Eight problems related to differential unit have been reported for the 2003 Chevrolet Trailblazer. The most recently reported issues are listed below.
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.
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.
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.
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.
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.