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Prev Professional Automotive Repair Technical Discussions for August 2, 2006
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Open Help Requests for GM
Help Request Answers
1983 Buick Riviera 5.0L lock-up VIN: 1G4E25H687
hi fellow tech's.i've got this 83 riv. first of all vin is wrong.question for you trans guys.this buick goes into lock-up when hot and won't release until it cools down. even with tcc connector dis-connected.i checked fix data base and see some sticking soleno...
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1995 Buick LeSabre Limited 3.8L MIL Lamp on VIN: 1G4HR52L1S
Hi everyone i have a problem child here It has a code PO341 cam/crank error that resets within 10 seconds of starting this car , i ran the flow chart in mitchell on demand and it told me to test the cam signal termenal at the pcm for 5 volts ( dvom read 4.99 v... Trouble codes: P0341
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1995 Buick Riviera 3.8L battery VIN: 1G4GD221XS
Hello All, Have a 95 Riv with an intermmitent draw. Could happen one day or three days apart. Longest time so far is 3.5 weeks. I've swapped all relays one at a time and eliminated circuits one at a time by removing fuses. Now it's been two weeks and it happ...
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1999 Buick Regal LS 3.8L No Start VIN: 2G4WF5516Y
HELLO EVERYONE:i HAVE THIS 99 REGAL THAT WILL NOT CRANK OR START.WHEN YOU TURN THE KEY TO THE ON POSISTION ALL THE DASH LIGHTS AND FUEL AND TEMP GAUGE CYLCE ON AND OFF ALL THE TIME.IF YOU TURN ON THE HEADLIGHTS TO THE HEADLIGHT POSISTION IT QUITS CYLCING BUT I... Trouble codes: B3727, B0608, U1040, P571, C1245, C1277
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1993 Cadillac Fleetwood 5.7L warning lamp VIN: 1G6DW5274P
Hello all. I have this caddy in here with a oil change light on and I have tryed everything I can think of to get it out. I called our local dealer and they are not any help. I replaced a ignition module and serviced the car and the cust. would like the light ...
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1993 Cadillac DeVille 4.9L Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1G6CD53B8P
hi everyone, i need a little help again. this 93 cadillac sedan deville with 4.9 is giving me fits. vehicle came in on the hook with a no power complaint. upon closer inspection it did idle fair but had NO power, would miss every once in a while & backfires th...
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1994 Cadillac Eldorado 4.6L Poor Idle Quality
can the icm couse a fault in one coil and not effect the rest? thanks rich Trouble codes: P0135
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2000 Cadillac DeVille 4.6L Charging VIN: 1G6KD54Y5Y
hello techs, this caddy came with the battery light on, we found it was overcharging (15.2v). we put a reman remy alternator in it and it wont charge now. it has power from the pcm, the L terminal is switching, has 73% PMW through the scan tool and all the wir...
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1978 Chevrolet El Camino 3.8L steering VIN: 1W80A8Z480
This is for the frontenc shop that I use, All of the steering components have been tested and checked. The steering will not return to center from either direction, unless you turn the wheel back by hand. OK guys help me out and make me look good. Any ideas.
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1996 Chevrolet Astro 4.3L Poor Idle Quality, Misfire, MIL Lamp on
1996 4.3 misfire; Need more thoughts new udated data. this is in regards to a earlier help request still open. i hope this will help trigger some helpful thoughts from all you techs out there? since my last update i removed the upper plemum again and found the... Trouble codes: P0303 (misfire 3 cylinder)
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1997 Chevrolet C1500 Cheyenne 5.7L brakes VIN: 1GCEC19R2V
The above truck came in with a brake vibration and after coversing with another tech here, it isn't the only time. This truck has had the rotors and drums turned approx. 8 times now. I replaced the front rotors, test drove, and still a vibration/pulsation occu...
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1998 Chevrolet Malibu 2.4L Mechanical VIN: 1G1ND52T7W
Hi everyone and thanks for taking time to read this. This Malibu came in with a P0172-Bank 2 sensor indicates lean- and a P0401-EGR flow problem. I took the EGR valve off and there is plenty of vacuum but the exhaust has no flow at all. The passage is clear as...
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1999 Chevrolet Monte Carlo LS 3.1L compressor
The system is full of freon.I hooked up scanner and no codes. Went to function tests and under A/C relay test. I pushed ON and the compressor runs and a/c gets cold. Pushed OFF button and compressor shuts off.Remove scanner and comp inop.I found nothing in arc...
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2000 Chevrolet S10 2.2L 2nd, 4th, VIN: 1GCCS1958Y
Vehicle has no 2nd gear shifts 1-3 cannot feel 4th but can pull down into manual 3rd has 3rd then put in 4th and will shift to 4th lockup is working correctly converter clutch slippage and duty cycle are where they should be. Installed reman valve body, checke...
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1991 GMC TOPKICK 6.0L runs out of fuel
Got a medium duty truck with a 366 big block TBI with dual tanks, this is a recently purchased truck (used) so we do not know much about it. I have 2 questions: The vehicle ran out of fuel with a 1/4 tank showing on the gauge, I looked at the owners manual it ...
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1994 GMC C1500 Sierra SL 5.7L Hesitation, Surge, Cuts out VIN: 2GDEC19KR1
Customer has had this complaint for about a year. Truck came in with a code 13 in it. I cleared it and test drove, the code did not return. Truck runs good at idle and in open loop. The problem starts intermittently at cruising speeds. Fuel trim will be at 128...
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1988 Oldsmobile Cutlass Supreme 2.8L air conditioning
the A.C. compressor will not engage, the system has a full charge of freon. I can jump it at the ac relay, but other than that,the compressor will not engage when trying to turn it on inside the car. The light on the head control comes on, there is power to th...
