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Professional Automotive Repair Technical Discussions for January 22, 2025 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 | |
| 2013 Buick Verano 2.4L MIL Lamp on VIN: 1G4PS5SK7D This is a friends car. Came in with above trouble codes. I fixed the P013 by diagnosing and replacing the solenoid. Tested O2 circuit. Led me to bad O2 sensor shorted to power. Replaced to O2 sensor and that brought the voltage down below 1. Running around... Trouble codes: P0013 (Exhaust cam solenoid), P0138 (HOS circuit high B1S2), P013A, P0420 (Catalyst low efficiency), P2271 (HO2 stuck rich B1S2) |
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| 2017 Chevrolet Silverado 1500 Custom 5.3L No Start, MIL Lamp on hey guys, this one has me stumped. truck was towed in, no start. found no comm with the ecm or tcm. found blown 15amp tri-fuse, replaced, still no comm. the high and low can are working. i can talk to the bcm, ebcm, cluster, srs and a few others(im at home... |
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| 2011 GMC Sierra 1500 SLT 5.3L Excessive Emissions, Poor Idle Quality, Runs rich until full VIN: 3GTP2WE38B Vehicle runs excessively rich when cold. Fuel trims as high as plus 29 percent long term and plus 30 percent short term. Mass air running around 14 g/s and calculated air flow around 24 g/s Sometimes it will not idle down running up to around 3000 rpm. IAT... Trouble codes: P0171 (Fuel trim lean bank 1), P0174 (Fuel trim lean bank 2), P0106 (Map sensor), P0336 (Crank position sensor performance), P0463 (Fuel level sensor high voltage), P0877 (TFP switch 4 low voltage) |
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Fixes & Summaries for GM
| Fix/Summary | Answers |
