, new upgraded tailshaft, pump rub fix on transfer with new aluminum tail shaft, new tow mirrors, new gage heavy duty front and rear bumpers, beans sump Jun 10, 2024 · A rear differential is colloquially called a “rear end” or rear diff by some people. Yep, my differential fluid is all good. I know this because I jacked and chalked the vehicle and let the axle spin while the tires were off the ground. Four-wheel and all-wheel drive vehicles include a rear differential as well as a front differential that is driven by a transfer case and driveshaft to turn straight axles or CV shafts that drive the front wheels. The purpose of the axle seal is to keep transmission fluid from leaking. Does your rear diff leak gear oil everywhere? Do you keep installing a new pinion seal and having the same problem? Everyone has or will have this problem wh Mar 12, 2018 · The fourth-generation F-body is equipped with GM's 7. He said wasn't major leak, but would be $1400 to repair. However, I checked the rear diff fluid and it was full, and have been checking it constantly. A rear differential leak can cause severe damage to your vehicle and should not be ignored. The differential housing seal prevents oil from escaping at the mating surfaces between sections. A "break in the fluid" doesn't make any sense - that means you have a leak. 1. The low transmission fluid level is another reason to suspect a leak. There is no oil on skid plate nor on garage floor. Various signals that a gasket is failing are usually present and shouldn’t be ignored. Average repair cost is $430 at 73,350 miles. There is a little "weeping" on boot leading to rear diff. An 8. On an old vehicle, this might be a fine solution - just check it whenever you change the engine oil. There are two main ways to check for a leaking differential. Broken Differential. I ended up taking it back to the Chevy dealer and they replaced a total of 6 seals and a harness (whatever that is). The rear differential takes just shy of 3 qts of SAE Synthetic Mar 5, 2014 · I changed the oil in my rear diff in my 2006 Silverado (1/2 ton 4 door shortbed 4x4) and noticed that it is leaking now. Differential leaks usually come from the rear differential cover, the pinion seal attached to the drive shaft, or the axle seals. Anyway, I snugged them back up and the leak is gone. I checked the bolts and some of them had gotten loose. Its a ONE WAY check valve. I was quoted $4,600 and have no idea if this is a fair or accurate price. The TORSEN differential distributes the engine's power to the wheel with the most traction, reacting instantly before any wheel slip can occur. Remove the three rear axle bolts and nut. How did these two places "check" the transfer case and rear diff? It's basically a fill plug and a drain plug. Your car’s front differential is a hard-working part, and like any busy bee, it can sometimes spring a leak. Now it only leaks after driving the vehicle. I may be wrong, but I picture this area to be axles running from the outer wheel to the differential, held in place by special pins near the gears. I've got a 2006 2500 HD Chevy Duramax w/56770 miles and the rear diff is leaking where the axle tubes are pressed into the center section. Is this a simple gasket replacement? or something more serious? Mar 1, 2019 · I have a fluid leak coming from the left side of the rear differential. Noticed a few drops on the garage floor and decided to investigate. Additionally, damage to the differential gasket, pinion seals, and axle side seals can also cause differential fluid leakage. These include: checking the fluids regularly, keeping the area around the differential clean, inspecting the seals regularly, and scheduling regular maintenance Mar 13, 2018 · When looking at the housing from the rear, an 8. Lower the rear axle enough to gain access to the rear differential vent, located on the top of the axle. Another is the limitation of the Aug 19, 2021 · Check to see if the differential vent is plugged. Oct 24, 2023 · First: is it safe to drive with an axle seal leak? The axle seal connects the axle to the transmission and keeps the transmission fluid from leaking. We’ll also provide tips on how to identify Feb 12, 2015 · I brought my 2010 Traverse to the dealer due to an odd noise and was told that the rear differential fluid was low (nearly empty) and that everything was ground down to the extent that a complete rear end overhaul was required. If left unattended, a leak in the rear differential can lead to more serious problems, such as a complete failure of the differential. ( or JB weld ). Causes of Rear Main Seal Oil Leaks. Especially a G80. Over time it wore the seal out. Apr 13, 2009 · I was told by the dealer that my front differential carrier was leaking. Any help would be greatly appeciated. 