2009 GMC Savana 3500 Q&A

2009 GMC Savana 3500 Question: IDLE STAYS AT2500 AND WONT COME DOWN

IDLE STAYS AT 2500 WONT COME DOWN -
Answer 1
there is a problem with the engine control system or a big air leak into the intake system. I'd guess that the check engine light is on. The check engine light indicates that the computer has detected a malfunction in the engine/emission control system and has diagnostic codes and data stored which would be essential in diagnosing the problem. A technician with a scanner could access the diagnostic codes and data and then be able to give you a diagnosis. If you want to find a GM specialist, here's our directory link for you: https://repairpal.com/directory?address=16105&car_brand_names=GMC -