I buy around 100 chevy trucks a year so I am very familiar with this issue.
99% of the time the reduced engine power is due to the gas pedal. I always replace that first.
Second is wiring going to the TB itself. Dorman makes a kit with a new harness and TB motor. I have never seen the motor fail but I have found two bad harness connections.
The third is the TAC Module on the firewall driver side. I have only seen a TACs Module fail once.
Replace the gas pedal and im sure all will be fine.
Reduced Engine Power Message
Posted 05 September 2016 - 05:10 PM
Posted 05 September 2016 - 05:11 PM
Posted 06 September 2016 - 11:01 PM
Replace the entire gas pedal. Its around $60 brand new wholesale from GM. Not sure what list is on it.
GMT-800 Parts and Factory Module programming specialist
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