5 will have two squared-off chunks of casting hanging on each side near the bottom of the differential. Signs of a Front Differential Leak. All Wheel Drive. Jan 9, 2014 · The SSR will feature a TORSEN Traction Differential on the rear axle. Obviously, I am quite disappointed by this, especially since the car has such low The differential cover must be sealed to the housing. If it is just a "seep", or even a very slow leak (where drips are generated, but very slowly), then short/medium term, you can just check the fluid and top it off periodically. We have the extended warranty so all but $100 deductible is covered. Even my 99' Bravada and my father's 96' LT1 Corvette have the same issues. 2 factory covers also have a strange protrusion at the top. The severity of the leak will affect how safe it is to drive. The most common cause of a rear differential pinion seal leak is wear and tear. Since the caliper is not leaking, I concluded that it can only be the axle seal. Front-wheel drive cars have a front-end differential (sometimes called a transaxle). The fluid had splattered all over by the wind and was dripping from the spare tire heat shield. So I replaced them, while I was rebuilding my Trac-Lok. Nov 4, 2021 · A rear-end differential is found on cars that are rear-wheel drive. Here a few things to look for if you suspect something’s off: Worn carrier bearings. Doesn't seem to be any fluid anywhere else around/ahead/above. What Are The Symptoms of a Front Diff Leak or a Differential Leak? Feb 16, 2024 · Therefore, the easiest way to detect it is to check the rear of the engine for any visible signs of a leak. I tend to only use the GM non-LS 75W90 for the rear diff, just to keep the G80 happy. Smelled like gear oil as far as I could tell. If your vehicle is rear-wheel drive, it has a differential in the rear that connects to the transmission with a driveshaft. Dec 28, 2023 · The front diff is basically an open differential (unless equipped with ZR2 lockers) so any old 75W90 will work. I'm taking it back in friday. I think this should be covered under the 5 yr. Normal wear and tear can cause issues with the rear main seal, and certain problems can even lead to a leak or failure. In my case, repair of the original vent tube was too risk and of last month I noticed a small leak on my rear differential seal on the left side. Traces of oil on the underside of the differential May 9, 2009 · Really need some help here, the service manager does'nt have a clue if this is a warranty repair or not. Jul 2, 2007 · The 2002 Ford Explorer has 14 problems reported for rear differential leak. If you let it sit it is fine. It uses a rubber lip-type seal to keep gear lube from slipping past the pinion flange during normal operation. The hypoid action of the rear diff tries to force the carrier backward, out of the housing. Any advice from anyone is certainly appreciated. Differential has low fluid Sep 15, 2023 · My truck has slowly began leaking gear oil out of the front differential. Last night, I noticed some gear oil on my driveway and upon searching, found that the rear differential is leaking. Im more worried about how long it's been leaking and totally perplexed at both sides leaking. You won’t need to replace the brake parts if no fluid leaked onto parts like the emergency brake shoes and they’re in Dec 2, 2022 · If you’re driving a car and notice that your rear differential is making a noise, it’s important to take action. I thought it was coming from there but it is not. #1 – Differential Housing Seal Leak. The fill/drain plugs are accesible with the skidplate in place. This blog covers a simple process for diagnosing the rear differential for a differential leak, pinion seal leak, or axle seal leak, and how to fix it if the rear is leaking. May 12, 2023 · The other day when I left for work I noticed a damp spot directly below where my rear diff sits on my driveway. Why go to all of this trouble? Simple. Jul 21, 2021 · A typical all-wheel drive vehicle with a front-wheel drive-biased layout has a transaxle (with integrated differential) in the front and a stand-alone differential in the rear. Dirty Differential Fluid: Another common cause of a rear differential pinion seal leak is dirty differential fluid. Overfilling the axle with oil can also raise the pressure enough to cause leaks. I was wondering if anyone else had this problem. Jul 13, 2010 · 5. Dec 13, 2020 · Once the gasket fails, you have a leak. Oct 28, 2023 · Center Differential: This one’s the mediator for all-wheel-drive (AWD) and four-wheel-drive (4WD) vehicles. It was leaking enough to drip on the garage floor but not a lot. ) were leaking. IF,,, that vent is stuck SHUT, it will cause the diff to pressureize and leak May 2, 2023 · When the gasket fails, it can cause the differential to leak, which may put it at risk of running low on fluid and suffering serious damage. It's got to be coming from the bearing seal. Nov 21, 2010 · I still have grease leaking out and flipping around to the trunk lid and rear bumper. I tought I didn't installed it correctly so I bought another one and had it installed by the transmission tech at the dealership where I work (dodge but a seal is a seal). All wheel drive vehicles have three differentials: a front, rear, and center differential. Mar 14, 2016 · '16 Z71 EC GMPP Exhaust - K&N (Stock CAI) - Hypertech 89 Octane Tune Hellwig Anti Sway Bar - Rear Morimoto HID conversion 5500K Sep 30, 2005 · Anyone have problems with a leaking front differential? The leak is on the left side of the diff. Aug 20, 2018 · Check out these common problems with differentials, along with the serious consequences that can result if they’re left unaddressed. This truck is rarely driven, but I want to keep it in excellent condition. Discard the old vent cap and spring. 