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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 27, 2004
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Open Help Requests for GM
Help Request Answers
1985 Buick Regal 3.8L Poor Idle Quality, Hesitation, Stall VIN: 1G4GM47AOF
Hi everyone, got this pos buick in here that runs real bad hot or cold, but when I disconnect the 4 wire plug at the distributor this car runs well, I'm thinking that I've got a computer problem, checked with snap on scanner (no codes) all data no help. Lookin...
1990 Cadillac Seville 4.5L compressor VIN: 1G6KS533OL
customer brought the car in with no airconditioning cooling and the ac compressor off flashing on the information console inside the car. i evacuated the system and found it was low on freon (r12) checked for leaks and found o ring leaking at the reciever drie...
1996 Cadillac Fleetwood 5.7L p/s VIN: 1G6DW52P1T
I have spent the next two days trying to get it to make the noise again. Long story short, I determined if the AC was on, and the wheels were turned it would make the noise, but not consistently. I was able to see the p/s pulley slow down and almost stop when ...
1998 Cadillac DeVille 4.6L cylinder head gasket VIN: 1G6KD54Y8W
Howdy boys n girls, Got a new customer, dealer quoted 6k to fix his broiled caddy. We have him here now, and it has the classic cylinder head gasket/cracked head symptoms, combustion gas in the radiator and misses on start up. I have read many posts about stri...
1993 Chevrolet Lumina APV 3.8L No Start, Runs on carb clean VIN: 1GNDU06LPT
The only thing stopping this car from running is injector pulse. What have i missed? The only other wierd item is that my Mac Mentor scan tool does not return data/codes when plugged into the DLC.
1995 Chevrolet Tahoe 5.7L a/c VIN: 1GNEK13KOS
A/C Changes From Cold To Hot, Dash Controls Switch From Normal A/C Vents To Defrost+Heat. It Only Happens On Hills + Acceration . Works Ok At Idle + Steady Cruise On Road. Checked ALLDATA + Dealer On Help? Thanks,Colburn Brothers
1995 Chevrolet C1500 Suburban 5.7L pull to the left VIN: 1GNEC16K8S
this truck has a pull to the left under hard braking. when braking normally all is o.k.. we have installed new front calipers, pads, brake hoses, flushed out the entire brake system, tested master cylinder for pressure differance which is normal. the rear brak...
1997 Chevrolet C2500 Cheyenne 5.7L speed sensor signal VIN: 1GCFC29R2V
Thanks for reading this- hope someone has seen this before- this truck will intermittently (1-2 times a week) set c0036 & c0037 abs codes(rear speed sensor signal missing & signal erratic) and speedo inoperative and trans won't upshift- system passed MOD tests...
1997 Chevrolet Astro 4.3L Driveline VIN: 1GNDM19WVB
Hello. I have this '97 Astro that has been to the dealer several times for this complaint and the owner was told to live with the problem. I have spent quite a considerable amount of time on this vehicle and am now understanding why the GM Dealership told him ...
1998 Chevrolet Astro 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNDM19W5W
Vehicle came in with codes for lean cyl's bank 2, O2 voltage lean bank 2 and random missfire codes. Scanner shows O2 sensor switching on bank 2. Missfire counters show missfires on cylinders 2 4 & 6. Checking plugs revealed fuel fouled plugs on bank 2 and norm...
1998 Chevrolet K1500 Suburban 5.7L electric mirror
Greetings fellow techs! the electric dimming mirror is stuck on! this car came in with check engine light on, had a code p-0125b for "too long to go into closed loop", was 1-gallon low on antifreeze! problem fixed, cleared code. customer came back and said dri...
2000 Chevrolet Venture 3.4L temp guage VIN: 1GNDX03E5Y
van is used by local caterer, temp guage never went over 1/2, the other day in traffic it went almost into the red, running it in the shop overheat was varified,the cooling fans did come on at 225 degrees.we replaced the thermostat, the overheating is fixed bu...
2002 Chevrolet Cavalier LS 2.2L brakes VIN: 1G1JF52462
the rr wheel locks up with very miminal brake pedal pressure, then the abs system functions. there are no abs codes stored, all the speed sensors are at the same speed, the rear linings are good and dry
1989 GMC Safari 4.3L No Start VIN: 1GKDM15Z6L
Vehicle came in a couple of weeks ago with a no start problem, hit the fuel tank and it started so I sold a fuel pump job. The van ran with no problems for about two weeks and then returned with same problem. I stethescoped the fuel tank and the pump sounded l...
