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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for July 2, 2008
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2001 Buick LeSabre Custom 3.8L power windows and locks VIN: 1G4HP54K61
Good morning techs, I have this Lesabre and also a Bonneville doing the exact same thing. I figured that if a small shop like me had 2 cars with the same symptoms, there might be a problem here. So please let me know if anyone has fixed this and what it was. T...
2002 Buick Century Custom 3.1L Misfire, MIL Lamp on VIN: 2G4WS52362
i have a random misfire code with mis on #3 cylinder under very light power brake and light cruise. swapped spark plugs, wires, coil, injector. no change. good spark pattern, good injector voltage and amp patterns, weired thing is when you disconnect egr valve... Trouble codes: P0300
1991 Cadillac DeVille 4.9L Blower VIN: 1G6CD5383M
Car came in because local dealer said compressor got hot and stopped running. Needed new compressor. Oh well. Air gap was excessive. Set air gap and that problem solved. Blower is inop, now. I think it worked when it came in. Signal wire to the power module...
1998 Cadillac Catera 3.0L Charging System VIN: W06V52R5WR
Customer had intermittent cranking problem in February. After testing system, recommended and replaced battery. Vehicle came back this weak with same complaint. Battery load tested fine. No draw present. Charging voltage was 13.8 when we first ran the vehicle,...
1994 Chevrolet S10 Blazer 4.3L ignition VIN: 1GNDT13W2S
this vehicle has a rough idle and after runni\ng about 3 or 4 miles it quits wait about ten minutes and it starts back can not get scan data has communication error think bus is bad has mil light always on and vehicle will idle at ashop for hours and never die...
1997 Chevrolet C2500 Cheyenne 5.7L brakes VIN: 1GCGC29R6V
This vehicle was brought to the shop with an owner complaint of the brake pedal creeping to the floor with light to medium pressure on the brake. The owner stated that he had installed a new master cylinder. When that didn't help he acquired a used abs valve a...
1997 Chevrolet Camaro 5.7L blown head gasket
I fought this thing all /mornining afternoon. it has a blown head gasket and I am trying to pull the heads off in the car. Passenger side exhaust manifold has egr pipe to it and don't know what its going to take to take this off (at the rear of manifold) It is...
2002 Chevrolet Silverado 2500 HD 6.6L No Start, Poor Idle Quality VIN: 1GCHK29112
Hello Group, I have ended up having to sweep up everybodys mess again. This truck had a no start fault the AA towed it to our local GM dealer they rang the owner[who was on his trip home in the recovery truck] and told him that the truck was now running and th...
2002 Chevrolet Impala 3.4L bcm VIN: 2G1WF55E32
This Vehicle has codes U1000, class 2 serial comm. problem and P1626 Anti-theft system fuel enable circuit. I can access all of the class 2 devices with the exception of the (missing) radio and the BCM. The battery was replaced and now the car will not crank a...
2002 Chevrolet Malibu 3.1L abs inop VIN: 1G1ND52J12
Hello fellow techs, I am working on this chevy malibu that customer complaint of abs light on. I test drove the car and noticed that the light was on and also no abs fuction. I pulled a code c1218 Pump motor circuit malfuntion , cleared it 2 times and both ti...
2004 Chevrolet Impala 3.8L MIL Lamp on VIN: 2G1WF55K24
Came in with check engine light on and code P0455 large evap leak. This is a police car that idles a lot. Purge line to solenoid was heat cracked,so replaced and cleared code, was fine for about a week and came back with same code. Replaced fuel cap and make s... Trouble codes: P0455 (Large Evap leak)
2005 Chevrolet Cavalier 2.2L No Start, MIL Lamp on VIN: 1G1JC52F55
Customer drove 20 miles 4 hours later car would not start. Had all of the codes above the first time then after clearing the computer only get code P1630 & U1000. The engine cranks but does not start. The fuses are ok. Also watching the scaner in power mode se... Trouble codes: P1630 (Theft deterrent lean mode active), U1000 (Loss of Serial communication for class 2), U1008, B2707 (Gearshift unlock circuit low), B2960 (Passlock cylinder data incorrent)
2001 Pontiac Aztek 3.4L No Start, Stall VIN: 3G7DA03E11
Intermittently starts and dies. We followed Mitchell Repair flowchart for no-start ignition system check. Followed the flowchart all the way through until it says to replace the ignition module. When it dies, there is no spark. We replaced the ignition modul...

Fixes & Summaries for GM
Fix/Summary Answers
2004 Buick Rendezvous CX 3.4L All Windows VIN: 3G5DB03E84
After talking to the customer and getting more information from him, he admitted to spilling hot coffee in the master switch shortlty before he started having problems. Now knowing this information and your replies we replaced the master switch and retested f...
1997 Cadillac DeVille 4.6L compressor VIN: 1G6KD54Y2V
When I pulled the expansion valve to clean it I found it was installed backwards by the shop that had it before me, a lube and oil change shop. In my post I asked if there was anything I should check before replacing the compressor,now I know if the car has ju...
1996 Chevrolet Corsica 3.1L Hesitation, Surge, Cuts out VIN: 1G1LD55M5T
quick update got a lot of good advice but to no avail took intakes apart again all was good,no visible broken valve springs, crank snsrs were good no cracks, knk snsr ok,o2s good,cam snsr good, no external vacuum leaks,noticed when warm vacuum fluctuates when ...
1998 Chevrolet S10 2.2L speedometer VIN: 1GCCS1449W
well it seems that you can not just switch from mile's to kilo's you have one or the other. I caught this customer in a little white lie. I guess he can just find another shop. again thanks for all the help,even the local chevrolet dealer could not figure this...
2001 Chevrolet Suburban 1500 LT 5.3L intrument cluster VIN: 1GNFK16T21
I would like to thank Dave, Mike, John , Sam , Ricardo and especially Alex the test you suggested led me to believe the bus bar was internal in the headlight switch itself so i replaced it and dash lights all work now . Sometimes maybe we look to hard and over...
2004 Chevrolet Silverado 1500 LS 5.3L transfer case VIN: 2GCEK13T14
Sorry for the delay this truck got sent away and then sent back. The fix was a new module and flash. The problem was there is a mechanical lock on the motor to hold the motor when its not being moved. It has fused power and the module grounds it. The module wa...
2002 GMC Sierra 2500 HD 6.0L Misfire VIN: U72E240745
Hey Fellow Techs. Thanx for the replies and encouragment. Your feedback follows my thoughts about mechanical issues. Today I got the engine into fail mode or into its miss. Pulled out #2 plug as quick as possible, installed compression gauge, cranked engine wi... Trouble codes: P0300 (random engine misfire).
1999 Oldsmobile Aurora 4.0L head lights-park lights VIN: 1G3GR62C41
2001 Pontiac Grand Am SE 3.4L Suspension VIN: 1G2NF12E21
thanks to who all replied. i put both lower control arms on and car still pops more noticeable in reverse in a turn.customer coming to get car so i dont have time to check more at this time. thanks again
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