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Prev Professional Automotive Repair Technical Discussions for November 27, 2007
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Open Help Requests for GM
Help Request Answers
1995 Buick Roadmaster 5.7L No Start, Cuts out VIN: 1G4BN52P6S
sorry this is so long but im just trying to give you all the info i can. i need some help on this one. it came in as a no start when it thad sat for the weekend. let it sit and it had spark out of coil but none out of cap. found crack a base of dist post. did ...
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1997 Buick LeSabre Limited 3.8L air bags VIN: 1G4HR52K3V
Originally disconnected air bags for elderly driver several years ago, no problem with system at that time. Now, reconnected bags and have air bag light on. Light flashes 7 times and stays on. DTC B1053. No Evidence of crash anywhere on car. Local GM dealer to...
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2001 Cadillac DeVille 4.6L Accessories VIN: 1G6KD54Y11
We have a very intermittent battery drain problem. We have caught it one time at 1.9 amps. With an amp probe we found it was related to the fuse panel under the rear seat. After removing all fuses and relays the draw was still there. We inspected the fuse bloc...
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1992 Chevrolet S10 Blazer Sport 4.3L Poor Idle Quality VIN: 1GNDT13Z2N
car act like loading up for first few minutes then runs fine we have tested and changed every sensor. watched scanner from start up , every value was right.it does not act like a ignition problem.fuel pressure is within range 11 psi.
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1999 Chevrolet Cavalier 2.2L Poor Idle Quality, Hesitation, Surge, Misfire, MIL Lamp on VIN: 1G1JF524X7
When vehicle first came in I scope tested found new plugs and wires(custumer installed.Went to injectors and scoped those with patterns.I replace coil pack with a known good one.I also replaced plugs and wires.I still have a random missfire at times and at oth... Trouble codes: P0300
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2001 Chevrolet Prizm 1.8L dlr, VIN: 1Y1SK52861
The bright light indicator flashes and the drl relay clicks. When the lights are on it does not do it. With the key on engine off it does not click either. We have replaced the multifunction switch, drl module and head light relay. Have checked what grounds we...
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2002 Chevrolet Silverado 2500 HD 6.6L engine VIN: 1GCHC23172
This truck has exceptional blowby and oil use coming from the pcv vent tube at the right front of the engine which comes from the pcv tubes from each valve cover. Oil has covered the chassis. I have not found any tsb,s on this and the engine runs great, no wea...
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2002 Chevrolet Express 2500 5.7L ABS Module VIN: 1GCGG29R92
ABS light is on but will not communicate with 3 different scanners. All powers and grounds are good at ABS Module. ABS Modules common on this?
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2002 Chevrolet Silverado 1500 HD LS 6.0L brakes??? VIN: 1GCGK13U62
Customer complains of vehicle pull to Right, intermittnetly. Condition reported as very random, after hitting a bump, turning a corner, braking. Customer description is during Summer squeaking noise can be heard in RF with window down, not noted in winter mont...
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2002 Chevrolet Cavalier 2.2L Radio VIN: 1G1JC12482
Thanks for your help in advance. The LOC light is on in the radio. This is kind of a basic radio with a CD. Does anyone have a way to unlock it? I have an OTC scanner and looked in the body module but I find nothing regarding the radio. I have looked in the ...
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2003 Chevrolet Impala LS 3.8L security lamp VIN: 2G1WH52K03
hello i have an 03 impala with an intermittent security light, that comes on while driving about 30 minutes. checked for codes with tech2 found none. with light on checked security light status with tech2, it shows the lamp to not be on. has remote start that ...
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2003 Chevrolet Trailblazer North Face 4.2L rear wiper VIN: 1GNDT13S93
Rear wiper inop.check all fuses,ok .have power up to the circiut breaker, but no Batt+ power to the wiper motor @the orange wire and no singnal at the green wire @ motor.the wire schematic is really not helping.this has a lift gate module but we dont have tech...
