Automatic Transmission Problems of Chevrolet Trailblazer - part 1

See attached document for complaint.

The contacts daughter owns a 2022 Chevrolet Trailblazer. The contact stated that on several occasions when the park (p) gear was selected, the gear selector did not show the vehicle in park (p). The contact stated that the gear shifter was slammed into the park (p) gear until it registered with the vehicle. The vehicle was taken to a dealer where it was diagnosed that the shifter needed to be replaced. The vehicle was not repaired. The manufacturer wan notified of the failure. The failure mileage was 46,000.

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Transmission lines corroded.

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Transmission line between radiator and transmission rusted out. My vehicle is a 2007 Chevrolet Trailblazer with 59,000 miles.

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I have a 2002 Trailblazer that is currently getting it's 3rd transmission installed due to failure. The first one was replaced in 2005 at 48,000 miles. I was told by gm it was replaced with a new one, which I understand has a 100,000 mile warrenty. I am now having another one put in after 80. ,000 miles being put on the new one at a cost of $3000. When I contacted gm regarding this I was told: "at some point the customer has to take responsibility for their own vehicle, gm is not going to assist you with this issue". This will ablsolutely be the last gm product I own.

No problems with my 2003 chevy Trailblazer previously. Went out to start it and it wouldn't go in reverse. Needed new tranmission at a cost of $4,000 dollars. My understanding is that this is a common problem with Trailblazers but it has not been addressed.

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About 10 miles outside of dallas my check engine light came on but no initial problems. Later that night while driving on the interstate the car would not go faster than 30mph. I returned home that night and left it parked. The next day took it to autozone and the guy did an engine check stating that my transmission has gone out and that it was low on fluids. I added 3 quarts of transmission fluid which seemed to help a little bit, but I do not feel comfortable enough making an 8 hr trip back home.

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The contact owns a 2006 Chevrolet Trailblazer. After stopping the vehicle she shifted into park and removed her foot off of the brake pedal; the vehicle surged forward until she reapplied pressure to the brake pedal. Once the vehicle stopped she noticed that the instrument panel displayed that the vehicle was still shifted in drive even though the gear shift lever was in park. In order to turn off the vehicle she had to apply the parking brake. She attempted to restart the vehicle but it would not start. The failure was not diagnosed. The vehicle was not repaired. The failure and current mileages were 34,000.

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2002 Chevrolet Trailblazer with 86,000 miles on it, noticed a large amount of fluid under vehicle while parked in my driveway. Took the vehicle to our mechanic and was advised that two of the four lines that carry the transmission fluid are cracked/corroded.

I own a 2002 Chevrolet Trailblazer ext which has been impeccably maintained by me. Prior to going on a vacation I brought the truck into my mechanic for an inspection as usual and he informed me the transmission fuel lines had to be replaced due to excessive corrosion. He also advised me that this was a common problem with this model which prompted Chevrolet to change the design. He checked to see if it was on a recall list but was not. I checked the NHTSA site and have noticed numerous complaints on this same issue. Why has this not been addressed with gm and placed on a recall list for replacement by a dealership?.

Driving at posted 55 mph our 2002 Chevrolet Trailblazer with 50,000 miles on it started to blow smoke behind it. Before we could pull off the road safely, the engine rpm went crazy and the transmission stopped working. It was later found that the transmission cooler line failed due to corrosion and sprayed oil on the exhaust system resonator. On careful inspection, the trans cooler lines are corroded in many places. The lines are so close to the exhaust system that an insulation material had been placed over the lines and may have contributed to holding moisture and accelerating the rust through. I am waiting for new lines and do not know if the transmission is destroyed.

My 2002 Trailblazer transmission cooler line are so corroded that they started to leak and cause a smoke condition . .

