chevrolet Workshop Repair Guides

Chevrolet Workshop Service and Repair Manuals

Idle Air Control (IAC) <--> [Idle Speed/Throttle Actuator - Electronic] > < Component Tests and General Diagnostics|Page 3917
Page 3
background image

PCM Reprogramming Failure

^

Check PCM connections

^

Check Decline terminal/equipment for latest software version

^

Repeat reprogramming procedures. If it fails again, replace the PCM. The replacement PCM must be programmed.

PCM Functional Check

^

Refer to System Diagnosis / Diagnostic System Check.

Idle Air Control (IAC) <--> [Idle Speed/Throttle Actuator - Electronic] > < Component Tests and General Diagnostics|Page 3917