56 sitting on 36s 72 chevelle 468 w/ cross ram, 5 speed, 12 bolt posi 4. Both front and rear We would like to show you a description here but the site won’t allow us. Usually, if you have a leak at the rear of your vehicle and it’s rear-wheel drive or all-wheel drive, it means your differential is leaking. LOCKING DIFFERENTIAL LUBRICANT (SERVICE INFORMATION) #91-4-109 SUBJECT: LOCKING DIFFERENTIAL (G80) LUBRICANT - (SERVICE INFORMATION) VEHICLES AFFECTED: ALL LIGHT TRUCKS EQUIPPED WITH G80 REAR AXLE ALL YEARS Jan 29, 2008 · I would also say, from experience, you don't need to be cralwing under the car to check for leaks all the time. Depending on the size of the leak, it may be okay to drive with a leaking axle seal but you probably won’t get very far. There is a cotter pin in it also. This can be a small wet spot, or actual drops of oil. Dec 20, 2022 · Preventing Rear Differential Leaks. Is it safe to drive with a leaking axle seal? It depends on the severity of the leak. It is linked to the transmission with a driveshaft. Feb 10, 2020 · Those of you with correct-wheel-drive (or 4WD/AWD!) may notice some odd puddles on the driveway at the rear of your vehicle, or some oily grunge in its under Jul 31, 2005 · You need to pop off the front skidplate of a Z71 truck to allow the fluid to drain. They said it was old Oct 6, 2009 · It is not dripping at all. There's a GM service bulletin that's been floating around the internet for a long time about this issue. May 26, 2005 · C5 General - 2000 Differential Leaking (2nd time) - At 20K miles the drivers side differential side cover began a small drip. 13 sitting on 44s 66 chevy 3/4 ton 4X4 350, SM420, T221, D44, HO72 4. Now almost one year to the day (42K miles) it's leaking again in the same spot. 5-inch 10-bolt rear axle. A diagram highlighting the main causes of rear main seal oil leaks. Jan 11, 2016 · To check for a leak, follow the drive shaft to the rear axle, then look around the yoke for fresh oil. Differential oil usually has a distinctive smell. Over time, the pinion seal wears and can become dry, cracked, or otherwise damaged, allowing fluid to leak out due to pinion bearing preload. Dec 2, 2023 · I have a 2000 Chevrolet Silverado in “work truck” trim, which is 2WD with a 5. You can use a paper gasket, RTV silicone, or a combination of the two; any of these methods is sufficient. While some Dec 6, 2010 · Just dropped my Nitro off at the shop because of a serious leak coming from the rear differential. May 8, 2024 · The following are several potential causes of a leaking front differential. Depending on the size of the leak, it may be okay to drive with a leaking axle seal, but not for very long. Due to normal wear and tear, it is not uncommon for pinion shaft oil seals to leak. Most 8. If the leak results in significant fluid loss, the leaking component (transmission, differential or transfer unit) could eventually get damaged. They usually seal the axle shafts against the differential and prevent fluid from leaking out of the differential as it operates. However, there are some things that you can do to prevent leaks from happening in the first place. I will be calling the dealer on Monday to make an appointment. So I replaced the pinion seal (See here). Jun 4, 2019 · via Hagerty DIY ~ Here is the ONLY WAY to fix a leaking GM 12-bolt differential pinion seal… Does your rear differential leak gear oil everywhere? Do you keep installing a new pinion seal and having the same problem? Everyone has or will have this problem when installing a new pinion seal in your 12-bolt GM rear differential, but Hagerty’s Mar 19, 2018 · Is the rear pinion seal where the drive shaft comes out of the transmission or where the drive shaft goes into the rear differential? My dealer said it is leaking and would be covered under warranty but I want to know exactly what it is, where it is and what is involved in replacing it so I can have an idea what to look for before and after it gets done. After talking with a friend, he was Aug 3, 2021 · If you notice oil spots under the rear of your car or truck or dirt and a greasy film is collecting on the undercarriage, you may have a rear differential leak. Differential gear Apr 10, 2023 · 3) Leaks. Usually a bad or failing differential gasket will produce a few symptoms that can alert the driver of a potential problem that should be serviced. Once it starts leaking, you will notice the leak around the differential. Jan 8, 2023 · Whether it be a “rear differential leak” or a “front differential leak,” if you have a leak, you run the risk of running out of fluid and suffering serious damage. If you find fluid is seeping from a differential or axle seal, you might only have to replace the seal. As soon as you notice this, contact the professionals at YourMechanic to have the pinion seal replaced. 