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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 9, 2006
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Open Help Requests for GM
Help Request Answers
2000 Cadillac Catera 3.0L Alternator VIN: WO6VR54R6Y
This Cadillac Catera charging system is causing us trouble. We have replaced the alternator 3 times so far and now it is back in not charging again. We have always used AC Delco reman alternators. This is in about 3 months time. The last one lasted about 5 wee...
1988 Chevrolet Caprice 5.0L MIL Lamp on VIN: 1G1BN51H5J
Hi Guys, We have a strange one here. We inherited this car after the dealer could not repair it. After a short period of driving the car, it will, under just the right load conditions, give a slight "burst" of spark knock for approx. 1 second, turn on the CEL... Trouble codes: 43 (ESC Voltage Low To ECM)
1993 Chevrolet Corvette 40th Anniversary Edition 5.7L No Start VIN: 1G1YY23P6P
Thanks for the help on this one. Vehicle was purchased from car auction. Initially would start but emediatly stall. Now it will not start at all. Now when I test the basics, I get one flash only from spark tester and noid light when you first crank the engine....
1996 Chevrolet S10 LS 2.2L ac VIN: 1GCCS1949T
Hi, thanks for reading my post. The ac system freezes up. Customer states that after driving down highway for maybe 20 miles the ac will get warm. He stopped and opened hood and low side line from evaporator to accumulator was frozen up solid. after it melted ...
1999 Chevrolet Malibu LS 3.1L multiple VIN: 1G1NE52J0X
how come this stuff ends up here?thinking of changing the name to "end of the line auto".well here is the sad story of woe.customer brings car in with abs light on was told that it needed front wheel bearings,did not help so the shop reccomended me(thanks).car...
2002 Chevrolet Cavalier 2.2L Poor Idle Quality, Surge, Stall, MIL Lamp on VIN: 1G1JC12482
engine dies out cold. gets better when warmed up. the evap code is not affecting this issue. the p1171 is because it is running lean. the fuel pressure is normal according to spec. there is no engine running spec. that i can find. fuel pressure appears to be o... Trouble codes: P0440 (evap system leak), P1171 (lean condition during power enrichment), P0171 (system lean bank 1)
2002 Chevrolet Suburban 1500 LS 5.3L lifters VIN: 1GNF16Z72J
we istalled new gm lifters and did soak them over night before installing.push rod ends all looked good, no bent rods.
2004 Chevrolet Classic 2.2L ABS Module VIN: 1G1ND52F24
Pedal drops when firmly braking from 45-50 mph down -feels like abs is holding pressure and then releasing it- both rear inlet valves are activated when problem occurs- no pump motor running when it happens- does not appear to be a false activation- Braking pe...
1989 GMC K2500 Sierra SLE 6.2L Radiatior VIN: 2GTGK29J7K
I am a Saab Dealer tech, so I don't have a whole lot of experience on these cars. I am helping out a fellow scouter. He has done the work so far and has asked me for advice. I looked over the work he has done and see no problem with the work. He had a small ...
1998 GMC Safari SL 4.3L No Start, Cuts out, Stall VIN: 1GTDM19WB5
Hi Men, This is a catering van with low mileage. Well maintained. Customer called w/van stalled on freeway? called for tow but customer restarted van and drove in. Next day on road test van stalls just out of parking spot, and is tough restart. Stalls 3 more t...
1990 Oldsmobile Toronado 3.8L No Start VIN: 1G3EV13C81
Said vehicle will not start after it has been running for more than a few minutes INTERMITENTLY. If you crank the engine after it has been running, 25 percent chance it will start. If while not starting, release the key and try again, it has a 25 percent chanc...
1998 Oldsmobile Silhouette GS 3.4L srs VIN: 1GHDU03E3W
Please help! I am posting this for my boss. He got this van from a nursing home because it had a blown engine. This van had alot of handicapp stuff in it and he removed all of it. The problem is that he keeps getting a code b1025 driver deployment loop short t...
1998 Oldsmobile Aurora 4.0L No Start, irratic systems VIN: 1G3GR62CXW
Tach jumps around all the time. Speedometer will start to jump and eventually will peg at 160mph while driving 40mph. when this happens, the a/c cuts out, the rest of the dash gauges go to their rest position, traction control light comes on, and a few other o... Trouble codes: P0603, P1602, P1603, P1604, P1605
1989 Other GM capri 3.0L No Start VIN: BL3C38CXK9
I hope some one can help me with this boat, it will not start. at time it will back fire, or run for a second. most of the time it has no spark. the boat has a dis waste spark system called delco digital ignition system, tested for triger to coil and found non...
