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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for February 13, 2008
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Open Help Requests for GM
Help Request Answers
1996 Buick Roadmaster Limited Collector's Edition 5.7L MIL Lamp on VIN: AG4BR82P6T
hello and help car came in with code p0412 replace water soaked air pump road test no light till customer drove for a short while found tsb about removing relay and plugging hose did all that still can't make light go out any suggestions?? thanks in advance st... Trouble codes: 410 (air pump), 412 (air pump)
1999 Buick Regal LS 3.8L Body control module VIN: 2G4WB52K5X
Hello and thanks for any help. We replaced the BCM on this 99 Buick Regal because of an intermitant no start problem. We just got a Tech 2 and are not proficient with it yet. The car starts and runs fine now however the Air Bag light is illuminated. We get a ...
1982 Cadillac Eldorado 4.1L MIL Lamp on VIN: 1C6AL5784C
Greetings fellow Techs. Hope someone can shed some light on this early Eldo. Car came in with a no charge condition and battery low, loose fan belts, etc.. Installed a new alternator and charged battery, adjusted belts. Now all is well except it has a hard 20 ... Trouble codes: 20 (Open Fuel Pump Circuit)
1998 Cadillac DeVille d'Elegance 4.6L Stall VIN: 1G6KE54Y3W
Cust. came in with the check engine light on after having work done at another shop. Cleared codes and drove car the only codes that returned were p0174 system too lean bank 2,p0463 fuel tank level sensors high input. I checked the fuel pressure 48psi so check... Trouble codes: 1599 (engine stall or near stall detected)
1989 Chevrolet S10 4.3L Cuts out, Stall VIN: 1GCDT1479K
hi guys this truck runs like junk when cold scanned parameters all look good etc iac etc gm has a updted prom for this reason would like your in put first thanks for the help
1995 Chevrolet Tahoe 5.7L Hesitation, Surge, Stall VIN: 1GNEK18K5S
Student vehicle. Symptom is very bad surge (may die)just off idle and under load. Also surges when de-accelerates and come to stop, like at a traffic light. At temperature only. Does not surge when cold. On Modis data stream EGR goes to 100% and seems to be op...
1995 Chevrolet Blazer 4.3L shift solenoid a VIN: 1GNDT13W5S
hello all, this is for all you gm guys this 95 blazer is coming up w/ a p0753 shift solenoid a circuit fault. after doing some resurch i found that there is a common issue w/ the ignition switch and a carbon build up that cause power not to be supplied to all...
1996 Chevrolet Caprice Classic 5.7L odometer VIN: 1G1BL52P3T
The odometer appears sometime and sometime it doesn't. There is no consistency as to when its going to appear or when its not.
1999 Chevrolet Silverado 1500 5.3L 4 wheel drive VIN: 2GCEK19T8X
I've tested everything and there seems to be no ground to the system. Unfortunately I don't have access to any electrical diagrams. Has anyone had this problem. your help is greatly appreciated.
2002 Chevrolet Impala 3.4L No Start VIN: 2G1WF55E52
Vehicle came in with the BCM going haywire and codes in all the other modules for the BCM. After confirming good powers, grounds and no shorts, I replaced the BCM. The problem I am having is the Passlock reset procedure is not working. I have done the whole "... Trouble codes: P1631 (PCM detects incorrect password)
2002 Chevrolet Venture LS 3.4L No Start VIN: 1GNDX03E62
thanks for any help that anyone offers in advance thank you history : owned by same ind for number of years no problem then on trip died was able to restart made home after a few more stops died at home never ran since . towed in did many checks found no pulse... Trouble codes: 1336 (crk relrn not done since comp replaced)
2006 Chevrolet Trailblazer LT 5.3L hvac VIN: 1GNET13M56
no airflow from the vents. it seems to be stuck on floor, but if you select mix with defrost also, it will switch on defrost. all blower speeds and temps work correctly. this trailblazer has the automatic climate control. did the GM reset procedure by pulling ...
2006 Chevrolet Tahoe Z71 5.3L rear axle shaft VIN: 1GNEC13T86
rear end needs axles removed to replace bearings, axles wont pull out. c clips are removed, reluctors behind axle bearings wont let axle come out.
2002 GMC Yukon SLE 5.3L moan/groan noise VIN: 1GKEK13T82
We have two vehicles that are exibiting very similar problems. Both vehicles have had the intermediate steering shaft replaced by the dealer for the usual clunk type noise. Now there is a moaning/groaning noise from the steering system. The customers Yukon ha...
