Differential Unit Problems of Chevrolet Trailblazer

I have replaced the front differential twice in 10 months. I bought new parts for it not used that were redone to get rid of the problems it had now it has gone again. This time I haven't even used the four wheel drive yet since the last repair. I have research it and I noticed a lot of people with the same problem.

See all problems of the 2003 Chevrolet Trailblazer 🔎.

The front drive axle that goes through the oil pan housing became off balanced, and the vibrations caused sequential breakdowns through all of the connecting parts during normal use, such as the oil pan axle seals, front differential seals, front differential internal gears, cv joints, wheel seals, and the corresponding front axle systems. When the wheel seal vibrated loose, the gear lube sprayed over the engine block, and caught on fire. The vehicle was towed to the shop. The mechanic predicts that the offending off-balanced axle may lock up while driving if not replaced. Note: the date listed is the date of the fire in the engine compartment, but there are many ongoing issues with all of the parts listed, especially the internal disintegration of the front differential.

See all problems of the 2006 Chevrolet Trailblazer 🔎.

While driving on highway, stopped at a light, I went to accelerate and truck lurched forward, made a loud bang and would not engage. The engine whines when accelerator is pressed, but no movement. Also, vehicle would roll back without the emergency brake on. There were zero warnings prior to complete failure of truck. Contacted gm and chevy, and was offered no help, until out of pocket diagnostics are completed at a gm/chevy dealer (and at this point since vehicle is out of warranty, owner was told that help from gm is not guaranteed). Truck is at a private shop, preliminary findings are that the front differential is damaged. The power output shaft and spline is stripped, the cause is vehicle (drivetrain) design does not allow engine oil to get to these components. The parts become dry and brittle, which is why the gears are stripped and failure occurred. This is not an owner maintenance issue, but a complete design flaw. These components should be encased and be getting lubricated from the engine oil. Further findings will be reported.

See all problems of the 2008 Chevrolet Trailblazer 🔎.

I purchased a 2003 Trailblazer from an individual. The front differential had a hole in it. So I purchased a differential from a scrap yard. 90 day warranty. Still had a noise . I still had a noise front differential was out again. I purchased the third differential from a different yard took it apart . Found the driver side bearing bad. It seems to be a very common problem because the driver side drivers constant. I was wondering if there is a recall. I see a lot of complaints online. Thank you there was a fire the differential grease burnt bearing went out and chard motor and surrounding area no real damage.

Upon turning the four-wheel drive engaged unknown to me at the time because the selector switch did not indicate this. The truck became difficult if not impossible to turn at low speeds as this vehicle does not have a limited slip differential in the four wheel drive mode. While turning the tires on the outside of the turn make a larger radius than do the inner tires. Without any slip the vehicle tries to maintain the same linear footage travel by each tire. This causes the tires to bind lock up and skid during turns. I have researched this problem on internet forums and it seems to be a quite common occurrence and could cause crashes while turning. I have contacted the manufacture and the response was for me to take it to a dealer and pay for them to look at it. I declined their suggestion and offered the compromise of taking it to an independent mechanic at my own cost,to which they declined. Please note I did not ask them to repair the vehicle at their cost but only wanted them to examine the vehicle for defective design/material.

I have a 2003 chevy Trailblazer lt. A few weeks ago I found out my 4x4 was not working properly. After only driving my blazer 3 times, at highway speed (70), I heard a very loud knock in the front end shortly followed by continuous knocking and very quickly lost control of the brakes. Due to circumstances being on my side I was able to get off of the highway and place the car in park and have it towed to the garage. Upon review of the front end it was determined the front end differential literally blew apart. My Trailblazer only has 84,000 miles and I now have to replace the whole front axle. Most likely at a cost of at least $2,000. 00. This repair includes the cost of an axle from a salvage yard. . . Not a new one and entails at least 16 hours of labor. With review of articles posted to auto sites on the internet, this is a very wide spread issue with Trailblazers. Why is gm not stepping up to the plate and addressing these issues? I was lucky this morning. My mechanic does not know how I was not in a serious wreck seeing that this happened during morning rush hour.

