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Professional Automotive Repair Technical Discussions for May 21, 2026 International Automotive Technicians' Network (iATN) - Members Only |
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| (Also Available: All, Asian, Chrysler, European, Ford, GM.) | ||
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Open Help Requests for GM
| Help Request | Answers | |
| 1998 Chevrolet Corvette 5.7L No Start, Broken gears in T/B What a mess! I'm retired but am helping a guy out with an LS1+ 6 speed swap into an old car. on first start attempt, it immediately set the three codes and will not fire. I believe PCM is preventing start because it can not control throttle. I used my DSO ... Trouble codes: P1120 (TP sensor 1 circuit), P1220 (TP sensor 2 circuit), P1516 (Commanded vs actual TP Performance) |
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Fixes & Summaries for GM
| Fix/Summary | Answers |
