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Prev Professional Automotive Repair Technical Discussions for December 12, 2009
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Open Help Requests for GM
Help Request Answers
2005 Cadillac STS 4.6L power assisit VIN: 1G6DC67A15
Hi Guys: Need some Cadillac help. This STS had a new power steering pump put on because it had no power assist at idle. It does have variable assist. I can not get into it with my Tech 2 because I don't have a candi adapter. No check engine light. I flushed ...
2008 Cadillac CTS 3.6L Remote starter VIN: 1G6DS57V58
Hello, I have a 2008 CTS that the customer wants to install a remote car starter on for his wife for Christmas. My position on aftermarket remote car starters is that I don't recommend them, especially on complicated newer cars. 2008 CTS's had an option to g...
1997 Chevrolet Cavalier 2.2L Stall VIN: 1G1JC1245V
Car came from another shop. It has no real pattern. It will stall out at cruise speeds, or sitting and idling in the lot. Has always restarted but once and by the time I hooked up a spark tester it started. Another shop has replaced crank sensor, ign. mod., fu...
2002 Chevrolet Impala 3.4L contaminiation of cooling system VIN: 2G1WF52E52
Hi gang ! Have this above mentioned vehivle innmy shop for a normal service. While checking the cooling system I found a visible amount of odd liquid in with the coolant, verified it was oil, oil and transmission fluid levels are good with no signs of coolant ...
2003 Chevrolet Trailblazer LS 4.2L cant fill fuel tank VIN: 1GNET16S33
I had a po440 evap system malfunction found filler neck cracked on inlet of tank. tested evap purge valve ok. tested evap vent valve ok. all lines clear and holding vac when blocking of sections. tested evape sensor in tank normal readings at rest and applying... Trouble codes: P0440
2003 GMC Sierra 2500 HD 6.0L Parking brake, high beam lights dimmly glowing VIN: 1GTHK29U73
Vehicle came in for random overnight no start. Pulled codes and only ones were B2610 and U1000 under bcm in history*** Both High beam and Parking Brake warning lamps dimly glow when vehicle is shut off, lamps will glow at proper brightness if flash to pass is...
1971 Oldsmobile Cutlass 5.7L power steering pump and gear box VIN: 342671M187
Howdy Boys n Girls, Have this long time project, been working on this same car through 3 different owners, the lastest has owned it for about 9 years, over that time we have repaired and maintained it. The first assesment for the lastest owner included overhau...

Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick Riviera 3.8L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1G4GD2219S
Hi Folks, Sorry for the delay. It took literally 6 weeks to pin this one down. It was a bad ground wire where it attaches under the ignition module. We had tightened that one before but when replacing the module found the connector to be corroded on both si... Trouble codes: 260 (QDM 2 Fault), 341 (Camshaft Sensor Signal Erratic), 361 (EST not toggling).
2003 Buick LeSabre Limited 3.8L Cuts out VIN: 1G4HP52K53
Well the majority was right even though the maf was replaced it was the problem. Unplugged it when it came back in hardley running, vast improvement. Ordered NEW OEM and replaced it so far no problems. I'm assuming it's fixed, car has been returned to custo... Trouble codes: P0101 (Mass air out of range), P0103 (Mass air failure).
2004 Buick Century Custom 3.1L pcm/ipc/bcm VIN: 2G4WS52J44
as usual, the majority of you suspected the bcm as the problem, and as usual, you were right. thanks again for taking time from your busy schedule to help me.
1996 Chevrolet Express 2500 5.0L Unknown VIN: 1GCFG25M5T
Hello Everyone, Thank you very much for all of your replies. For the record, I replaced the blower motor and resistor with genuine Chevrolet parts. Although the parts were O.E., the blower motor was manufactured in South Korea. The problem was the blower moto...
1996 Chevrolet Camaro 3.8L SRS indicator ON VIN: 2G1FP22K7T
I received some schematics for the vehicle, which were useful. I have determined that it has a harness issue with the SRS, and repair is not possible at this time due to the owner needing the vehicle.
1998 Chevrolet Malibu 2.4L antitheft VIN: 1G1ND52T7W
Well this car is starting for now and I will keep trying it until it quits. Many of you mentioned the ignition cylinder which I had replaced, but a few mentioned communication between the BCM and PCM which I will have to look at when the vehicle decides to qui...
1999 Chevrolet K1500 Suburban 5.7L Misfire VIN: 3GNFK16R6X
To all the techs that replied to my help request, each and everyone of you are great. I wish I could reach out and shake the hand of each and everyone. It was like having all of you in the shop with me. The Suburban is fixed. I went down the list of replies ch...
2001 Chevrolet Suburban 1500 LT 5.3L MIL Lamp on VIN: 1HJ5231578
Tested the pressure sensor and it was good. Replaced the canister and the vehicle did not return. Trouble codes: P0446 (EVAP system performance).
2005 Chevrolet Silverado 1500 5.3L Hours Counter VIN: 2GCEK13TX5
Turns out there is a "Special Policy Bulletin" for 04-05 years of this vehicle that covers instrument clusters for certain VIN's looks like cluster is defective, Thanks to all that pointed that out to me!
2007 GMC Sierra 2500 HD SLT 6.6L Starter, VIN: 1GTHK29D77
Soory took so long, sent my trouble to a goog freinds shop they found the problem, i was less than [...] away from bad power wire to ecm, go figure right, they fixed wire i got a ecm from dealer and they flashed it and put it in, truck runs great, gave back...
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