The contact owns a 2002 Chevrolet Trailblazer. While driving at 40 mph, there was an unusual increase in engine rpms to 4,000 and the vehicle decelerated. The vehicle was taken to a local repair facility where the contact was informed that the third gear was burned out. The vehicle was not repaired. The contact believed NHTSA campaign id number: 03v075000 (power train: automatic transmission) was the cause of the failure however, she was unable to confirm if her VIN was included in the recall. The manufacturer was not contacted. The failure mileage was 105,570 and the current mileage was 105,580.

2002 Chevrolet Trailblazer my 4-wheel drive indicator lights up sporadically. It also jerks from 2-wheel to 4-wheel. I am in agreement that this needs to be recalled.

While on the highway to florida from ohio I felt a budge and then heard the vehicle sound like it was down shifting and the rpms were high. I pulled off the side of the highway and headed back home doing 40 mph since the vehicle would not shift past 2nd gear. Also the vehicle shifted gears harshly. Took the vehicle to the dealership and they had informed me that I needed a new transmission. I have read hundreds of other complaints on the this same subject. I am assuming that most people don't know where to report such incidents.

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I have an 02 chevy Trailblazer. I purchased it in 08. The 4 wheel drive is defective. I took it to the dealership 3 months after I bought it to report that the 4 wheel drive indicator light was switching around on its own and causing the truck to put itself in 4wd while I was driving. I was told that it wasn't a problem and the 4wd box needed to be reset but it was nothing that would cause any problems. Today while driving to work I was almost in a wreck because the truck jumped from 2wd to 4wd by itself and my truck started jerking and slowed down (on the highway). After doing some research it seems that a lot of people (especially those with the 02) have this same problem. They need to do a recall and fix the problem before people get hurt. I'm sure I'm not the only person to report this problem. Please help us. If you have time please at least read through the thread on the first link. This is not an isolated incident. . Read more...

The contact owns a 2008 Chevrolet Trailblazer. The contact was exiting the vehicle with the engine off and the vehicle independently began rolling backward. The driver's door knocked her down and she suffered minor injuries. The vehicle continued to roll into the street without incident. The contact did not take the vehicle to the dealer for diagnosis or repairs. The manufacturer was not contacted. The failure and current mileages were 26,000.

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I have a 2005 Chevrolet Trailblazer with 75,000 miles on it. With no warning, my transmission went out. The car is well cared for and regularly serviced. Our local dealership explained that I had no power train warranty, and that they do not repair the transmission. The cost to me for a new transmission would be $2720. 31. Updated 10/27/10.

Went to dealer for vehicle inspection and oil change on my 2005 Chevrolet Trailblazer. Was told that the sensors are indicating that there is moisture getting into my transmission due to a issue with the dip stick not sealing properly. Was told it would cost $192. 00 (parts and labor) to repair. That it is not covered under warranty. However, I was told that if my transmission did go out due to this problem, and my vehicle was still under the warranty, that the warranty would cover a new transmission. Doesn't make sense that if there is a defect in such a minor part as the dip stick seal, why the warranty wouldn't cover the repair.

Driving normally ,put car in park ,put car back in drive crunching noise ,car no longer has reverse or 2nd gear.

Automatic transmission dipstick rusted off at the top. Rusting inside a transmission is a concern for the overall life of the transmission.

Transmission line leak. Passenger side fender well. Corrosion on 1 line.

2002 chevy Trailblazer at 38,000 transmission went out was told it is caused by 3 different shops the sunshield (sun gear) assembly is defective and gm knew about it. Was rebuilt in sept. 2005. 3/1/2010 vehicle now has 82000 transmission went out and was again told same thing. Vehicle makes a loud popping sound then shakes violently and reverse, 2 and 3 go out with out warning. Vehicle revs high then struggles upon acceleration from traffic light.

Last summer, my vehicle started stumbling at speeds greater than 50mph on the highway. I had my vehicle serviced several times, without the issue being resolved. I have had the throttle body replaced, tune-up, map sensor, air intake sensor, fuel system cleaned, fan clutch replaced, still had the stumbling problem. Approximately 2 weeks ago I was driving home on the highway, when I heard the engine rev up very high, but I wasn't going any faster. I then pressed on the gas, the engine raced, but I was just coasting. I was able to coast off the highway to the median, thank god nobody was behind me. I also thank god I didn't have my family with me. The mechanic said, that one of the gears inside, the tranny was broken, and the pump had shattered. I would hate to see this happen to someone, and they can not get out of the way, someone could get killed.

