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Prev Professional Automotive Repair Technical Discussions for November 13, 2006
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Open Help Requests for GM
Help Request Answers
1991 Buick Park Avenue 3.8L abs VIN: 1G4CW53L2M
Thanks to everyone in advance for reading this. Car came in for brake check and ABS light on. Scanned ABS and found 3 codes. 26,25,37. 2 for lf speed sensor and 1 for lr speed sensor. Ended up replacing front calipers/pads and rotors as well as left side speed...
2001 Buick Century Custom 3.1L Stall VIN: 2G4WS52J01
I have this Buick that sometime dies when driveing and when you pull to the side of the road it starts right back up and runs good, sometimes it will it will pick it self up before you get pulled to the side of the road. then other times it will die and take a...
1997 Cadillac DeVille 4.6L Poor Idle Quality, Cuts out VIN: 1G6KD54Y4V
Vehicle hard to start when cold and only cold. It exhibits misfires on cyl 1 and cyl 2. I pulled all plugs and let it sit overnight with cooling system pressured it dropped a bit but I didnt see any coolant in the cylinders. I changed coils around to see if th... Trouble codes: P0300 (multi misfire)
2004 Cadillac Escalade 6.0L Flywheel VIN: 1GYEK63N14
This vehicle came into the shop with a clicking noise coming from the bellhousing area. At that time the transmission inspection hole cover was removed and the flywheel was esily seen to be broken around the crankshaft bolts. Transmission was removed ,flywheel...
1996 Chevrolet Lumina 3.1L Unknown VIN: 2G1WL52M5T
Hello everyone. We have gotten this Lumina in from the auction and on accell it has a loud popping soung coming from what seems to the transmision. Looked in the archives and was not able to see any posts that relate. On hard accell it pop pop pop in forward o...
1996 Chevrolet Blazer 4.3L heater core VIN: 1GNDT13W8T
Repeat and rapid heater core failures (5 in 6 weeks). Started with Dexcool mud, which we flushed out. The last one installed 11/7 & failed 11/13! 3 cores ago we installed a ground wire from the radiator core to the upper radiator support and at the last core i...
1997 Chevrolet S10 LS 4.3L e.c.m VIN: 1GCCS19X7V
hi everyone I'll get right to it. this 97 S-10 P/u keeps blowing the #9 ECM Batt fuse when driving sometime after 10 min or 5 hrs. It won't pop when idling in the shop, we have checked the most of the wiring and all conector for shorts or melted connectors and...
1998 Chevrolet Lumina 3.1L Cuts out, Misfire VIN: 2G1WL52M6W
After sitting over weekend, the engine won't rev up over 1300 rpm when first started. Starts right up and idles perfectly, scanner shows no misfires or codes in history. The rpm will slowly increase when opening throttle until after about an hour of testing, w...
2001 Chevrolet Silverado 1500 5.3L fuel gauge VIN: 2GCEK19T41
customer complaint is fuel gauge works intermittantly. i test drove this vehicle overnight, gauge was at 1/2 tank. dropped slightly with use. when vehicle was returned to customer they filled tank. next day gauge went to 3/4, day after was at full. on one othe...
2002 Chevrolet Silverado 2500 HD 8.1L belt noise VIN: 1GCHK29G22
Cleaned all pulleys & installed correct belt, his belt was too long. Noise was gone for 3 days. Came back & insalled new tensioner & idler pulleys. cleaned surfaces again & noise is gone. Customer called back this morning, making same belt squeal noise. We tri...
2003 Chevrolet Trailblazer North Face 4.2L head lights VIN: 1GNDT13S33
Head lights go out randomly at night after driving. Both low and high beams go out. The flash to pass lights will work. The lights will come back on after a while. We have checked for loose/damaged/overheated circuits and fuses. All looked normal. Could not du...
2005 Chevrolet Impala 3.4L cooling system VIN: 2G1WF52E2E
This car came in with the complaint that the temp gauge acts very erratick and no heat from the heater.We first started the car to test for a overheating condition.Not more then two or three minuets after car was running the temp gauge bounced up to the hot zo...
1994 Geo Prizm 1.6L radio VIN: 1Y1SK538RZ
radio is lock,ed anyone know code? am'fm' cassette
1995 GMC Jimmy SL 4.3L No Start VIN: 1GKCT18W0S
This Jimmy is has the HVS igntion system and won't start. I have scoped the cam and crank sensors and have good waveforms for both. Scoping the fuel injector, I have found that the VCM (mounted on fender well) is not pulling the control side of the injector to...
1998 GMC C3500 Sierra SL 7.4L Clutch VIN: 1GDKC34JXW
Original complaint on this vehicle was that the clutch pedal suddenly was lost. Vehicle was towed in and the clutch pedal was on the floor. Upon dissasembly, the clutch disk was in relativly good condition(replacement wasnt neccesary) but disk and related part...
