Quote:
Originally Posted by Weasel Diesel
o2 sensors will do that garbage. check there good.
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I am going to replace the O2 anyway... I don't have a code for lean or rich, but I have not replaced it since I bought it in 05.
Quote:
Originally Posted by tommie
follow what ever advice that chevy tech gives you.....
hopefully he will see the thread and chime in.... if not, send him a PM
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Thanks, I will definitely listen to him
Quote:
Originally Posted by ChevyTech
Tommie – thank you for your vote of confidence.
jbclassis - Does the scanner show the system ever making it to closed loop operation?
The computer could have failed and the system is running off the back-up in the PROM (MEM-CAL)
As a test you could unplug the TPS and see if the computer is able to set a trouble code when there is a problem.
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ChevyTech, The scanner I have is fairly generic. It recognizes the system as a GM OBD 1, asks for year, 8th digit, truck or car, and trans. Then it gives "memory retrieval successful..." Then "There are no stored codes in the computer"
I unplugged the Computer controlled advance wire and it set the SES light, I unplugged the EGR solenoid and it set the light... is this what you are looking for, or does it specifically have to be the TPS?