1997 Pontiac Sunfire SE 2.2L Hesitation, Surge, Misfire VIN: 1G2JB1241V
Attn GM techs. This 97 sunfire is wasting much of my time.This car originally came in for misfire under load. sprayed wires with mist of water and had breakdown of all wires. replaced plugs and wires. roadtest vehicle, had miss just not as severe. Had scanner ... Trouble codes: 300 (random cylinder misfire)
1997 Pontiac Firebird 3.8L brake lights
Hello all! this started out easy enough, coworker ask is I could replace his battery. Then he ask if I could replace his brake lights, as they had not worked before he let car set for about a year...now the rest of the story... The 3rd eye brake light works b...
1999 Pontiac Montana 3.4L Poor Idle Quality VIN: 1GMDX03E4X
has intermitant high idle (1300 to 1600 rpms) there are no codes and the TPS voltage is .48 moving a little to .46 but the TPS % is anywhere from .3% to 5.0% semes like idle will be high when at 5.0% if I turn key off and on it will come down to 3.1% and off a...

Fixes & Summaries for GM
Fix/Summary Answers
1996 Cadillac Seville SLS 4.6L input sensor VIN: 1G6K5294TU
Theodore [...] got this exactly . as did some others the shift selonoid was broken car still has code for input sensor but shifts Thanks TO all
1987 Chevrolet S10 2.8L brakes VIN: 1GCDT14R7H
I have went back and checked the rear wheel cylinders as suggested and they both worked fine. (not frozen) A good idea to check those next time. i cleaned and adjusted rear brakes and it helped to some extent. I checked the vac at the booster and realized that...
1990 Chevrolet Lumina 2.5L backfires VIN: 2G1WL54R8L
well you all will be glad to know this repair is now done . had some time to spend with vehicle after hours checked all possibilities for mechanical failure and after 3 hours of testing found no signs of damage present .this morning went back to basics and sta...
1995 Chevrolet Corvette 5.7L Cam/Distributor VIN: 1G1YY22P9S
Howdy, again: Thanks to Mark, Steve, Aldo, and Jerry for your information. The dist. appears to be the correct p/n, and I could not determine if there were any changes needed, so I just pulled a desperation move: I merely ground the bolts to a head thickness...
2000 Chevrolet Monte Carlo LS 3.4L Steering Wheel VIN: 2G1WW12E3Y
the fix was to get the lube from GM for the steering shaft. There is an updated steering shaft now available, next time I'll do this instead of the lube thanks again for the replies Gerry
2001 Chevrolet Tracker LT 2.5L Automatic Headlamps VIN: 2CNBJ63491
Sorry it took so long to close. We checked ground and for chaffed wires and found nothing. So we put everything together and the lights worked fine. The vehical has been gone for a weeks, with no news of malfunction.
1997 Geo Tracker 1.6L No Start VIN: 2CNBJ1361V
How many times have you heard this? 'When facing a difficult problem go back to the basics'. Thanks to everyone who offered help. Dennis from Virgina hit it on the head, plugged exhaust. I unbolted the exhaust at the manifold and it started right up. After rep...
1995 Oldsmobile Cutlass Supreme SL 3.1L 1-2 shift VIN: 1G3WH52M9S
Thanks to those of you that replied. The fix ended up being a replacement valve body. We were unable to find any noticable problem with the old one, but it works fine with the used one so all is well now. I have checked back with the customer after a week of d...
1997 Pontiac Grand Prix GT 3.8L Air Bag Module VIN: 1G2WP12K4V
Thank you for several very good suggestions. My main problem in removing the air bag module was that I was trying to move the studs that mount the module. The correct way is to move the heavy wire springs that the studs latch to. One of the best suggestions th...
1999 Pontiac Grand Prix GTP 3.8L MIL Lamp on VIN: 1G2WR5211X
we rechecked the wiring & grounds. all looked ok. we replaced the pcm & it fixed the problem(cam signal now present) - thanks for your help! Trouble codes: P0341.
1995 Saturn SL2 1.9L Excessive Emissions, Poor Fuel Economy VIN: 1G8ZK5273S
Thanks for all your help. The problem turned to be a pinhole in the vacuum line to the canister purge solenoid in back of the engine below the intake manifold. We also replaced the MAP sensor for insurance. Again, it is a pleasure and a comfort to know I am ...
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