2000 GMC Jimmy Diamond Edition 4.3L transfer case shift motor VIN: 1GKDT13W1Y
this jimmy has a intermittant C0308 tranfer case code. we have checked the wiring and ohm'ed the motor wires according to diagnostics... seems like a intermit short in trans shift motor.. just wondering if these have been a problem before i spend the big bucks...
2001 GMC Safari SLE 4.3L water pump VIN: 1GKDM19W11
Since they replaced the water pump and the intake gasket.when the truck is hot and you floor the pedal, the water pump gasket is destroy. we have replacer the gasket once ,the second time we replace the gasket and the water pump, the problem still there. if yo...
2001 GMC Sierra 2500 HD SL 6.0L Dash Lights VIN: 1DTHK29U31
This trucks's issue is that the Dash illumination lights do not work when the headlight switch is in the Automatic position (the headlights DO come on when they are supposed to). The dash lights DO work when the headlight switch is in the Manual position. In A...
2004 GMC Canyon SLE 3.5L windshield wipers VIN: 1GTDT13614
When u start the truck the wipers come on and stay on they work on high and low but no intermittent and wont cut off .When u unplug the motor they will cut off but only work on high and soon as you cut the ignition off and back on they go back to the same prob...
1992 Oldsmobile 88 Royale LS 3.8L No Start, Stall VIN: 1G3HY53L0N
cust stated that it would run rough and stall intermittantly at stops couldnt get it to act up for two days then while running at idle in gear it started to stumble when goosed it would die imeadeatly like the timing advanced and it fired the wrong cyls gradul...
1999 Pontiac Grand Prix GT 3.8L Trac light alway on VIN: 1G2WP52K8X
Greetings GM techs, Got this car in from a body shop and turns out I'm the 2nd shop to get a whack at this problem. This car was involved in a relatively minor accident on the RF corner and now the Traction control light is always on. Hooked up with my Genisys...
2001 Pontiac Grand Prix GT 3.8L Hesitation, Cuts out, MIL Lamp on VIN: 1G2WP12K41
This 2001 Pontiac Grand Prix is in the shop right now. It idles fine, and runs fine up to about 4000RPM. Then it starts missing and shaking all over. Fuel pressure and volume are OK, fuel filter is fine, spark is good across RPM band, MAF, MAP, HO2S, TP all re... Trouble codes: P0300
2002 Saturn L200 2.2L MIL Lamp on VIN: 1G8JU54F02
Car has code 171b o2 sensor indicates lean, lt fuel trim is at around 24%. map is at 29.3. which seems to be right. intake air temp is good. coolant temp is good. tps is good. it seems like i have a vaccum leak but i cant find one to save my life. i have looke... Trouble codes: P171

Fixes & Summaries for GM
Fix/Summary Answers
1998 Buick Park Avenue 3.8L No Start VIN: 1G4CW52K5W
Hey all, Thanks for all the replys! This one turned out to be a faulty IAC motor. When I removed it and pushed it in all the way the car ran correctly. Then after it set back to the position it was supposed to be in it would act up again. One thing I forgot ...
2000 Chevrolet S10 2.2L master cyl VIN: 1GTCS1456Y
this truck hadf a new lift kit installed with the wrong steering knuckle installed. when you turn the caliper would hit the stop on the lower control arm pushing the caliper piston in making a void between the disc pad and the rotor. thanks for the help
2000 Chevrolet S10 4.3L engine VIN: 1GCDT19W0Y
Thanks to all that replied! 7 out of 9 replies said to check the crank end play for a worn thrust bearing, and you were right! Spec is 2-8 thousandths, my reading is 30. the engine will be coming out for a rebuild in the near future. As allways money is an iss...
1972 Oldsmobile Cutlass 350CID no spark VIN: 3J57K2R175
I got it running!!! Whooooo hoooooo!!! Thanks guys, the cust. is satisfied, I ended up running a rubber hose instead of replacing the steel fuel line. After I set the points and put the distributor back in no adj. was needed on the dwell meter or timming. I th...
1997 Oldsmobile Aurora 4.0L coolant loss VIN: 1G3GR62C5V
Sorry for the delay on closing this out, we have been waiting for the customer to decide on repairs. Even though the car was not accualy fixed because the repairs were declined, head gaskets turned out to be the cause, again. Thanks for all your input. And tha...
1999 Oldsmobile Bravada 4.3L heater VIN: 1GHDT13W1X
It was the blend motor like the other replies in the a/c setion eluded too. put the new motor in and it works just fine. Thanks to all those whom replied.
2000 Oldsmobile Silhouette Premiere 3.4L MIL Lamp on VIN: 1GHDX13E6Y
Thank's to all that took the time out to reply!..Im sorry for taking so long to post a fix to this issue.I actually fixed it on the 10th.What I found was,I had over looked mass airflow readings ,and did not think that being 5 grams off the normal window would ... Trouble codes: P0131 (low voltage bank 1 sensor 1), P0137 (low voltage bank 1 sensor 2).
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