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Professional Automotive Repair Technical Discussions for December 21, 2013 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 | |
| 2004 Cadillac SRX 4.6L Misfire VIN: 1GYDE63A04 Hello Guys and Gals. Please assist me with the O2 Heater issue I am having. Tested the Pwr feed and recieved 12 volts to the O2 sensor. To test the ground side, I connected a test light to positive and back probed the PPL/White wire on the harness side and see... Trouble codes: P0030 (HO2S HEATER Control Circuit Bank 1 Sensor 1), P0522 (Engine Oil Pressure Sensor /Switch circuit Low Voltage), P0300 (Random Multiple Misfire) |
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| 1994 GMC Sonoma SL 2.2L Engine VIN: 1GTCS1446R Vehicle returned to service drove well smooth and quiet after being in service approx 1 month developed what sounds like obvious valve train noise severe clicking which goes away when engine is revved, seems most severe on #2 exh valve when you rotate rocker w... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1999 Chevrolet Tahoe 5.7L Poor Idle Quality, Surge VIN: 3GNEC18R6X I sent customer on his way with +1 deg.cam retard.Had to grind cap hold down screw boss on distributor to get this. It had a slight to moderate missfire when it left. He replaced the heads and just wanted to get the timing set. I have a lot of work stacked up ... |
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| 2006 Chevrolet Cobalt LS 2.2L MIL Lamp on VIN: 1G1AK55F36 Removing the intake manifold was required to clean out the clogged PCV passage in the manifold. There is a 1/4" tall and 1" wide hole in the head (that was open) and a 1/8" orifice in the manifold that was clogged. The passage goes in about 1/2" before it sp... Trouble codes: P1516 (Tac), P2101 (Tac), P2119 (Tac), P2176 (Tac). |
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