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2000 Oldsmobile Intrigue GLS 3.5L MIL Lamp on VIN: 1G3WX52H7Y
Hi guys my name is Scott need some help if possible. Im using my coworkers IATN account he told me to try to see if you guys could help me figure something out. I have a 2000 Oldsmobile Intrigue V6 3.5L. Check engine light is on found code 410 (Secondary air i... Trouble codes: P0410
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2001 Pontiac Grand Am SE 3.4L Hesitation, Cuts out VIN: 1G2NF12E71
Have this Grand Am here. No codes. When you are sitting at idle and go to accel from a stop light or even back up slowly the car will hesitate or chug and die intermitantly. Even less often when your are driving it will act like you turned the key off for a sp...
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1993 Saturn SL2 1.9L MIL Lamp on VIN: 1G8ZK5570P
Hello Saturn experts. This one is stumping us. The vehicle came in with the MIL on, and codes 26, 32, and 81 in it. Called last shop it was at and said they replaced the computer for the QDM failure code 3 times, all with A1 Cardone units. Snap-On troubleshoot... Trouble codes: 26 (Quad driver module failure), 32 (EGR system problem), 81 (Info-Flag ABS message fault)
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Fixes & Summaries for GM
Fix/Summary Answers
1992 Buick Regal Custom 3.8L No Start, Stall VIN: 2G4WB54L3N
after checking the wiring harness and again checking and cleaning grounds could not prove crank,cam sensors bad module checked ok customer declined any further diagnostic time and said would drive till it completely quit
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1992 Buick Park Avenue 3.8L ABS light on VIN: 1G4CW53L6N
Well, thanks to a friend at a local GM dealer I was able to use a tech 1 that he had. It had no problems pulling codes. It had about 6 different codes and there was a tsb for a bad abs relay. Replaced the relay and all is good. I did not record the exact codes...
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1993 Buick Regal Custom 3.1L Misfire VIN: 2G4WB14TXP
Had many replies on this one and most of them said it was in the transmission and that it was a normal condition for that trans in that year so we explained it to the customer and they were satisfied. thanks again
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1994 Buick Park Avenue Ultra 3.8L Poor Idle Quality, Cuts out, Stall, MIL Lamp on VIN: 1G4CU521XR
Thanks to all who responded so quickly. The original reason for the ECM replacement was a bad EGR valve driver in the ECM. Also, CAM code was being set with a good signal back-probed at the ECM evidently it wasn't interpreting it correctly. Also, Tap testing o... Trouble codes: 101 (Mass Airflow Sensor Circuit).
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1998 Buick Skylark Custom 3.1L MIL Lamp on VIN: 1G4NJS2M8W
Thank you for all the replys. I am sure it is the a/c clutch drawing to many amps. we disconnected the clutch drove it for parts runs for a few days. gave the coustomr an est to fix it. do to the condition of the car and that he is leting his daughter use it h...
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1999 Buick Century Limited 3.1L svs,abs,traction off VIN: 2G4WY52M5X
thank you everyone for your replies. on second attempts to communicate with abs, we were unable to get communication. all powers andgrounds are present but customer wanted to take vehicle for a second opinion.
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1997 Cadillac DeVille 4.6L Unknown VIN: 1G6KD54Y7V
Thanks to all who replied. Not feeling to confidant with Mitchell's diagnostic tree we scoped the wires to the pcs. On initial start up we briefly had power then it would shut off followed by the mil light coming on. Replacing the ecu gave us a good waveform, ...
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1993 Chevrolet C1500 Cheyenne 5.7L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall VIN: 2GEC19H3P1
Thank you all who replied. The fix was replacing the injectors. This seems simple and obvious in now, but it really had me confused. Eric
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1999 Chevrolet Silverado 1500 4.8L ing switch VIN: 2GCEC19V8X
TRACED WIRE TO UNDER STEERING COLUMN.YELLOW HIRE HAD CHAFFED UNDER PLASTIC HOUSIND OF COLUMN,PROBABLLY DUE TO A IMPROperally RUN WIREING HARNESS AFTER INSTALLION Of A ignition switch..Fixed it... Thanks for yalls help
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1999 Chevrolet K2500 7.4L engine VIN: 1GCGK23J7X
the problem was a bad intake valve and guide on #5 cyl thanks much on the input.
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2000 Chevrolet Impala 3.4L Stall, MIL Lamp on VIN: 2G1WF52E6Y
thanks to Dennis from new Hempshire,Maynard from Ontario, Adam from Illinois and Allen from North Carolina. I replaced the 7x cranck sensor the one on the block that the icm uses for spark. after changing the new sensor, i read 24x data for 5 seconds and it wa... Trouble codes: P0336.
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1995 Pontiac Grand Am SE 3.1L general cooling system VIN: 1G2NE55M0S
I hope I am not repeating myself because I replyed with a summary before I hit close topic(I know,I know). But in a nutshell a updated cooling fan and relay took care of it1 This car only has a one speed single fan setup and mine appeared to function normally ...
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1997 Pontiac Grand Am GT 3.1L Hesitation, Poor Fuel Economy VIN: 1G2NW12M5V
This is ongoing-so far no fix. I am working on it on a spare time basis depending on when the vehicle is available. I am still thinking a seized torque converter stator. (nothin to do with the TCC), this works normally. Thanks to all.
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1999 Saturn SW2 1.9L Hesitation VIN: 1G8ZJ8275X
Hi well the firing order was the problem, 1 and 4 were swapped, did not think the car would run so smoothly like this. Should have checked when we found new plug wires have been installed!!! Thanks again for all the help.
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