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Prev Professional Automotive Repair Technical Discussions for January 14, 2013
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2001 Chevrolet Silverado 1500 4.3L No Start VIN: 1GCEK14W71
Hi guys, I have this truck which was towed in from another shop. Customer was complaining of intermittant rough running and non start but it will not start at all now. Engine cranks over but will not catch. Distributer cap, rotor arm, coil and wires all loo...
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2002 Chevrolet Silverado 2500 HD 6.6L Surge VIN: 1GCHK23152
This truck starts a hard surge at idle (almost stall) when coolant temp reaches 140 deg. What i see is happening is the throttle plate slams closed for a few seconds then opens again just before it stalls. this cycle happens about 4 to 6 seconds apart. the egr...
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2002 Chevrolet Impala 3.4L No Start VIN: 2G1WF52E22
truly a weird one. vehicle attemps to start but doesn't,then is a crank no start. good fuel pressure and spark presant when failing. no injector pulse. verified cam,and both crank sensor waveforms in good shape at pcm. all pcm powers and grounds also ok. leavi...
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2005 Chevrolet Colorado Z85 LS 3.5L Power lock/window VIN: 1GCDT136X5
It is really bothering me.I have no driver side window operation or power door lock actuation.I have checked for power and ground and it is good. The other windows work fine. I have read about a "cold boot" procedure where you disconnect the battery cables and...
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2007 Chevrolet Tahoe LTZ 5.3L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1GNFK13067
Vehicle came in with a dead miss. Only had P0300 set - misfire data shows constant misfires on #1 and frequent misfires on #8 all other cylinders are ok. I pulled the #1 spark plug and it was soaked with fuel as was #8. I tested both coils for Kv output with m... Trouble codes: P0300 (Random misfire)
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Fixes & Summaries for GM
Fix/Summary Answers
2005 Buick LaCrosse CXL 3.8L Turn signal/Hazard Flasher VIN: 2G4WD56245
Thanks to all who replied. Many suggested that left front speaker is source for "chime" but it checked out fine. Others suggested speaker in dash but that too seems to be working. Tried Robert from Maryland's suggestion to correct a logic lock issue but still ...
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2002 Chevrolet Tahoe LS 4.8L 3-4 Shift VIN: 1GCGK13V92
This truck is good, the problem was inside the trans it was commanding 4th but it would not shift Tcc was engaging 0 slip. we decided to get another unit, the rebuilder said most likely an internal leak. Thanks Nello
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2007 Chevrolet Equinox LT 3.4L Idles too high VIN: 2CNDL73F97
It has been three weeks since I replaced the throttle body on this vehicle and there has been no complaints. I did have an issue with a idle relearn but quickly cleared that also. Thanks for all of the replies that I received, they were very helpful.
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2008 Saturn Vue XE 3.5L 1-2 shift VIN: 3GSDL43N58
Thank you, thank you, thank you to everyone who responded. We reprogramed the PCM/TCM and all is working good now.
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