10 87 chevy 1 ton 4X4, 350tbi, TH400, NP205 twinstick, D60 power-lok, 14 bolt detroit 4. I replaced it, after a few miles I noticed that it was leaking again. May 22, 2007 · Thin film of it. 5 2500 QCSB 6sp 4x4: 5" Exhaust, Isspro EV2 gauges, SB DD3250-6, Banks Intake, AFE Momentum CAI, Pac Brake, BD 2-piece manifold, 3" Carli Backcountry level with full leafs, custom front/rear bumpers, Smarty S06 POD, Chevy tow mirror conversion, SRT-10 Hurst shifter , BD short shifter kit, Fuel filters, custom onboard air setup, Android HU/sound system, D2S Projector Retrofit Oct 20, 2022 · it is in the center of the rear axle. 10 sitting on 33s or 37s Nov 18, 2022 · Difference Between Leaking and Seeping Fluid from a Rear Axle or Differential Seal No Signs of Excessive Fluid Leaking. This is particularly true if the f=differential is overfilled. Sometimes this oil leak might be very small to the level that you won't see any drips, and your best guess would be looking at the component itself and seeing some wet signals. Jan 30, 2024 · The rear differential gasket is the gasket that seals the differential housing. When i crawled under to give her a oil change i noticed it was leaking again, so off to the dealer I went. If you notice fresh oil, you have a pinion seal leak. The TORSEN system for the SSR is a close relative to the rear differential developed for the Chevrolet Camaro and is the technology Jul 17, 2022 · When I took apart the right rear brake assembly, I noticed that oil had gotten in between the hub flange and the rotor hat. Sep 19, 2015 · Ithink the big nut is 1 5/8". A damaged differential likely dislodges the seals, and a leak can be the consequence (especially a rear differential pinion seal leak). No noticable change in the fluid level. Apr 1, 2005 · Hello All, So, I've been having some pretty bad luck with my rear axle lately. Apr 3, 2020 · 2004. Is there a magic fix for Jan 7, 2016 · The differential output seals are the seals located at the output shafts of a vehicle’s differential. The rear axle seal is responsible for sealing the differential gear oil inside the differential housing. 8. It continued to leak so I replaced the CV axle altogether. Generally, a failing gasket will produce some symptoms that shouldn’t be ignored. Once again, you’ll have to put your eyes on the leak to determine its origin. And as Jan 5, 2022 · Front- and rear-wheel drive vehicles. This can be dangerous where the brakes are mounted next to the differential casing. I didn't even drive it until checking that. Although it sounds minor, a leaking differential can cause serious problems. There’s also a viscous coupler that prevents driveline windup. . They worked on the vent tube twice and replaced the side seal once. Jul 4, 2010 · 51 dodge M37 383, NP435, NP200, D70 power-lok front D70 detroit rear 5. THIS should be A SERIOUS SAFETY RECALL ISSUE. Dealer called and found Front Axel leak, Oil pan leak and the rear to be leaking. 4 bolts. Pry the top of the metal rear differential vent cap off. 3L engine and automatic transmission. Leaks can occur at the pinion gear seals, and as the leaking worsens, it allows dirt and oil to collect below the carrier or the pinion gear areas. 6. May 7, 2011 · I just crawled under the Traverse today and noticed that the seal where the driveshaft enters the rear differential is leaking gear oil. 7. A bad rear differential can cause a lot of different issues, and it’s crucial that you get it fixed as soon as possible. It is only leaking out the front and then the oil is getting sprayed all over the place by the spinning driveline. Jun 17, 2022 · The rear differential can suffer costly damage if it progresses to a serious leak where the gears do not have ample lubrication. But now Jun 11, 2019 · Rear differential leaking from cover The 1967 - 1972 Chevrolet & GMC Pickups Message Board 1968 Chevrolet C/10 LWB - 327, TH350 - 4/5 Drop 06-10-2019, 01:09 PM A rear differential leak can be a serious problem that can lead to expensive repairs. Nov 21, 2012 · I agree its not a big leak, but it did leave two spots on the driveway which is how I noticed it. Place a jack stand under the rear axle assembly for support. Jan 4, 2011 · Hey everybody - I noticed a small pool on my driveway coming from my rear differential of my 2005 Chevy Equinox. I have done the differential vent mod, with a filter on the end. Symptoms to Watch For Apr 13, 2016 · Differential fluid often looks just like motor oil. Some people refer to this differential as the rear diff or simply the rear end. Cracks in seals and gaskets can also allow dirt and grime to enter the housing, which can cause internal damage also. Aug 13, 2014 · Something else to consider and check is, Your differential has a Vent on top if the case. I suppose it's actually a hub sealsince it's a full floater rear end. That leak- whether it’s a front diff leak or a rear differential leak- can put you at risk of running low on fluid and suffering some serious damage. If i recall correctly, I used 75w-90 and had to replace the gasket. 