The contact owns a 2003 Chevrolet Trailblazer. The contact stated while driving at speeds of 50 mph, there was an unusual grinding coming from the front end of the vehicle. The vehicle was towed to the dealer where the front differential was replaced. The failure recurred within five months after repairs. The dealer advised the failure was due to the tires. The dealer would not make repairs under the vehicle warranty, stating the contact voided the warranty by installing used tires on the vehicle. The manufacturer was in agreement with the dealer. The failure mileage was 92,000 and the current mileage was 100,000.

Heard a popping sound near the center front of the SUV. Thereafter noticed some grinding going on when the SUV was accelerating. Took it a dealer to have look at the brakes. Turned out to be the front axle assembly broke and got metal filings in the differential causing the transmission to slip. Repair cost thirty-three hundred dollars. Replaced the differential and front axle assembly.

Front differential.

See all problems of the 2002 Chevrolet Trailblazer 🔎.

Noise from rear axle drive shaft clank at times when shifting 1st to 2nd autotransmisson and light traffic when stop and go under acceleration dealer replace rear axle gears only not the whole complete rear transaxle and then installed rubber spring mounts rear noise is worse now load whine in over drive from 42-to- 62 mph.

The contact owns a 2004 Chevrolet Trailblazer. While driving 25 mph, the contact heard a rubbing noise coming from the front passenger side of the vehicle. She then noticed a burning odor coming from the engine. The vehicle was taken to a local repair shop and they determined that the oil cap for the four-wheel drive failed. The cap was replaced at the cost of $5 and the contact was advised to never place the vehicle into four-wheel drive. One year later, while driving at an unknown speed, the contact heard a humming noise coming from the front of the vehicle. She was able to safely drive the vehicle to her destination. The vehicle was taken to a local repair shop and the technician determined that the front differential failed. The repair would cost $2,000. The vehicle has not yet been repaired. The contact called the manufacturer and was informed that because the vehicle did not receive regular maintenance from a dealer, no compensation would be provided towards the repair. The VIN was unavailable. The failure mileage was 64,000 and current mileage was 81,000.

See all problems of the 2004 Chevrolet Trailblazer 🔎.

2002 Trailblazer was running bad around 34000 miles. Took it to dealership and they had to fix the rear differential and reprogram the 4 wheel drive transfer case. All repairs were under warranty. I am now having the same problems at 70000 miles. Dealership wants to charge about $2000 to fix the problems. Have talked to several other trail blazer owners and mechanics and it seems that gm has a lot of problems like this, but won't do anything about it.

2003 Chevrolet Trailblazer. Front differential gasket according to gm certified mechanic has an expected life expectancy of less than 45,000 miles. Gasket starts to leak and can ruin front differential. Normal for this to happen.

The rear tires on the consumer's 2004 Chevrolet Trailblazer wear out every couple thousand miles while the front tires show no visible signs of wear. It was discovered that the vehicle had a bent differential.

While driving consumer found that there was a hole in the rear axle differential and as a result the vehicle could not be driven. This vehicle had one problem after another. However, on November 25, 2004 while consumer was driving heard a very loud noise. Took the vehicle to dealer, and was told that this time it was the transmission transfer case module.

1st problem (exact date unknown, winter 2003-2004): the "check 4wd" light came on. The dealership's service dept said gm had no repair for this problem and that it was common in Trailblazers, and they simply reset the fuse. Then (may 2004): vehicle started making a growling noise. We took it in and the mechanics said that one of the bearings was bad, and they replaced the bearing and rebuilt the transfer case. A month later (June) we had the same problem. That time, all of the bearings and the oil pump were "scored. " nobody suggested a reason for this. The transfer case was rebuilt again. Now (6 weeks later) the front differential is leaking oil from at least two locations and is currently being rebuilt. I have been told by the service dept that the reason is likely that "either it was put together wrong at the factory or the seal was bad to start with. " it seems to us that the entire 4wd capability of this vehicle is compromised. We live in the country where the roads don't get plowed with any regularity, and with winter coming, I am going to need the 4wd, but I'm afraid to use it. I already spun out once last winter because they told me not to drive the car in a4wd because it's bad for the car, so I was driving in 2wd when I unexpectedly lost traction and did a 360 and almost wound up in the ditch. Even without snow, I am not confident that this car will get me "from here to there" without a problem.

Lisa was taking kids to school when she noticed problems when stopping got to moms house and called shop. On way to shop front differential came apart and took steering and axle with it.