Having problems with your 2003 GMC Yukon Denali ?

I have powerdowns in my 2003 Yukon Denali at various times.

\015 I thought these powerdowns were through affter I did a tune up with plugs,wires, and injector cleaning. Various codes come up on the OBD tool that Auto zone prints out. Can it just be a software update to the master computer like one service advisor at a GMC dealer has advised me.?\015 Posted / edited by AnonymousUser on : 25-10-2021

Answers :

THE PROBLEM IS IN THE THROTTLE BODY UNIT OR WIRING HARNESS PLUG
Repair Help & Product Troubleshooting for 2003 GMC Yukon Denali

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