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Prev Professional Automotive Repair Technical Discussions for September 23, 2005
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Open Help Requests for GM
Help Request Answers
1986 Buick Regal T-Type 3.8L Brake Light VIN: 1G4GK4778G
Thank you guys in advance for the help. Customer brought car in with a new master and pump assy. We installed it at his request. He said he was having a low break complaint. After installing the master assy, bake light was coming on intermittly. Found a recall...
1981 Cadillac DeVille 6.0L Cuts out VIN: 1G6AD6991B
This car belongs to my brother-in-law who is 800 miles away. The car dies when accelerating at anything over very light throttle. Also dies when cruising, and makes what he describes as a "duuuuuuh" noise. Sometimes swerving from side to side causes it to catc... Trouble codes: 23 (EST malfunction), 38 (MAT out of range)
1994 Cadillac Seville SLS 4.6L Hesitation, Stall, Misfire, MIL Lamp on VIN: 1G6KS52Y3R
This one started as a Code 73 that was intermittent. We daignosed as problem within PCM. We replaced PCM and all was fine for approx 1 day and then a different driveability problem developed.This problem was there all the time and turned out to be a problem wi...
1997 Cadillac Seville SLS 4.6L Surge, Cuts out, High Idle VIN: 1G6KS52Y8V
This one is giving me fits. I didn't get the problem with the high Idle to act up when I first road tested the vehicle and figured it must of had something to due with the P0603. Then after letting the vehicle sit for awhile it acted up. When you first start t...
1993 Chevrolet C1500 Cheyenne 5.7L Radio VIN: 2GTEC19KX0
Hi ladies and gents, came to us for a radio repair. The radio head has all functions ie. volume, balance station seek, remote cassette etc. Everything except sound from the speakers. All wiring that I can find is hooked up. Alldata has 3 systems available for ...
1994 Chevrolet Cavalier RS 2.2L Poor Idle Quality, Surge, unstable idle VIN: 1G1JC5447R
Help me guys and gals please. I am pulling my hair out. After doing a simple head gasket replacment and waterpump and thermostat the engine will surge/roll at idle in gear after driving at highway speeds. Turn the A/C on and idle up affect stops this problem, ...
1995 Chevrolet C3500 6.5L blown ecm fuse VIN: 1GBHK33F75
truck was towed in, no start, scanner wouldn't communicate, so i looked & found a blown ecm fuse, replaced it and the truck starts...we have communication now, no codes...dies 30 seconds later , blown fuse again. alternator was 'hot' after that 30 seconds of r...
1997 Chevrolet Monte Carlo LS 3.1L drivers window motor VIN: 2G1WW12M6V
Hello everyone, I am having a very hard time with this Monte. The express down on the drivers window switch only cancels one time when cold so if the customer does it more than once it will keep power at the window motor thus burning it out. If you hold the sw...
1997 Chevrolet Blazer 4.3L ignition key VIN: 1GNDT13W8V
This Blazer has a solenoid mounted near the ignition lock cylinder that keeps the cylinder from returning to the lock position when the solenoid doesn't work. Right now the solenoid does not work at all. I don't get power to either wire that goes to it. It has...
1999 Chevrolet S10 2.2L Hesitation, Low Power VIN: 1GCCS1443X
This is a vehicle that was passed down from another tech. It is very sluggish and feels almost as if it lacks fuel or has a plugged exhuast. Both of which I have checked. I have checked compression, all cylinders have 165 psi. I have diconnected exhaust and dr...
1995 Oldsmobile Silhouette 3.8L Misfire VIN: 1GHDU6L9RJ
van under load has bad miss. Cust has replace plugs with bosch platnum and we have scoped engine and found nothing. Scan data shows all sensors in parameters except shows voltage above what is on dvom at batt. @ 15.6 on scnner and 14.3 on batt. batt guage fluc...
1997 Oldsmobile Aurora 4.0L fans VIN: 1G3GR62C5V
customer had left cooling fan-thermostat-fan relays-coolant secsor repaced the cooling fans worked ok for week i scan system @ can turn on the fans with scan tool let car run engine temp at 220 only the left fan comes on LOW SPEED ONLY THE RIGHT FAN COMES ON W...
