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Prev Professional Automotive Repair Technical Discussions for March 28, 2014
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Open Help Requests for GM
Help Request Answers
2006 Cadillac CTS 2.8L Power steering VIN: 1G6DM57T16
This power steering system is pushing fluid out of the fluid tank. I have test drove and test drove and test drove this vehicle and have not been able to actually see this phenomena happen. I will top off the fluid and send him on his way and a few days later ...
2006 Chevrolet Tahoe Z71 5.3L First,second, third, and drive. Reverse works VIN: 1GNEK13T16
Vehicle has no codes. Trans only works in reverse but sometimes if it's in drive in will try to move forward and bucks a little like it's locking up. Just want to see if you guys think there is anything I should check first before I call a trans. Was also low ...
2007 Chevrolet Impala LTZ 3.9L A/C Control Head Compressor VIN: 2G1WU58RX7
AS usual, THANKS for any posted answers. Car came in and complaint was no heat at Idle. Checked under hood,and saw coolant leak. No coolant in overflow, and removed pressure cap revealing no discernible coolant in system. Pressure test, and found water pump le...
2008 Chevrolet Silverado 3500 HD LTZ 6.6L Hesitation, Cuts out VIN: 1GCJC33688
Came in with a knocking engine, replaced long block. A code P0087 showed up and the engine was cutting out at 2200 rpm. fuel pressures were not matching so replaced wix fuel filter with ac delco. Fuel pressures matched but still got the same code when engine s... Trouble codes: P0087 (Low rail pressure previously)
1996 Geo Tracker 1.6L convertor VIN: 2CNBE1862T
car came in po740 tcc solenoid circuit open tried to engage lockup solenoid manualy at relay does not engage dropped pan checked tcc solenoid with power probe does not operate installed new tcc solenoid checked operation at relay will lock up torque convertor ...
1993 GMC Jimmy SLE 4.3L No Start, Stall VIN: 1GKDT13W5P
This was towed. Cranking but no start. In the shop, suddenly it had spark, and eng was running, but stalled after 20 minutes. Replaced the ignition module. Samething happened. Stalled after 20 minutes. Replaced ignition coil. It did not stall anymore. After 1 ...

Fixes & Summaries for GM
Fix/Summary Answers
2004 Cadillac CTS 3.6L MIL Lamp on, Reduced Power Mode VIN: 1G6DM57754
Thanks for the 7 replies-the fault was a rubbed through harness at the top of the bell housing on the passenger side causing an intermittant short to ground.Barely able to see up there but a slow,close inspection found it.No volt meter,scan tool or lab scope c... Trouble codes: P2121 (APP Sensor 1 Performance-Circuit Low).
1998 Chevrolet K1500 Cheyenne 5.7L Poor Idle Quality VIN: 2GCEK19R0W
thanks to all that replyed,pulled intake off tonight and sure enough intake gaskets bad ,they were actually sagged down in the middle on both sides,#5 was close if not leaking also.. Trouble codes: P0306.
2005 Chevrolet Silverado 1500 4.8L Mechanical VIN: 1GCEC19V05
Thanks for everyone's input. We replaced the pushrod, turned it over by hand to compare lift/extension of pushrod before installing rocker arm and again after. Lift appeared same as other valves. After reinstalling everything else cranked and have test driven ...
2008 Chevrolet Cobalt LS 2.2L Mechanical VIN: 1G1AK58F88
CUSTOMER DECLINED REPAIRS. SI is complete erroneous on this job requires dash removal ETC. THANKS GUYS I CALLED CUSTOMER with what I suspected and forgot to close the ticket...
2009 Chevrolet Malibu LT 2.4L Cuts out, Stall, Bucks VIN: 1G1ZJ57B09
Let me start by explaining the set conditions for these codes, GM states that when the control module detects an incorrect or lack of voltage on the injector circuit for more than 6 seconds to set the DTC for the appropriate cylinder. The odds of all four inje... Trouble codes: P0201 (Injector 1 control circuit), P0202 (Injector 2 control circuit), P0203 (Injector 3 control circuit), P0204 (Injector 4 control circuit).
2001 Pontiac Bonneville SSEi 3.8L epc pressure VIN: 1G2HZ54101
Well I wanted to just make an update and recap with what I've learned but this is the only way I can add info, I plan on adding a fix eventually though. Thanks for the replies, I really appreciate the willingness to help! I know there are many people on here ...
2006 Pontiac Pursuit GT 2.4L TCM Communication VIN: 1G2AN15B16
Well shopkey replied telling me that the Cobalt SS is the match to this Canadian Pursuit GT. Perfect. I confirmed no power to the B+ at the TCM pin 32 red/wht. This power comes from the ECM/TCM fuse in the RH side center console (it's good and has power) from ...
2004 Saturn Vue Red Line 3.5L unknown VIN: 5GZCZ63414
Thanks to all who replied. Replaced motor mounts 1st, engine had lots of movement when under load. That fixed the motor movement issue but not vibration. The CV shaft were recently replaced else where, but we decided that could be the only thing left. So we re...
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