5 quarts. If there is grayish or light brown fluid on the garage floor beneath the back of your truck, then that would indicate your differential fluid is leaking. A rear axle seal is a seal located between the rear axle and the differential of a vehicle. A vehicle with rear-wheel drive has a rear differential that sits between the rear wheels and connects to the transmission through the drive shaft. It should have 3. Oil leaking on to the brakes can impair their efficiency seriously. A leaking rear differential can be prevented by regularly inspecting the fluid levels, checking for any signs of wear or damage, and ensuring the seals are intact. First guess would be the axle disconnect between the oil pan and the right-side CV axle. Unfortunately it was still leaking, but evidently not from the axle seals. Chevrolet replaced the side cover, O ring, sealant etc. Dec 30, 2015 · An axle seal is the part of the vehicle that connects the axle to the rear differential, or the transmission. Cars with four-wheel drive have both, which means you’re prone to a rear differential leak as well as front differential leaks. Jan 26, 2024 · A rear differential leak refers to differential fluid leaking from the rear differential housing of a vehicle. Feb 12, 2023 · A leak in the rear differential can cause serious problems, such as a loss of oil, which can lead to damage to the gears and bearings inside the differential. Dec 29, 2013 · These rear ends call for a synthetic gear lube, and specifically do not want the friction modifier. They just called and informed me the cause is a plastic shopping bag got caught in the drive shaft and worked its way into the seal on the differential. Pinion seal is kind of a pain in the rear of a job so if the dealer will do it for free, I'll take it. First, I thought that my diff was leaking from the axle seals. It divides power between the front and rear axles to create even distribution. 2. (See here). Was wondering what is involved for the DIY to replace this seal on an 06, 2x4? Do you just have to pull the drive shaft or do you have to go through the inside of the differential? I had done a search but only found: cover removal/draining or front differential leaks, nothing on the rear. Oct 27, 2006 · Typically, when a vehicle sits for a while, the rear main seal "shrinks" and begins to leak. If the rear cover is tweaked or bent at all, a paper gasket will likely leak. Your only problem will be getting it off without an air tool. immediately before it is so low that the unit is trashed before the seal is fixed. 2 (shown) will have the same contour as the cover. S. The center differential splits the torque between the front and rear differential inputs, which each then split the remaining torque from left to right. Aug 19, 2017 · Do not use any friction modifiers or additives in the gear oil of any GMT400 differential. Mar 30, 2009 · I am the second owner but have all of the maintenance records from the previous owner showing that he had it serviced regularly at the dealership. Jul 7, 2012 · Well, the 75W-90 Hypoid Gear Oil in the Transfer Case (there is no front differential) and the Rear Differential is a clear to golden hue (color) to start. Mar 4, 2024 · I had changed my diff oil not long ago then recently noticed some minor leaking around the cover. Is not leaking from the from the rear cover or axle seal. Online Jun 11, 2020 · Definitely looks like the pinion seal to me. Regular Maintenance for Your Rear Differential Mar 15, 2020 · See the photo. Leaks around the differential. Aug 3, 2022 · No 4WD is almost certainly NOT related to the differential leak at the left CV axle. Feb 27, 2023 · In fact, the term transaxle can be used interchangeably in these vehicles to describe the differential or transmission. Check for leaking fluids around the rear differential gasket and the rear axle. Differential gear oil helps to lubricate the gears and bearings inside the differential and keeps them cool by dissipating heat. All my friends say it is probably nothing important. Jan 7, 2016 · When the gasket fails, it can cause the differential to leak, which may put it at risk of running low on fluid and suffering serious damage. Had a Chevy Astro Apr 25, 2012 · The rear differential is leaking out the front where the driveline attaches. He recommended we change the oil out in the rear and because it's synthetic, it would be an additional $150. Over time, normal wear