reduce engine light

Asked by Mar 09, 2017 at 08:17 AM about the 2005 Chevrolet TrailBlazer LT 4WD

Question type: Maintenance & Repair

Was driving about 70 MPH and the reduce power
light came on and it wouldn't go I turned it off and
back on and it went off but I got back up to 70MPH
and it happened again

1 Answer

73,705

Have the vehicle scanned for trouble codes, you probably have anything from a p1516 to p1519 trouble code. P1516 CHEVROLET - Throttle Actuator Control Module Throttle Actuator Position Performance...Possible causes; Faulty Throttle Actuator Control (TAC) module, Throttle Actuator Control (TAC) module harness is open or shorted, Throttle Actuator Control (TAC) module circuit poor electrical connection, Check Throttle Actuator Control (TAC) module connector for water, Binding or bent throttle plate-failed throttle body.....Here is a video on the fix for this... https://youtu.be/U2DjMcM_Quk

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