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Prev Professional Automotive Repair Technical Discussions for May 4, 2015
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Open Help Requests for GM
Help Request Answers
2004 Cadillac SRX 3.6L Cuts out VIN: 1GYEE63794
This vehicle was bought from a dealership next door to me, and they had the transmission rebuilt, and supposedly replaced the throttle body at the same time, because I told them it needed it. The throttle body connector had also been replaced in the past. The ... Trouble codes: P0221 (App senor2 out of range), P2231 (HO2S b1s1 signal shorted to heater), P2234 (HO2S b2s1 signal shorted to heater), P0102 (MAF ckt signal low)
1995 Chevrolet Blazer 4.3L MIL Lamp on VIN: 1GNDT13W4S
We had replaced the purge valve on the intake before because a plug had blown out of the solenoid. The light came back on a week later and we found the hose off at the purge pressure switch right next to the purge valve. We hook the hose up and cleared the cod... Trouble codes: P0441 (No flow during purge), P0172 (Rich Bank 1)
2004 Chevrolet Silverado 2500 HD 6.6L Misfire VIN: 1GCHK23194
I installed all eight fuel injectors due to excessive smoke. The truck ran fine just smoked. The truck came back after 1 week with a slight engine miss sometimes at idle. It seems worst when it returns to idle after a snap throttle. I also noticed a slight kno...
2007 GMC Sierra 1500 WT 5.3L Misfire, MIL Lamp on VIN: 1GTEC14057
ok I know this is crazy but this is a fleet vehicle and they want it fixed it only throws misfire codes at 5,000 rpm or more during hard accel and it shifts hard at that point also no misfires are felt only shown on tech 2 any ideas ?? Trouble codes: P0300
2009 Hummer H3 3.7L MIL Lamp on VIN: 5GTEN13E39
Concerned that the actuator solenoid was sticking I removed the solenoid and noted that the ports were "slimed" up with thick oil.) I replaced with an Echlin aftermarket brand and drove the vehicle for monitors to run. P0017 code came back. After talking to a... Trouble codes: P0017 (Exhaust Camshaft Position CMP Correlation)
2002 Saturn L200 2.2L Hvac VIN: 1G8JU54FX2
Customer came in with a/c not working properly during the day. A/c freon was too low to turn compressor on, but customer said a/c would work in the am. We found there was no freon we charged it and found it wasn't blowing cold. Hvac module was sorted out so we...

Fixes & Summaries for GM
Fix/Summary Answers
2008 Chevrolet Cobalt Sport 2.4L cluster VIN: 1G1AM18B28
Thanks for all those that replied. Fix ended up being TCM. Internal problem was bringing bus down. Verified this with heat gun. Let vehicle sit overnight till cool and then in the morning, key on removed TCM from bracket and applied heat. Took only about 20 se...
2008 GMC Sierra 1500 Denali 6.2L No Start VIN: 2GTEK63878
Thanks for all the help. At this point the customer has not returned and has opted to run it until it fails. I will update as if we end providing a repair. Thanks again, Mark Trouble codes: P0016.
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