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Prev Professional Automotive Repair Technical Discussions for March 21, 2014
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Open Help Requests for GM
Help Request Answers
2004 Cadillac SRX 3.6L Poor Idle Quality, won't rev VIN: 1GYDE63744
A friend has this vehicle at his shop and wanted me to do the throttle position relearn for him so I went by his shop to help ! When the vehicle came in it wouldn't rev up pass 1500 rpms and had several codes so he replace the TBI and the pigtail ,when that di... Trouble codes: P2176 (Min. idle not learned), P0122 (Throttle Position TP Sensor 1 Circuit Low Voltage), P0222 (Throttle Position TP Sensor 2 Circuit Low Voltage)
2000 Chevrolet Impala 3.4L No Start, Poor Idle Quality, Stall VIN: 2G1WF55E7Y
Simple Friday job gone wrong. Vehicle brought in for coolant leak. Started fine and ran ok when brought in. After repair vehicle would only start and run with vacuum hose removed off of intake or light accel. pedal opening. Rechecked all connections and previo... Trouble codes: 405 (EGR cicuit low)
2003 Chevrolet Express 3500 6.0L air conditioning VIN: 1GBJG31U33
Van will idle fine cold but after 5 minutes of running will idle up to 1700 rpms and also the a/c is inoperative. On the MODIS data all sensors are reading correctly, however no response from IAC step up/down test. Checked for vac leaks - none. Replaced IAC st...
2003 Chevrolet Impala 3.4L Hesitation, Noise on accel VIN: 2G1WF52E43
I bought this car from my father who has all service records. I noticed under moderate acceleration the car has some hesitation from stop to about 40-45 mph. When under heavy acceleration the car does not hesitate but makes a high pitch whining sound like a su...
2004 Chevrolet Impala 3.4L Speedometer
Hello folks! Just looking some advice from you guys that had similar problem like me. This impala came from a dealer that brings their cars to get inspected and one of the issues it's about speedometer not working at all. First I removed and tried to fix it my...
2007 Chevrolet Tahoe LTZ 5.3L driver's airbag VIN: 1GNFK13077
Hello, This "07 Tahoe came in with B0084 for Pass. side impact sensor and P0013 "driver's airbag stage 2 loop ckt fault". Replaced # 2 impact sensor and corrected code p0084. Replace clockspring asby after finding higher resistance in stage two compared to ...
2009 GMC Sierra 3500 HD WT 6.6L MIL Lamp on VIN: 1GTHK79659
Ok this is an intermittent problem,seems to happen only when started cold and not every time that it is started cold.With an amp clamp on the main power to the heater it looks like it starts at about 150a,then starts to taper down after a min.or two.(that is a... Trouble codes: P154C
2003 Pontiac Grand Prix GTP 3.8L battery VIN: 1G2WR52133
Hellow guys and gals... This is my personal hot rod/money pit. But it is my choice. My issue is battery drain. My biggest concern is the VCU/On Star module at the left rear trunk area. Come to find out this can draw up 200ma every 8/10 mins. Question is, best ...

Fixes & Summaries for GM
Fix/Summary Answers
2003 Chevrolet Impala 3.4L rear defogger VIN: 2G1WF52E93
The rear defogger does work on this car, just not the entire grid so that eliminates the melted wire in r. kick panel, which I have repaired a bunch of those in the past. I knew there was 2 broken segments, I went ahead & repaired them. Still has the static th...
2007 Chevrolet Silverado 2500 HD Classic LS 6.6L Hesitation, Cel VIN: 1GCHK23D57
Looks like we have this one beaten. The aftermarket reman turbos were the problem, not creating low end boost, for that matter high end boost either. With the repaired original turbo, the numbers were better. We did do the relearn in the shop and it did set... Trouble codes: P0299 (Turbo Underboost).
2009 Saturn Vue XE 2.4L heater core VIN: 3GSCL33P79
There are three pins along the top of the panel that snap into "sockets" in the firewall. two of them did not release as they should. after an hour or two of pulling and yanking the screws that attach the pins to the panel pulled out and we got the panel out. ...
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