Nine problems related to transmission failure have been reported for the 2003 Chevrolet Trailblazer. The most recently reported issues are listed below.
Transmission failed in reverse - required new transmission @ 150,840 miles.
2003 Trailblazer transmission failure. Driving in the neighborhood (25 mph) heard a load clunk ( like something either hit or fell of the vehicle), then a high pitched whining sound, got the vehicle home (11pm). In the morning, to take the vehicle to be looked at found that I had no reverse, had to push it out of the garage. I have a extended warranty, but have given firestone permission to replace with a rebuild unit from gm. I do not know what my warranty will cover, but believe that gm should foot the bill, since this had been a reported problem for this transmission for years.
Transmission failure at 68,000 miles on two wheel drive vehicle. Stranded wife and kids on interstate in michigan. Thank you to the michigan state police for helping! very dissatisfied with the whole gm brand. Second SUV owned and similar problems with both. This will be the last. . . .
2003 chevy Trailblazer transmission failure at 52000 miles.
Traveling up a draw bridge at 50 miles per hour the transmission quit completely, the engine would rev up but no drive from the transmission. Fortunately, no one rear ended the vehicle as we slowed down and barely made it over the top of the bridge and then coasted down enough to get off of the bridge. The vehicle was towed to a dealer and they determined that the transmission must be completely replaced at my cost. The vehicle has 64,000 miles, too few for a transmission failure.
While driving across the williamsburg bridge I suddenly lost the ability to accelerate. The rpm gauge shot to the high end and I had to coast the vehicle off of the bridge. I was towed to the dealership who without looking at it, knew immediately that the transmission had failed. I asked the service technician was this a common problem and he pointed me to edmunds. Com to show how many posts there were concerning this problem. The dealership "overhauled" the transmission and told me I should consider a transmission cooler. I've never towed anything with the vehicle and am concerned that I am about to experience the same problem, except this time my warranty is expired.
Transmission just failed on our 03 tblazer because of the sun shell spline. Tires had to be replaced at only 45,000 miles (normal driving conditions).
The incident occurred while driving home after dropping my son off at work on I-95. I was traveling between 65 and 70 mph and passing a semi when my vehicle suddenly and with no prior warning shifted into second gear. Luckily I was able to maintain control of my car and able to drive it the rest of the way home. On Monday I drove my vehicle as instructed to the mj sullivans, the dealership in which I bought the Trailblazer, for service. I was then notified that the stator support bushings in the transmission failed and that it would actually be cheaper to replace the transmission. Interestingly, the new transmission comes with a 10yr/100k mile warranty and my vehicle has only 69000 miles of highway miles. Asked the service engineer about how unusual this type of failure is and they told me highly considering the wear on other parts in the transmission. We do not tow or have hills in our area and for the most part only travel on the highway so I would not suspect that we would be putting a high level of wear and tear on it. We had the transmission replaced.
2003 Chevrolet Trailblazer transmission failure (at 75,000 miles) on highway $2000 repair required - full transmission overhaul.