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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for September 21, 2020
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Open Help Requests for GM
Help Request Answers
2001 Chevrolet Tahoe 5.3L HVAC Mode door VIN: 1GNEK13T61
Vehicle received in early July of this year with inoperative mode door function. We replaced with AC Delco part and worked fine until Sept. 10th. Several days later the actuator failed again. What could be causing these failures? The door moves freely with...

Fixes & Summaries for GM
Fix/Summary Answers
2006 Chevrolet Silverado 1500 WT 5.3L Transfer Case VIN: 1GCEK19B56
Programming the Transfer Case ECU restores the 4WD operation. It is important to note that NOT all module produces 5 volt before programming.
1995 GMC K2500 Sierra SL 5.7L Poor Idle Quality, Stall VIN: 2GTFK29K1S
Thanks for all your messages guys! I went back and checked all the grounds. Joseph in Mississippi was on to one, the ground at the inner fender had aftermarket wires shoved under it and not making good contact. Fixed that but it still was acting up. Ended u...
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