ON COLD START TRUCK RPM IS GOOD BUT THEN DROPS ...

2003 GMC Sierra

Tiny

Anonymous

December, 10, 2012 AT 2:42 AM

On cold start truck RPM is good but then drops to the point thst it stalls worst in cold weather

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2 Answers

Tiny

ASEMaster6371

December, 10, 2012 AT 3:05 AM

It sounds like the idle control motor is not working. Have it tested to confirm.

Roy

Tiny

Jacobandnickolas

December, 10, 2012 AT 3:05 AM

Check for vacuum leaks and check the idle air control solenoid (IAC)

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