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Prev Professional Automotive Repair Technical Discussions for June 2, 2010
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Open Help Requests for GM
Help Request Answers
1993 Buick LeSabre Custom 3.8L Starting VIN: 4356345634
I had this vehicle towed in with a no start complaint. I don't have any voltage at the signal wire and I jumped it with a remote start and it starts and immediately dies. I replaced the key lock switch connected the new wires and still doesn't start or have an...
2002 Buick Rendezvous CX 3.4L Abs Module VIN: 3G5DA03E12
Code co550, c0035 c0245, in abs codes, after replacement of two new front hubs, due to wheel speed codes
2005 Buick Terraza CXL 3.5L starts and stalls VIN: 5GADV331X5
vehicle came into shop for missfire yesterday, after testing found cylinder 3 spark plug was internally defective, replaced, missfire gone. Second issue is that the van will start and stall, it doesn't matter what temp the vehicle is, ambient air temp makes no...
2000 Chevrolet Cavalier 2.2L No Start, MIL Lamp on VIN: 1G1JC5248Y
I don't know where to begin with this one. It came in with the customer complaining that the cluster didn't work. No speedo., temp, fuel, etc. When the key was cycled all the bulb checks would happen and then go out, leaving just the CEL and the Air Bag lite o...
2001 Chevrolet Silverado 2500 HD 6.6L White smoke VIN: 1GCHK231X1
THANKS FOR TAKING TIME TO CHECK THIS ONE OUT. Primary problem is heavy white smoke from exhaust at idle and worse under acceleration. Cooling system is full and holds pressure. We do have a tech2 scanner. Fuel rates on scanner are all at 0. I can increase fuel...
2002 Chevrolet Express 3500 5.7L Cuts out, Stall VIN: 1GCHG35R82
Thanks for any help! The vehicle will die at hwy speeds, during parking operations or just at idle but will restart within less than 10 seconds. When it dies on the Hwy he doesn't even have to pull over to restart it. The problem is no codes ever set, we check...
2002 Chevrolet Cavalier 2.2L ac VIN: 1G1JS12422
need help from gm techs or ac techs. car came in 2 weeks ago with complant of no ac cooling.confirmed no cool air from vents.low side pressure 45 to 55 .do not have high side reADING BAD HOSE ON MY PART.customer said freon had been added opinion is t...
2003 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Surge, Misfire VIN: 2GCEK19TX3
I know there are a lot of posts for similar issues, but I cannot find one that matches what I've got. This really feels to me like the EGR valve is stuck open at idle, except it's not a California car, and has no EGR valve. I know my problem is linked in some ... Trouble codes: P0300
2006 Chevrolet Malibu LS 2.2L cranking VIN: 6G1WB58K06
basically our customer replaced there battery, still would not crank for them and had it towed to the shop. this is a no crank condition with all else normal, i sure the security system is armed but dont see the typical GM security light? and cant find a manua...
2006 Chevrolet Colorado LS 2.8L Low speed activation VIN: 1GCCS14816
Greetings, This truck had the ABS light on all the time and there is ABS activation at slower speeds on dry pavement. Had Codes C0040 RF wheel speed sensor circuit and C0221 RF channnel in release too long. Cleared codes and they returned right away. We tested...
2007 Chevrolet Silverado 2500 HD Classic LT 6.6L MIL Lamp on, No power! VIN: 1GCHK29D77
I have this 07 Duramax that has some issues! Under a heavy load (heavy loaded trailer) it will set a P0087 and have NO POWER! The customer has been having this problem for a few weeks now. I don't have much information on it because I can never get it to act u... Trouble codes: P0087
2008 Chevrolet Express 2500 6.0L Surge VIN: 1GCGG29KX8
We have this 08 Express the customer complaint is the following. Speedometer will stop working, there is unwanted acceleration ( i assume a surge ), the ABS lamp comes on. We have doubled checked all connectors and power and ground feeds. We have not been able... Trouble codes: P0573 (circuit 1 brake high), P0122 (p0222-), P0222 (p0223-), P0223
1991 GMC C1500 Sierra 4.3L Surge, Cuts out, Stall VIN: 1GTEC14Z1M
Vehicle came in with a start and die when cold. Not cold outside, cold engine. Complaint has been verified easily. The truck will either start and die after about 3-5 seconds or it will start and run but want to die if the engine is warmed up above 140. I don'...