The contact owns a 2002 Chevrolet Trailblazer ext. While the vehicle was parked he attempted to shift gear out of park position and it shifted into a different gear. The vehicle was taken to a local mechanic who advised him that the gear shift needed to be repaired. The vehicle was not repaired. The failure continued to occur. The dealer diagnosed the failure and advised him that the gear shift needed to be repaired. The contact referenced recall NHTSA campaign id number: 03v075000, power train:automatic transmission and was advised by the dealer that the recall repair had already been performed. The failure had been on-going for the last year. The vehicle was not repaired. The failure mileage was 120,000 and the current mileage was 126,000.

The contact owns a 2003 Chevrolet Trailblazer. The contact stated that while driving approximately 40 mph. The vehicle completely stopped. The tachometer began to rise but the vehicle would not move forward or reverse. He took the vehicle to a repair shop and was told that the sun gear failed and the entire transmission needed to be replaced. He called the dealer and was told that they could not offer any assistance. The manufacturer was not notified. The vehicle was being repaired at the time of the complaint. The current and failure mileages were 65,828.

2004 chevy Trailblazer with 80,000 miles, transmission went out while on interstate, could not get speed above 25 miles per hour.

I have a 2004 Chevrolet Trailblazer SUV 4wd with 61000 miles on it and have lost reverse on it. My mechanic took it apart and found some pieces had broke and it will have to be rebuilt or replaced. After reading about other complaints with people having the same problem I would have to say it is the sun gear. I'm very unhappy to hear that gm doesn't admit to having a problem with this transmission,but it is obvious to me that there is a problem that needs to be addressed.

The contact owns a 2002 Chevrolet Trailblazer. While shifting the vehicle into park, the gear selector displayed drive. While taking his foot off of the brake pedal, the vehicle lurched forward. He speculated that the retainer clip, that holds the shifter cable to the gear selector arm on the transmission, had fractured. He was in the process of taking the vehicle to the dealer. The failure mileage was 75,100. Updated 12/01/09 the transmission cable linkage failed. The consumer pulled to a stop, applied the brake and moved the shifter to park. When he removed his foot from the brake, the vehicle lurched forward. He immediately applied the brake again, turned off the engine and set the parking brake. He verified that the shifter was in park. He also observed the transmission indicator on the instrument panel indicators that the vehicle was still in drive. He attempted to move the shifter from the park position, but the safety interlocks would not allow the shifter to be moved, even after depressing the brake pedal. When he looked under the vehicle and checked the linkage he saw the shifter cable was no longer attached to the transmission range selector lever. There was a white nylon bushing at the end of the shifter that holds the cable end on the selector lever. One side of the bushing had broken off. The consumer was able to make a temporary repair by manually moving the transmission range selector lever to the park position and placing the linkage cable end back onto the end of the selector level. Updated 12/01/09.

Transmission oil cooler line is leaking.

Transmission went out on 2003 chevy Trailblazer lt. No warning lights came on to indicate that there was a problem with the vehicle. Have to replace transmission.

The transmission was faulty after only 94,000 miles. The transmission had no prior problems or repairs.

2002 Chevrolet Trailblazer LS transmission cooler lines rusted through causing transmission to burn up 3rd and 4th gears of automatic transmission. It appears that by reading the other two submissions that general motors has a problem and to where they located the cooler lines to cause rust through. I did have some brake work that I believe caused the rusted cooler lines to be jarred enough for the lines to be sped up to the rupture point.

Transmission cooler lines rusted through.

Leaking transmission hoses due to excessive corrosion due to poor design on 2002 chevy Trailblazer ext.