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Professional Automotive Repair Technical Discussions for July 5, 2017 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 | |
| 1999 Chevrolet Tahoe 5.7L Brake Pedal Spongy VIN: 3GNEC18R6X Customer came in with brake pedal to the floor. Bleed out brake system several times using Tech2, but couldn't get brake pedal to come up. Replaced ABS unit. Brake pedal better. Truck sits a lot. After sitting a couple of weeks, brake pedal spongy! Replaced re... |
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| 2007 Chevrolet Tahoe LTZ 5.3L No Start, Misfire VIN: 1GNFK13017 Tahoe came in with an intermittent complaint of a poor run that was not as bad with 91 fuel. It misfired on the first test drive and i checked back pressure and it would go to 10psi when it was misfiring. replaced y-pipe and cats. test drove and it ran great f... Trouble codes: P0300 (Misfire), P0106 (Map sensor) |
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| 2008 Chevrolet Express 2500 4.8L ac compressor pulley VIN: 1GCGG29C38 2008 g20 gm van 4.8l...ac pulley either rusted or broke in 2 pieces and is rattling around both in ac on and ac off position...ac does not work since...my question is can i re and re the ac pulley clutch coil on the van without removing the compressor or unbol... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2003 Buick Century Custom 3.1L Security light is on VIN: 2G4WS52J83 I did get the security light out. The customer did not want to spend the money to replace the body control module. I found I could unplug the connector from the sensor in the ignition switch and the car would still start. When I had some time I got to checking... Trouble codes: B2957 (Security system circuit low), B3031 (Security system in learn mode). |
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| 2008 Cadillac CTS 3.6L Instrument Cluster VIN: 1G6DR57V28 I took apart the dash to find stickers from US speedo all over the cluster. Mileage was close to what it is now, but date was 13 months ago. Someone has been chasing this problem for a while. I replaced the cluster and reprogrammed the correct mileage in it... |
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| 2003 Chevrolet Silverado 3500 6.6L Power Mirror VIN: 1GCJK39143 Programmed the DDM unit all is well. FWIW the Old Tough book failed and I needed to replace it with a new DELL and all is prgramming like it should. |
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| 2013 GMC Sierra 2500 HD Denali 6.6L MIL Lamp on VIN: 1GT125E85D Removed fuel pressure regulator at cp4 pump no metal shavings where present, load tested wiring with a light bulb, all passed. Tested fuel rail sensor in front of drivers rail... i heard it called fuel pressure relief valve and also fuel pressure regulator #2,... Trouble codes: P0191 (Fuel rail pressure sensor a circuit range/performance). |
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| 2000 Oldsmobile Alero GLS 3.4L Ignition security system VIN: 1G3NF52E9Y After verifying that no fuses were blown and no codes set the reason for the no-start had to be because the starter wasn't activating for some reason. These cars don't have a starter relay so I went to short the starter and it wouldn't turn over at all. Upon t... |
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