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Professional Automotive Repair Technical Discussions for June 21, 2025 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2008 Chevrolet C5500 Kodiak C5E042 6.6L No Start, Poor Idle Quality, Hesitation, Surge, Misfire, MIL Lamp on VIN: 1GBE5E1978 intermittent P0090 on this wreckeer. I believe either the regulator's driver in the ECM (Bosch 154 pin 0 986 288 002) or the pump's regulator itself is overheating after several minutes of vehicle operation. it can idle for a while fine, but within 5 mintu... Trouble codes: P0090 (fuel pressure regulator control circuit fault) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2006 Hummer H3 3.5L Power control module VIN: 5GTDN136X6 Performed all test in the above comments, replaced PCM, still had the same issue, jumped both ign 1 on the c1 @ pcm to b+ and PCM shows, removed fuse box and tested wiring from the fuse box to the ign wires to PCM, performed overlay on 1 wire as it had no cont... |
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