2003 GMC SIERRA
250,000 MILES
Avatar
ANONYMOUS
  • MEMBER
  • 1 POST
on cold start truck RPM is good but then drops to the point thst it stalls worst in cold weather
Dec 10, 2012 at 2:42 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
  • 52,796 POSTS
it sounds like the idle control motor is not working. have it tested to confirm.

Roy
Dec 10, 2012 at 3:05 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
Check for vacuum leaks and check the idle air control solenoid (IAC)
Dec 10, 2012 at 3:05 AM