Question about 2011 Chevrolet HHR
Service traction light comes on, runs very rough, reduced engine power, engine light comes on
Did you check for codes & google them,
to see what system has a possible fault
Posted on Mar 03, 2013
po455 is Probable Cause[s]
1. Defective, loose or missing fuel cap
2. EVAP canister broke, hose cracked or not connected
3. Purge or vent solenoid defective
4 . Vacuum leak at engine po121 code po121 means Throttle Position Sensor/Switch A Circuit Range/Performance Problem . it is usually indicative of a faulty throttle position sensor or faulty wiring harness in the engine bay.
Posted on Feb 27, 2010
The torque converter clutch circuit may be at fault. The best way to determine the problem is to have a scanner/computer to read check engine codes.
Posted on May 06, 2009
I had this problem with my 2007 HHR. I drove away with the service engine and the service traction light on. The car was stuttering through the gears. I took it back and they checked it. They disconnect some wires while they change the oil and one was loose. The service engine turned off but the service traction stayed on. We disconnected the battery for 3 minutes and it fixed the problem. Some of those other guys spent up to 300 dollars to fix the problem. Hope it works out for you.
Posted on Oct 01, 2010
Hello and welcome. the engine reduce power waraning is the key to the other problems. this is normally a problem with the electronic throttle system. the engine control module disables the traction control system when it detects a engine problem, in your case a problem with the electronic throttle system. you shouldnt drive with this concern. this is normally covered under the vehicles 100,000 mile warranty. you need to conteact your nearest dealer for help
Posted on Nov 22, 2010
how do you fix the "reduced engine power" light on the dash bard of a 07 Chevy Impala LTZ and "Service Traction Control"?
Posted on Feb 27, 2010
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