Five problems related to vehicle speed control have been reported for the 2007 Chevrolet Trailblazer. The most recently reported issues are listed below.
Speedometer and rms needles do not function.
Fuel gague started fluctuating between full and empty, now it just stays on empty. 09-09-2011 with car in park the idle sometimes goes up to 2100 rpms then will go as low as 600 rpms, recently as of 09-16-2011 I have been noticing a fluctuation in speed on its own or without my assistance.
The contact owns a 2007 Chevrolet Trailblazer. The contact stated that the driver was traveling at an unknown speed when the vehicle abnormally accelerated and crashed into a concrete wall. There were four occupants in the vehicle, all of which were killed. A police report was filed. The black box was investigated and the investigating officer determined that vehicle accelerated but the driver did not apply the brakes during the failure. The contact stated that there were black tire marks at the scene of the crash, indicating that the brakes were depressed. The contact discovered numerous complaints online regarding the same acceleration failure for the year, make and model vehicle. The contact stated that he did not believe that the driver would have driven and crashed into a concrete wall without there being a vehicle malfunction. The failure mileage was 65,000.
2wd 2007 Trailblazer super sport goes wide open throttle after start up and selecting reverse. This is with foot on brake to shift and no throttle applied or touched since start up. Vehicle was in a parking lot. Engine went full throttle and smoked rear wheels just after selecting reverse. This dragged the front wheels backwards a short distance with the front brakes locked up. Shifting to neutral had the engine go over the 6500 rpm redline ignoring all pcm programmed rev limiters. (rev limiters: 4000 rpm in neutral and 6500 rpm in gear. ) dealer found dtc u1017 loss of serial communications for class 2 devices. I know of 4 other 2007 Trailblazer super sport that have randomly gone wide open throttle. This is an additional problem since complaint number : 10269455 throttle hang up - not always returning to idle power.
When I have the truck moving it doesn't matter what speed the throttle body stays open making it very hard to come to a stop. Feels like the engine is fighting me to stop.
| Vehicle Speed Control problems | |
| Fail To Accelerate problems | |
| Car Accelerates On Its Own problems | |
| Cruise Control problems |