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Professional Automotive Repair Technical Discussions for March 25, 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 | |
| 2021 Buick Encore Preferred 1.4L MIL Lamp on VIN: LRBFZPR47M First off IATN won't let me put in the correct vehicle information with the VIN. The car is a 2021 Buick Envision with a 2.0L Turbo Engine. The car came in this winter with a CEL on and DTC P04FB present. We found bulletin #PIP6093 applied to the concer... Trouble codes: P04FB |
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| 2003 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54YX3 I scope the map sensor and egr signal. It perfect. I wiggle the wires and no changes occur. I test egr system and engine run rough or died when activate egr valve. Test drive vehicle and same code p0401 occur. Next code p0741 ( torque converter ) , would a... Trouble codes: P0401 (Egr), P0741 (Trans. Torque converter) |
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| 2004 Chevrolet Silverado 2500 LS 6.0L No Start VIN: 1GCGC23U24 Hello we have a truck with an extended cranking no start sometimes maybe once every 20-25 starts it will crank and backfire in exhaust if you stop and cycle key it starts right up, fuel pressure is 60psi we have spark and injector pulse when this occurs we... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2009 Chevrolet Tahoe LT 5.3L ecu VIN: 1GNFC23059 thank you all for the help, it needed reprogramming and it cleared the codes. I had to update my Autel J2534 to the newer one as my M s908 was no longer supported, so had to order it and that took time, but it is now repaired David [...] |
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