Bulletins
| Bulletin | Bulletin date | Replacement Bulletin | Item no. | Summary | Added |
|---|---|---|---|---|---|
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||||
| PIP-3366-B | 11/01/2011 | 10043185 | Cadillac/chevrolet/gmc/hummer: some suvs and trucks are exhibiting a condition where by grinding/ratcheting type noise coming from automatic transmission when shifting into park while in 4wd low (4lo) range. *pe | 02/29/2012 | |
Consumer Complaints
| Fail date | miles | occurences | Purchase date |
|---|---|---|---|
| POWER TRAIN | |||
| 02/01/2013 | 61117 | 1 | |
| I had gone to a friends house and on the way home my power steering malfunctioned. i took the vehicle to a local auto repair shop and was told the power steering cooler had rusted through. i also had to replace this part on my 2003 trailblazer not realizing there was a problem. if this part rusts out on different years of the same model there seems to be a problem. the vehicle became very hard to steer. i know for a fact that i and many other people have had problems with transmission lines gasoline lines and power steering lines. i had to replace the gasoline line and fuel pump on the 2003 , and just replaced transmission line on the 2007. i think there needs to be an engineering change on these vehicles. i also received a recall notice on the 2007 trailblazer for the electric window switch. the notice said i would be notified when to bring my vehicle in. it has been several months since i received the notice and i am still waiting for notification. it cost me $350.00 to have the power steering repaired.. *tr | |||
| 09/07/2012 | 65000 | 1 | |
| Fluid leak from transmission oil cooler lines due to corrosion. *tr | |||
| 06/04/2011 | 58324 | ||
| Transmission failure without any notice at intersection almost causing accident in a 2007 chevy trailblazer ss | |||
| 04/21/2010 | 94000 | ||
| 2007 chevrolet trailblazer | |||
| 03/03/2007 | 63500 | 1 | |
| My 2007 trailblazer lost power during acceleration. on january 22 i took it to the dealer and it took them 4 days for the vehicle to act up so they could get a code. they replaced the powertrain control module. on march 3, 2010 it happened again, the same exact problem, while my wife was crossing a street. the rpms went from 2000 or so down to 5-600 while pushing the gas pedal. i had the truck towed in to dealer and got a loaner car under terms of my warranty. it is now day 6 and they cannot get it to act up again. i called gm customer service hotline and got a case # 71-810026931, but i am being told before they send a technician that can solve the problem i must take it to a second dealership at my cost as well as paying for towing and loner car for the first dealership to release the truck. they told me to drive it until it messes up then goto the dealer to get code. the safety issue is what happens to my family if it acts up in the middle of a turn with traffic coming. there is obviously a problem that the computer isn't recognizing. and because of that my family has to be the guinea pigs before gm will send a technician to solve the problem. my local mechanic seen the problem, the dealership seen the problem and thought they fixed it. what they did was put a bandaid on a cut that requires stitches. i have to put my family in jeopardy and that of whoever hits me so gm can save money and not send the technician. the same problem in just over a month, from losing power to the dealership having problems diagnosing it should send up a red flag that something is wrong and lives are in danger. but that does not seem to be the concern except from me. so i have to pay for a truck that im afraid to drive so gm doesn't lose money sending out a technician when they should be worried about a problem with a truck that could cost someone their life. *tr | |||
| 05/14/2008 | 3580 | 1 | |
| I have a problem where the throttle hangs up around 2000 rpm in all gears after being on the throttle and then immediately needing to slow down for any reason. this is a trailblazer super sport equipped with the 395 hp 400 ft lb engine. i have been to the dealer. i have sued gm for this being a lemon and was paid off. yet no fix. i have video of this happening. other owners have the same problem and gm says because others do it the vehicle is acting as designed. per george valez gm legal office . gm service request # 71-661522934 high idle i have logs where the acceleration takes place from 9 mph to 11 mph for 11 seconds of a tbss wild ride with no throttle. i start by downshifting it in manual 1st while slowing down. (brakes required to slow from 2k hang up rpm on down.) when the engine is slowing down there is a bump at ~2000 rpm where the engine speed raises above the input shaft speed of the transmission. prior to this it was turning slower and compression braking. time here is 0 of the 11 seconds. i hit the brakes at 14 mph to pull the speed down from 2k rpm and let off at 9mph 3 seconds later. starting at 1381 rpm for the lowest engine rpm, trans input shaft 50 rpm slower then the engine indicating acceleration. ac clutch just happens to kick in here. here we go! i say. the next 8 seconds we have the engine hits 1650 rpm and hunts around this rpm +- 75 rpm while we hit 11 mph. at 8.4 seconds the engine cuts back to 1468 rpm. this is when the trans input speed is faster than the engine rpm by around 50 - 70 rpm, this indicates engine finally slowing the vehicle again. it only takes 5 seconds from this point to slow down from 11 mph to 5mph without any brakes. that is what is scary - 16 seconds of fighting the engine when it could have stayed cut out and slowed down in less than 5 seconds from 2k rpm. the ac in this example makes the problem worse, but isn't 100% of the problem. *tr updated ivoq/ 09/10/09 | |||
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||
| 04/08/2011 | 59000 | ||
| Transmission line between radiator and transmission rusted out. my vehicle is a 2007 chevrolet trailblazer with 59,000 miles. | |||
| 12/07/2010 | 11000 | ||
| I purchased a brand new chevrolet trailblazer at the end of 2007. since then, i have had multiple service issues with the car, most notably a faulty front axle that had to be replaced. in january 2009, my service 4wd light came on and i could not put my car into 4wd. i immedately took my car to the dealership, who could not find a problem and returned my car to me. a week later, i was driving my car in the snow in 4wd, getting ready to enter the highway, when the car stalled and the service 4wd light came on again. i returned to the dealership, who kept my car for 3 days and again could not find the problem. they returned my car to me and said you probably got snow in your muffler. i drove my car in 4wd periodically for the next 19 months trusting that my car was safe. when the same probelm happened again at the end of nov 2010, i took my car to a different dealership who told me i had a bad front axle and 5 bad gears that were binding, and that i could not drive my car in 4wd until this was repaired. i have also had to have an o2 sensor replaced, several body system repairs, and yesterday my service stabilitrack light came on and stayed on until i restarted the car. i have asked chevy to buy back my car, as it is clear i have a poorly manufactured and unsafe vehicle, and they have only offered to cover my body systems parts under warranty. i feel unsafe in my car and i don' t know where to turn for help. | |||
| 04/21/2010 | 94000 | ||
| 2007 chevrolet trailblazer | |||