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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for May 31, 2019
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Open Help Requests for GM
Help Request Answers
2012 Chevrolet Sonic LT 1.8L Hesitation, Surge, MIL Lamp on VIN: 1G1JD5SH3C
This is my personal car, the vehicles I usually work on are fire trucks and I can't remember the last tech help request I made so please be kind. The car will exhibit a hesitation when accelerating gently and set a P0328 intermittently only when it is wet ... Trouble codes: P0328 (Knock Sensor 1 Circuit High Bank 1)
2003 GMC Sierra 2500 HD SLE 6.6L A/C Compressor VIN: 1GTHK23143
When we received the pickup we checked proper charge on the A/C system. Checked and compressor clutch doesn't come on. you can jump the relay and it works. Also you can command it with the computer. Checked continuity in all wires - tested good. Jumped low...
2004 GMC T7500 T7F042 7.8L limp mode VIN: 1GDL7F1344
this unit developed this issue recently. It is equipped with a 6cyl 7.8l Isuzu turbo diesel. It intermittently goes into limp mode with a light illuminated on the instrument cluster for reduced power, no check engine light is illuminated. Sets a code p1087... Trouble codes: P1087

Fixes & Summaries for GM
Fix/Summary Answers
2013 Chevrolet Spark LT 1.2L compressor VIN: KL8CD6S99D
Replies suggested checking 5v reference at bcm. It was there but it wasn't getting to the temp sensor because a low pressure switch had already been installed and it was bad. The 5v reference couldn't get to the temp senor because the bad low pressure switch i...
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