1998 Pontiac Grand Am SE 3.1L battery VIN: 1G2NW52MOV
just to be honest, charging systems and i have never got along. we installed a motor for this customer several months ago. since hot weather she has a problem with her charging system./ after extended drives battery is dead will not crank( sometimes), charge l...
2001 Pontiac Grand Am SE 3.4L fuel pump VIN: 1G2NF52EX1
This car has an intermittent problem with the fuel pump not running at start up. Customer complained of a long crank time at first and we found and replaced a weak fuel pump and the regulator. The regulator was leaking gas internally. She drove the car for a w...
1998 Saturn SL 1.9L Starting VIN: 1G87F5285W
this vehicle is dumping excessive fuel causing it to flood and not start or rough start. can start when throttle is open. have changed fuel filter/pressure regulator, have checked canister purge solenoid(can't see or smell leak or excessive fuel),have checked ...

Fixes & Summaries for GM
Fix/Summary Answers
1991 Buick Park Avenue 3.8L Starter VIN: 1G4CW5318M
Sorry I was able to close with a fix. We've had the car 3 weeks and have not been able to duplicate the problem. Hard to fix if it won't act up. Most every one suggested the lock cylinder and key. We replaced this two months ago and it made no difference. Had ...
1995 Buick Riviera 3.8L battery VIN: 1G4GD221XS
It was infact the height sensor causing the problem. It had to be at just the right height to cause the draw, that's why it was so intermittent. Thanks to all those who took the time to respond.
2001 Buick Century Custom 3.1L headlights VIN: 2G4WS52J01
i moved the harness away from the a/c accumulater, we have not heard from the customer so I assume that mosture from the accumulater was cousing a voltage bleed in the harness
1995 Cadillac DeVille 4.9L theft deterent VIN: 1G6KD52B9S
the alarm system was fine one of the bolts that hold the air bag was not threading in all the way and was keeping the horn relay grounded; thanks for the help
1998 Cadillac Catera 3.0L air bag VIN: W06VR52R2W
thankyou jaime,bob and terry for your help on this vehicle. i refered the customer to another fellow shop owner who had the tech 2.i just received a call from the shop/customer and he said that clearing the computer cleared the air bag code .
1996 Chevrolet Astro 4.3L Poor Idle Quality, Misfire, MIL Lamp on
the customer wanted to pass smog mainly, but the check engine light would not stay off long enough. so i tweaked with the idle adjustment a little filled the tank with premium gasoline and ran two bottles of upper intake cleaner through a drip bottle and vacuu... Trouble codes: P0303 (misfire 3 cylinder).
1998 Chevrolet Blazer 4.3L ecc VIN: 1GNCS13W3W
I would like to say I fixed this but unfortunately it took our lead tech to solve the problem. While your input was valuable, it was an installation error on my part that caused the misdiagnosis. The actuator was the problem with this vehicle. Different from o...
1999 Chevrolet K1500 Suburban 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Misfire, MIL Lamp on VIN: 3GNFK16R8X
Thanks to all for your help specialy to Kent from Fl. and Bob from Mi. I decide to recheck my valve adjustment with engine running(I cut a old valve cover to avoid oil mess) and with my scanner on misfire data while i losing adjusting nut misfire goes away, I ... Trouble codes: P0300 (random misfire).
2000 Chevrolet C2500 5.7L won't run monitors VIN: 1GCGC24R0Y
Thanks to those who replied. Took into consideration the the monitors won't run unless vehicle temp is at opperating temp and that closed loop is achieved. I took the Tech 2 and went intothe cng portion of the data scan. Temp was a little slow in rising and cl...
2000 Pontiac Grand Prix GT 3.8L MIL Lamp on VIN: 1G2WP52K5Y
Thanks to all who replied regarding the above vehicle. This car has a dual purpose sensor that sends information to both the PCM and the dash mounted temperature gauge. I suppose that since both the gauge and PCM data are incorrect that I must have a ground ci... Trouble codes: P0128.
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