2015 Chevrolet Impala

While driving this vehicle, the Traction Control will turn off along with the Stabiltrack function. The transmission will drop into "limp" mode and function on a "basic" level. This causes the vehicle to loose power and become very sluggish to control or operate. A code for "loss of TCM communication" to be found in the computer via the ADL. To remove the code and restore communication to the Transmission Control Module, I have to remove and reinsert the wire coupling connection wire harness at the TCM. The TCM will now communicate with the ECM. This is a recurring problem solved by this action.

The manufacturer patented Stabilitrak system continues to fail on my vehicle. Initial ODI 114406439. Dealership charged $1,7832.15 to replace transmission control module (TMC) on 11/5/21. On 12/22/21 vehicle indicated the exact issue (Service Stabilitrak), took vehicle to same dealership, awaiting response. The car is not drivable when "Service Stabilitrak" is indicated as engine power is substantially reduced. GM technical service bulletin PIC5992A seems to apply to my issue. However, Chevrolet and the dealership says it does not apply, but continue to charge for engine light analysis and unnecessary, expensive repairs. Your assistance would be greatly appreciated. Vehicle is once again inoperable (3/4/22) due to this issue (service stabilitrak). Consumer stated almost $3,000 was spent with no resolution. Consumer stated vehicle fixed with used parts from a junk yard— new parts were not available.

WHEN I PUT MY CAR IN PARK IT ROLLS BACK LIKE IT'S A MANUAL IT DOES IT ALSO WHEN I AM IN REVERSE AND GO TO DRIVE. ALSO WHILE DRIVING MY GEAR SHIFT IF SOMEONE TOUCHES IT OR HITS IT WILL GO FROM DRIVE TO NEUTRAL WORRIED IT WILL GO TO PARK OR SOMETHING DANGEROUS ABOUT TWO YEARS THE VEHICLE ITS DONE THIS THE DEALERSHIP SAID NORMAL AND IT IS NOT.

CRUSE CONTROL DEACTIVATES AND WON'T REACTIVATE WHILE CRUISING AT HIGHWAY SPEEDS. SEEMS TO WORK AGAIN AFTER SHUTTING OFF AND RESTARTING. THIS HAS HAPPENED SEVERAL TIMES. LAST TIME IT HAPPENED THE ENGINE ALSO DIED. COASTED TO THE SIDE OF ROAD, WAITED A MINUTE AND CAR RESTARTED AND SEEMED FINE, BUT HAPPENED A SECOND TIME A FEW MINUTES LATER. I WAS ON A STATE HIGHWAY WITH LIGHT TRAFFIC SO WAS IN NO IMMEDIATE DANGER, BUT WOULD HATE FOR THIS TO HAPPEN ON A BUSY SIX LANE INTERSTATE. NO DIAGNOSTIC CODES WERE SET BY THE COMPUTER SYSTEM.

A FEW DAYS AGO, I WAS DRIVING ALONG THE HIGHWAY AT APPROX 55MPH AND DECIDED TO CHANGE LANES AND I NEARLY RAN INTO A VEHICLE THAT WAS PASSING ME AT THE TIME. THIS NEAR MISS OCCURRED BECAUSE MY VEHICLE BLIND SIDE DETECTION SYSTEM WAS INOPERABLE. MY MECHANIC TOLD ME THAT THE SYSTEM SENSORS AND WIRE HARNESSES NEEDED TO BE REPLACED AND THAT THIS WAS A DESIGN DEFECT IN GM'S SIDE DETECTION SYSTEM IN THAT IT WASN'T ADEQUATELY PROTECTED FROM NORMAL MOISTURE DAMAGE. SINCE THIS IS SUCH AN INHERENT AND SERIOUS SAFETY HAZARD, THE MANUFACTURER SHOULD BE HELD RESPONSIBLE AND FORCED TO ISSUE A RECALL TO REPAIR THIS DEFECT. THANK YOU FOR YOUR ATTENTION TO THIS MATTER, [XXX] VEHICLE OWNER INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR