GM Repair Problems? Ask GM Repair Expert Now.
Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.
This issue here can be due to a fault with intake air flow restricted or the engine computer in some cases with all that has been done here already.The diagnostic testing needs to be done below to see if the fault can be pinpointed.I know there were issues with the engine harness running along the top of the engine on some models and the harness rubbed into the hood and had to be repaired and shims installed to lift the body slightly in the front to keep this from occuring again.You might check into this as well here.Below is the complete diagnostic testing procedure if no wiring issues are found.
Here are the wiring diagrams for this sensor
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