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Professional Automotive Repair Technical Discussions for September 10, 2023 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers |
Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2004 Chevrolet Silverado 1500 5.3L Misfire VIN: 1GCEC14T14 We've all been there. I will explain. Thank you Tad [...] for suggesting secondary ignition scope. We had relied on input from out tech that coil cyl6 had been switched out and misfire did not follow. Though it did need the valve job and improved the performa... Trouble codes: P0300 (Random misfire), P0420 (B1 catalyst efficiency), P0156 (B2s2 oxygen sensor circuit malfunction). |
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