and age can cause these seals to leak. I should think it would be covered under powertrain, and would definitely try to get it done. This will leave it about 1/2" below the threads of the fill plug. But it could also be a failed transfer case. I am not sure if anybody has had a similar issue or has done a repair for this? I haven't been able to get under it yet but I am not sure if it has a gasket like a traditional diff or . After removeing the yoke (you might need a puller) you will need to remove the 5 bolts & remove the flange. or 100k warranty. To Chevy's credit, they covered the repair under warranty in which my vehicle was 20K out of warranty and with no ext. Jun 15, 2017 · So I look at rear noise threads. I am concerned about the loss of this oil, and also don’t like having leaks. Rear-wheel drive vehicles use an independent differential located between the two rear wheels. take it off, scrape off the old gasket, install a new one, put oil back in and burn rubber! Sep 16, 2005 · Well, I had an unfortunate leak also that were about a dime size on the driver side rear diff. On the other hand, if the leak is bad, you might see some oil puddles under your car. A power transfer unit (PTU) divides engine torque between the transaxle and rear differential. There was only one product I added that helped- Lucas Rear differential stop leak. No way did I forget to tighten them initially. Replacing A Pinion Seal With 8 Detailed Mar 17, 2021 · Oil leak The most obvious symptom of a bad differential output seal is an oil leak. So don't take the gauge on here too serious. Symptoms of a Damaged Differential . It lets pressure and gasses OUT but should seal shut when the diff cools off. DO NOT Overfill it How to fix the breather vent on the rear differential on most cars, this is one a Rav4 as an example, but very common on these models. :rofl: Edit : My forum status made it to firing on one cylinder from posting mainly B. Closer inspection revealed the left half of the back covered with oil/lubricant. You could do it without removing the plate, but it could make a big mess. Some rear-wheel-drive cars with independent rear suspension may leak oil from the drive-shaft oil seals. So far my only option is replace the differential with a good one. Any insight would be very welcome. I added it to the differential, and for me, that stopped the leak. warranty. If so pressure developed due to warming of the fluid can force the fluid out. The fix is to use a billet main cap. Other components may show signs of damage when your vehicle has differential problems. This compromises strength. But just sucks not hearing it. Most often, it’s a rear differential repair that’s needed as opposed to a front differential. But I just drained my front diff today to see what the fluid looked likeit was metallic looking. Aug 10, 2011 · You need to have someone replace the pinion shaft seal to stop the leak, and you need to check the gear lube level in the diff. Please check out my sho Jan 19, 2023 · Consider its size, shape, and materials to prevent fluid from leaking. The lower drain plug is magnetic on the front diff. If your vehicle has front-wheel drive, then it uses a front differential that is next to the transmission in a unit called the transaxle. There is a cover on the back side, it usuallly has 10 or12 bolts. Recently, I have noticed that the differential, which is at the center of the rear axle is leaking a lot of oil. Dec 8, 2015 · This part 1 of 2 DIY video shows how to overcome a clogged vent tube on your differential. Following the leak, you might hear a humming noise getting louder with speed. The two times my Diff has sprung a leak, it was evident from all the little black oily spots I'd find spattered all over the rear fascia when I'd go to wash the car. It’s part of the rear differential that’s most commonly damaged and is generally made from cork, rubber, or an oil-resistant silicone sealing the differential housing. Some differential output seals also help to keep the axle shafts aligned properly with the differential. How do you check the fluid? Don't want to start loosening up something unless I'm in the right place. I think this is a reliable way to easily detect the issue. The tech said that this is a machined surface and that he thought there may have been some contaminants on the suface that caused the sealant to blow out. Typically, the main cause of rear differential fluid leakage is damaged seals. Aug 25, 2008 · Just dropped off our '05 Tahoe z71 for a possible leak in the rear differential. I assumed that the CV axle was not all the way in so I took everything apart, made sure it was all the way in and reassembled. In this blog post, we’ll outline the different types of rear differentials and discuss the symptoms of each. Jul 17, 2003 · My car has been at the dealer since Monday the mating surfaces between the transmission and the intermediate housing (between the gearbox and rear diff. 9. rx ig fz hj ej gb wx fy sc fb