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Professional Automotive Repair Technical Discussions for May 19, 2021 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 | |
| 2002 Chevrolet Silverado 2500 HD 6.6L Fuel System VIN: 1GCHK23152 This truck was towed in crank no start. Checked fuel rail pressure was building to desired at 42mpa. I checked cam and crank signals both present and in time. Crank signal is present at the ficm. Checked all the powers and grounds at the ficm at this time ... |
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| 2003 Chevrolet Silverado 3500 LS 6.0L MIL Lamp on VIN: 1GBJK34U93 Got this truck in for fuel gauge always reading empty. Had code P1172. Erased code and fuel gauge worked. Replaced vent valve per tsb and in couple days was back with same code. Warrantied out rear pump as customer had previously replaced and it emptied th... Trouble codes: P1172 (fuel transfer pump insufficient flow) |
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| 2011 GMC Yukon XL 1500 Denali 6.2L MIL Lamp on VIN: 1GKS2MEF3B On scanner, compare crank active counter to cam active counter. Idle in park, crank active counter is erratic. Whereas, cam active counter consistently counts up to 250 at idle in park. However, in drive under light load in the shop, the crank active count... Trouble codes: P0336 (CKP sensor performance), P0449 (Evap vent solenoid control circuit) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1958 Chevrolet 3100 3A 4.6L steering control So added another 2deg of caster and it drives great. Well at least for a 1958. Customer is happy so that's what matters. Told him for the this setup its going to be as good as it gets but with that extra caster it does drive pretty well now. Thanks for everyon... |
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| 2006 Chevrolet Cobalt LS 2.2L No Communication VIN: 1G1AK15F76 Wiring issues with DLC & grounds- Also- kept getting the incorrect Trans module service #'s -= which would disable all other modules and not allowing Flash reprogramming All wiring and plugs were good to TCM other than slight amount of trans fluid running in... Trouble codes: U0101. |
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