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Professional Automotive Repair Technical Discussions for January 6, 2026 International Automotive Technicians' Network (iATN) - Members Only |
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| (Also Available: All, Asian, Chrysler, European, Ford, GM.) | ||
| Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder. | ||
Open Help Requests for GM
| Help Request | Answers | |
| 2017 GMC Sierra 2500 HD SLT 6.6L No Start VIN: 1GT12TEY4H Checked battery's both good also checked fuses all good, but fuse 51 under hood fuses is ecm 30 amp fuse is good but has no power key on or off, check resistance at dlc between pin 6 and 14 reads 60 ohms. Relay 64 run/crank looking at relay from front of t... Trouble codes: U0100 (No communications with ecm), U0422 |
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Fixes & Summaries for GM
| Fix/Summary | Answers |
