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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for May 2, 2024
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2020 GMC Sierra 1500 AT4 6.2L Blow by??
Truck came in with oil leak after dealer changed oil. would leak out between engine & transmission. checked crankcase vent tubes checked for obstructions OK pulled transmissioin & replaced rear main housing (GM) looked to be leaking @ upper RH Side. could ...

Fixes & Summaries for GM
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2004 GMC Sierra 1500 SLE 5.3L Passlock 2 VIN: 2GTEK19T34
Figured it out. Found in the PCM data stream that the ignition 1 PID was 0v. Checked diagram and that's fed by fuse IGN1 in the under hood box. measured voltage at the fuse and while it wasn't blown there was no voltage on either leg of the fuse, this fuse is ...
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