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Prev Professional Automotive Repair Technical Discussions for July 17, 2013
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Open Help Requests for GM
Help Request Answers
2001 Cadillac Eldorado ETC 4.6L Alternator VIN: 1G6ET12941
Hi Everyone, What is going on with this car is that the charging system seem to be working fine when the car is cold or when you first start it in the morning. As things come up to normal operating temp volts start dropping Starts at 14.2 volts then 14 then 13...
2003 Chevrolet Avalanche 1500 North Face 5.3L Tcase Module VIN: 3GNEK13T23
No ATC comm with tech 2 , MDI or Verus Tested power(Pin b , conn c3) and grounds( pin a8, conn c1 & pin a, conn c3), all ok with no voltage drop . Class 2 serial data ( Pin a1, conn c1), have a 0 volt to 7 volt square wave. is 0 to 7 correct?? Pin drag test ...
2003 Chevrolet Venture LS 3.4L Stall VIN: 1GNDU03E53
my question is after I got this vehicle running you can drive it and it will stall out but it cranks right back up and it is not all the time, had no codes in system but this is the problem, now any help would be greatly appreciated.
2005 Chevrolet Blazer ZR2 4.3L maf VIN: 1GNCT18XX5
Looking for direction to make sure it is the map sensor. Frequency is close at idle and 2500. Map sensor is not affected by tapping or wiggling connector. Rpm 620 1500 2500 maf hz 2420 3100 3780 tps 0 3.5 7.5 map psi 5 4 4 maf gm/s 5.32 9.7 15.2 What directi...
2009 Chevrolet Express 2500 4.8L brake lights and rear turn signals VIN: 1GCGG25C89
hey everyone I have one I need some help on..this van belongs to the a/c shop next door,the concern is that there is no brake lights or turn signals only in the rear. even though the rear brake lights don't come on when applied the 3rd brake light does work.th...
2003 Hummer H2 6.0L Air temp VIN: 5GRGN23U53
I have been blessed with working on a Hummer H2 stretch limo. A/c doesnt blow cold. I charged it, and installed a used compressor(not in that order :P) per customer request as he just bought this and the compressor pulley was seized. The customer states that i...
2007 Pontiac G6 2.4L steering VIN: 1G2ZF58B47
now costmer said steering wheel shakes by itself. we replace steering column and re calbrated sensors. still have wheel that shakes by itself. need some help. the shake will go away for short time then come back. I've drven car with snap on verus looking for g...
2002 Saturn Vue 3.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 5GZCZ63B72
We have been handed a real disaster here. No info from previous shop, customer had to get cops involved to get his car back. Now for the good stuff: Engine runs very rich. While monitoring scanner the misfires were the most on cylinders 1,4,5,6 occasionally ... Trouble codes: P0300 (Muliple cylinder misfires), P0301 (Cyl 1 misfire), P0304 (Cyl 4 misfire), P0305 (Cyl 5 misfire), P0306 (Cyl 6 misfire)
2006 Saturn Ion-2 2.2L No Start VIN: 1G8AN15F86
Vehicle came in as a start and die. Cleared 3 codes p0606, p0607 and p060e. Now vehicle is a no crank no start. The theft deterrent light shuts off after a couple of seconds but it will not crank or start. Didn't really find much out there. Expected to find pe... Trouble codes: P0606, P0607

Fixes & Summaries for GM
Fix/Summary Answers
2004 Chevrolet Express 3500 6.0L MIL Lamp on VIN: 1GBHG31U64
Thank you to all who responded to this. The right bank #1 02 sensor was the culprit. I was not able to swap them from side to side as one of the suggestions, they are side specific with unique connectors. Apparently this sensor had been replaced about a month ... Trouble codes: P0174 (Lean condition bank 2/ average long term fuel trim above 25).
2005 Chevrolet Silverado 2500 HD 6.6L MIL Lamp on VIN: 1GCHK23265
I have fixed this truck. I installed a New turbo from the Chevy Dealer. This one came with a new solenoid and sensor. I also replaced the oil feed line to the top of the turbo. After the install I did the re-learn procedure, test drove and all was good. Trouble codes: P0046 (Turbo Boost Control Position Performance), P2563 (Turbo Boost Control Position Sensor).
2012 Chevrolet Express 3500 LT 6.0L Hesitation, MIL Lamp on VIN: 1GAZG1FGXC
I ended up taking the vehicle to the local GM Dealer (under warranty). They stated that no problem exists and charged us $175.00 I picked it up yesterday and am driving it myself. The symptoms seem to have vanished. I plan to keep driving it for a couple of da... Trouble codes: P0332 (Knock sensor 2 signal low voltage), P0336 (Ckp sensor a 18/24x signal performance), P0341 (Cmp sensor circuit signal performance).
1997 GMC Jimmy SL 4.3L Mechanical VIN: 1GKDT13W5V
after continued running found excessive bearing material in oil. suspect cam thrust bearing wear allowing cam to move while running.customer opted out of further repairs.
1996 Oldsmobile Cutlass Ciera 3.1L MIL Lamp on VIN: 1G3AJ55M9T
Thanks y'all for helping me stay on track. After replacing the front crank sensor, the car ran great. The cam sensor 24x signal was good coming from the sensor It don't go to the ign module. That signal goes right to the ecm! The customer doesn't want to spend... Trouble codes: P0336 (Crank sensor a 18/24 signal), P1673 (Engine hot lamp circuit).
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