1968 Pontiac lemans 3.8L timing marks VIN: 237378B601
i have this 1968 lemans with a ohc 6 cyl. from one of my customers. it was his fathers toy which he used to play around with intil he passed away. we been asked to put the car back together for them so they can drive it. problem is dad replaced the head and di...
1999 Pontiac Grand Am SE 3.4L MIL Lamp on VIN: 2G1JML122X
please help!this ones a real bear. smoke tested all the lines.removed tank and smoke tested while on the ground.no leaks anywhere.all solenoids activate with scanner. Trouble codes: P0442
2000 Pontiac Grand Prix SE 3.1L Heater Core VIN: 1G2WK52J5Y
Leaking heater core. i am not sure how to even get it out. I have loosened many 7/32 screws to get a cover off according to all data. But i cannot get it out. I am in a bit of a bind. If you have any help please let me know. Thanks
2004 Pontiac GTO 5.7L battery VIN: 6G2VX12G74
We have done just about everything we can think except fix . Vehicle has intermittent battery draw . It will drain battery overnight . I have checked all bulletins as i work at pontiac store. Has anyone else seen or heard of anything that may help. It may be g...

Fixes & Summaries for GM
Fix/Summary Answers
2001 Buick Century Custom 3.1L Surge VIN: 2GHWB55K31
Well every reply nailed it, restricted exhaust. Special thanks to Jerry [...] for the info on the extended warranty coverage, we will be taking advantage of it. Paul.
1998 Cadillac Seville SLS 4.6L Head Gaskets VIN: 1G6KS54Y8W
I think we got this one taken care of. Cutomer took it back to the dealer where he bought it and worked out a deal to have them fix it. I think the best solution to the problem sounds like dropping the engine and trans out of the car, pulling the heads, and pu...
1997 Chevrolet C2500 Suburban LS 7.4L Misfire, MIL Lamp on VIN: 3GNGC26J3V
I am closing this help request without a fix as the customer has not returned with the Suburban for repairs. I received 13 replies on this help posting and fuel system,injector or pressure regulator was the #1 of the replies. Ignition system wires, cap, rotor ... Trouble codes: 305 (cly. 5 missfire).
1998 Chevrolet Lumina LTZ 3.8L Alternator VIN: 2G1WN52K0W
Thank you all for the speedy replies! All replies were of valid interest and were checked. The final outcome was in fact that the aftermarket rebuilder, (NAPA), did NOT distinguish between the 2 different voltage regulators, ( and don't in their catalog, nor s...
1998 Chevrolet Cavalier 2.2L Cuts out, Stall VIN: 1G1JC5249W
THX again for all the quick replies,,from injector resistance to harness rubbing .Even got a TSB number for this problem (73-64-06).First the injector resistance at 2.3 ohms was correct, I had the wrong info to begin with.(I also chked an injector on another a...
2003 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Stall VIN: 1GCEK19T33
Thank you to all who replied. Cleaning the throttle body and perorming the idle relearn procedure did the trick. Idle is correct. No more stalling. Thank you. Thank you. Thank you!!!
1997 GMC C1500 Sierra SL 5.7L Misfire VIN: 1GTEC19R4V
Hello Friends. I wish to thank the many people who took time out of thier buisy schedules to reply to my post, thanks to Kevin, Joe [...] Bros. garage, Jerry, Bill, James, Pete,and Mike. I didnot think a fuel probl...
1991 Pontiac Bonneville SE 3.8L interior door lights VIN: 1G24X53L5N
13 Replies with lots of ideas and thoughts, wish I can rember all the names. The laamp control module was keeping the dome lamps from coming on and off and killing the battery. I have ordered a new one From GM but there is none availabe right now. For the time...
2000 Pontiac Grand Am SE 2.4L suspension VIN: 1G2NF52TXY
thanks to those that replied it was the wheel bearings that were making the noise thanks again
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