2000 Pontiac Bonneville SE 3.8L Stall VIN: 1G2HX54K8Y
drive vech highway and randomly it will cut out and restart we are going to atemped to take a snap shot and hook up a fuel guage and run the vech to try and see what could be going on . we have had the vech runing in the shop and could not get it to stall .any...
2003 Saturn L300 3.0L starter VIN: 1G8JW54R43
Hi to all. No crank in start mode, voltage at ignition switch red wire ok, no voltage at ignition switch yellow wire in crank mode. Replace ignition switch still no voltage at yellow wire in crank mode. Turn key on jumper red and yellow wires to start, engine ...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Buick Park Avenue Ultra 3.8L security system VIN: 1G4CU5212V
HI Techs,it has been more than a week now and no more starting problems for the customer. Thanks for your time,Larry was the most correct,with taking the key out after the third key on cycle opening the door and starting the car,this was very close to the way...
1998 Buick LeSabre Custom 3.8L Poor Idle Quality VIN: 1G4HP52K6W
hi.thanx guys for all the great onfo.replaced upper intake manifold and lower intake gasket.Dried out cylinders(they where soaked with cooland along with manifold).Installed new ac delco spark plugs.Car now runs graet.Happy customer.Happy shop and happy me.tha...
2001 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP54K91
The new vent valve we installed was not closing. Installed with another new GM valve, the parts people at the GM dealer said they were having problems with this part. Thanks for all your help, United Tire, Robert [...] Trouble codes: 440 (evap leak), 442 (452 - gsa cap), 452 (gsa cap).
1994 Cadillac Seville SLS 4.6L Digital Part of the IPC VIN: 1G6KS52YXR
Thanks to those who responded. The fix was the radio. Unhooked it and the ipc canme to life. As far as I can tell the only connection between to two would be through the dimming circuit for the interior lights. Put a new radio in and everything is workin. Tha...
1996 Chevrolet Cavalier 2.2L Starting VIN: 1G1JC5240T
this one accually ended up being eazy.when i removed the plug wires to replace the module i numbered them to make sure that i put them back where they were also when i checked compression i numbered them to make sure they went back where they were and as it tu...
1997 Chevrolet Cavalier 2.2L Starting VIN: 41VS872634
Thanks for all the help everyone, the gas was contaminated, I guess we didn't let it run long enough off the motovac to clean out the rail. Runs okay now but there's a slight missfire in #1 cylinder, I think it's the injector itself so I may have more work yet...
1992 Oldsmobile 88 Royale LS 3.8L No Start VIN: 1G3HY53L2N
Hi Everyone, Sorry for the delay. It was indeed the wires at the crankshaft position sensor. One was bare and we repaired the bad section of wire and thy have not called back to say the engine has stalled. Thank you again for everything. Wouldn't it be nice...
1993 Oldsmobile Cutlass Supreme 3.1L Surge VIN: 1G3WH51TXP
Well guys, this one snowballed fast. The car was at our shop for a few days regarding the surge, and during those few days it aquired a dead miss. So new priority at hand - fix the miss. Found cyl #5 to have 50psi with all others at 150-160psi while hearing...
2005 Pontiac G6 GT 3.5L Starter VIN: 1G2ZH54875
Thank you for the replies.Tim from Pennsylvania was correct when he said that the PCM controls the starter relay and it will sometimes continue to crank under certain conditions after you let off of the key.This is the way these cars are supposed to act.There...
2001 Saturn SL1 1.9L MIL Lamp on VIN: 1G8ZH52891
THANKS FOR ALL THE REPLIES MOST EVERYONE SAID TO CHECK THE TEMP SENSOR. IT WAS OK. WE DID FIND A BLOWN INTAKE GASKET CAUSING A MISS IN NUMBER 1 CYL. FIXED THAT PROBLEM BUT WAS STILL GETTING FALSE DATA THROUGH FREEZE FRAME AND CODES.REPLACED ECM AND ALL PROBLEM... Trouble codes: P0300 (multiple miss fire), P0326 (knock sensor 1 signal out of range), P1584 (cruise disabled circuit fault), P1599 (power management mode or engine stall), P1620 (low coolant circuit), P1624 (pcm ram performance or snap shot available).
2003 Saturn Vue 3.0L alternator VIN: 5GZCZ63B73
Thank You for the reply's The problem was in the wiring harness going to alternator half way back from the alternator there were frayed wires replaced harness and problem is gone
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