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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for January 11, 2023
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
1996 Chevrolet Tahoe 5.7L No spark VIN: 3GNEK18R2T
This is one of GM's simplest systems, yet it is mopping the floor with me! This is one of my best friend's vehicles - not a "customer" so to speak. The P0337 might have been set during testing. Should've paid more attention, but I can't remember now when... Trouble codes: P0337 (CKP low duty cycle may have been from testing)
1999 GMC Sierra 2500 SL 6.0L Heater Actuator VIN: 1GTGK29U7X
I am leaning on replacing the HVAC Control Module, hoping I can get some good input. First of all I do not have a Tech 2 I got a OTC Envcore and it does not have data for the heater controls. The controller will not go to defrost & down to the heater vents...

Fixes & Summaries for GM
Fix/Summary Answers
2015 Chevrolet Trax LTZ 1.4L MIL Lamp on, low boost VIN: KL7CJNSB2F
this one is fixed, what i found was it had intermittent loss of boost, i learned how to drive it avoid the problem, i put a vacuum gauge on the hose to the turbo dump valve, i found intermittently it had funny drop in vacuum, so i pulled the turbo to check th... Trouble codes: P0299.
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