Having problems with your 2005 GMC Yukon Denali ?

On my last tank of gas I added a fuel system cleaner, and ran in until the tank was again empty then refilled. Now a 1/2 tank later (on "clean gas/no additive) my check engine light is flashing and I'm running rough when I accelerate. 2006 yokonxl 1500. Any help is appeciated. Thanks

Posted / edited by AnonymousUser on : 20-05-2019

Answers :

You may have messed up the oxygen sensors, stop by autozone and they will check the check engine error code for free. On some models a flashing check engine is associated with emission system problems and need to be checked soon.
Repair Help & Product Troubleshooting for 2005 GMC Yukon Denali

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