1993 GMC Safari 4.3L Hesitation, Misfire VIN: 1GTDM19Z1P
Vehicle arrived at our shop after another shop investigated misfire without being able to fix. Found arcing plug wire on #1 cylinder and replaced plugs and wires. Now there appears to be an EGR fault that I cannot pinpoint. If the engine RPM is raised off idle...
2004 GMC Envoy SLE 4.2L 4wd lite on VIN: RROO48576J
hi all and thanx for looking. i am looking at this for a friend. i have tried 4 scanners and can get no info out of the system. the service 4wd lite is on and 4wd is inoperable. i pulled the number 8 fuse under the hood and the lite went off for about 20 secon...
2005 GMC Sierra 1500 5.3L Instrument Cluster VIN: 2GTEK19B95
Originally the vehicle came in with an intermittant no start roughly once a week. We verified this no start 1 time. When this condition occured the dash lights come on, but there was no crank. This condition lasted for roughly 10 turns of the key. There was no...
2007 GMC Acadia SLT 3.6L Accessories VIN: 1GKEV33797
I am working on a 2007 GMC Acadia that is used by a local radio station for a "Freeway Hero". When I received the vehicle, it had over an inch of standing water in it. I extended the sunroof drains and repaired 16 other leaks (light bar and other accessories),...
1991 Oldsmobile Delta 88 Royale 3.8L Mechanical VIN: 1G3HN54CXM
Have an oil leak that is driving our shop nuts trying to find the cause...This car is a 3.8 ltr...We removed the timing cover to replace the broken magnet on the camshaft pully...( set a code code cam sensor),,,customer drove the car for about 100 miles...then...
2001 Oldsmobile Alero GL 3.4L No Start VIN: 1G45C47KB5
hey guys. got this '01 alero that doesn't want to start sometimes. fuel pump runs with immediate fuel pressure. good spark. good clean car. it decides not to start sometimes. it does have the paskey system. there are no codes, ever. i was finally able to deter...

Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick LeSabre Limited 3.8L Stall, MIL Lamp on VIN: 1G4HR53L4S
All right guys and gals. I knew the whole goofy ground issue and had certainly checked into that. I wasn't aware of the TCC issue that some had mentioned, and that's why I had posted in the first place. I just wanted a new perspective on this wonderful gem of ...
2000 Buick LeSabre Custom 3.8L cooling fans VIN: 1G4HP54K6Y
This lesabre is cooling again.The compressor was the problem,found high side pressure sensor was not high enough to turn on cooling fans.A couple guys said probably compressor.Check clutch w/engine off and would turn real easy,internal compressor problem!!!tha...
1990 Chevrolet C1500 Cheyenne 5.0L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1GCDC14H3L
I am closing this for now. the owner took the truck and we have not heard back from him about it. After the new distributor it ran so much better, he may be satisfied that it hiccups only once in awhile. Many thanks for the help on this and if I learn somet... Trouble codes: 42 (Spark control).
2001 Chevrolet Silverado 1500 4.8L abs VIN: 1GCEK14VX1
thanks for your quick replies. i did finally find the line layout for the lines through ac delco website. thanks again
2005 Chevrolet Silverado 2500 HD 6.0L noise VIN: 1GCHK23U55
Sent truck to dealer. After talking with the gm techline they say this is normal. They have changed the intake design because of this. But not a problem.
2006 Chevrolet Tahoe Z71 5.3L Drive-axles VIN: 1GNEK13T66
first,THANK YOU iatn and members that replied. there was many replies suspecting bearing failure which was not the case.Randy and Jacob hit the nail on the head. while my wife Amy hit the axle with a block of wood and bfh, i pried against the side gears and us...
2007 Chevrolet Cobalt LT 2.2L MIL Lamp on VIN: 1G1AL55F27
A huge Thanks to all who replied! But unfortunately I could not duplicate the concern in the shop. I checked, cleaned and de-electrolyzed all grounds and powers and all major connectors. The codes did not conclude any problems, except checking connectors and s... Trouble codes: P0575 (p0700-), P0700 (u0073-), U0073 (u0121-), U0121.
2003 GMC Savana 3500 6.0L Starting VIN: 1GKHG35U93
problem goes back to comunication from bcm to pcm, and lack of security lite form bcm, van was towed to gm dealer, reprogaming both bcm & pcm is what i was told fixed van. thanks for all the help.
2003 Hummer H2 6.0L power windows,locks,cluster VIN: 5GRGN23U83
Gentlemen,this Hummer is fixed.I replaced the body control module. power windows and locks worked perfect.Had a hard time finding a used BCM.As always costumers never appreciate proper diagnosis.This car had been to other shops but oh well.I fixed it.Thanks to...
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