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2005 Chevrolet Express 3500 6.0L No Start, MIL Lamp on VIN: 1GCHG35U75
hello again i have another alligator here customer towed in no start changed crank sensor per code now i have crank signal , still noo start pops back through intake like it is out of time ran compression test have only 35 psi on # 6 cyl but i think it should ... Trouble codes: P0336
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2005 Chevrolet Astro 4.3L 3rd gear VIN: 1GCDM19X05
Hello everybody, I have an '05 astro van, 4 speed(o/d) with no 3rd gear at all and no codes present or pending. With Modis can scan values and indicates vehicle shifts from 2 to 3 but 3rd is just another neutral at this point. can rev engine until it shifts to...
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2006 Chevrolet Impala LT 3.5L MIL Lamp on VIN: 2G1WT58K36
Car came shifing hard with the check engine light on. It had a PO171 lean code. The long term fuel trim was fixed at 19.5%. The MAF sensor would change is reading at idle intermittently. The car would also reset the lean code within a couple minutes. I have ne... Trouble codes: P0171
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1999 GMC Jimmy SL 4.3L No Start VIN: 1GKDT13W8X
This is a fuel problem for shure, Customer says if you dump a little fuel in the throttle plate it will start and run all day and restart ok throughout the day, He's right. But won't start on its own cold. Fuel preshure is as follows, Key on 55-60, but crank a... Trouble codes: N0NE
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1995 Pontiac Grand Am SE 3.1L Temp Guage VIN: 1G2NE15M9S
Having engine temp problem from initial start up. Customer starts unit and drives 15 miles to work and temp guage goes into the red and then comes down to normal if he turns it off and restarts it. Kinda like the thermostat opens finaly. This started a few wee...
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Fixes & Summaries for GM
Fix/Summary Answers
1994 Buick LeSabre Custom 3.8L transmission VIN: 1G4HR5219R
I have reviewed lots of info on this car.The customer has not returned with the car to cont diag.But thanks too all that emailed me with help.
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1994 Chevrolet C1500 Cheyenne 5.7L MIL Lamp on VIN: 1GCDC14Z4R
Thanks to all that replied. some of you hit the issue on the nose. I feel like an idiot for making such a dumb oversight but I can have an off day/days once in a while i guess. At any rate, the problem was the PCM o2 sensor ground at Pin A12. This ground... Trouble codes: 13 (o2 circut problem).
13
1996 Chevrolet Express 3500 5.7L No Start, Poor Idle Quality, Cuts out, Stall, 40,000 IAC COUNTS VIN: 1GCGG35K0T
HELLO AGAIN WE FIXED WITH A FUEL PUMP RUNS GREAT BUT STILL DONT UNDERSTAND THE HIGH IAC COUNT STILL COUNTING UP TO 2000 COUNTS ANY WAY CUSTOMER IS OK WITH IT AND NNEDS IT SO TILL NEXT TIME , THANKS FOR YOUR HELP
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1997 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire VIN: 1GNDM19W8V
Thanks for all the support, the main fix was the crank sensor, tried a new aftermarket and didn't even want to start, got an oem one and that was it!!! Also needed egr due to stuck valve in carbon and distributor had worn gear so replaced it too. Techs pointed...
7
1997 Chevrolet Venture 3.4L Speedometer VIN: 1GNDX06E7V
This vehicle belongs to my brother and he lives about 3 hours away so it is hard to get the vehicle here to work on it plus I was gone on a trip for a week or so but the replies were good thank you very much. The one that I think has the most potential of bene...
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1998 Chevrolet Astro 4.3L abs VIN: 1GNEL19W7W
Thanks for all the help. I preformed all the tests that were suggested. we found no RF signal from the alternator. The vss was working ok.we tested the grounds and cleaned them. still with no results. We have concluded the controll unit is bad.The customer has...
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1998 Chevrolet C3500 Cheyenne 6.5L Heater VIN: 1GBKC34F2W
Thanks to everyone who replied! The problem was the low pressure switch shorted out.
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1999 Chevrolet Lumina 3.1L MIL Lamp on VIN: 2G1WL52M3X
This one is fixed. Everybody was right, the egr passage was plugged, I should have known to check it...exact same problem as all of the 4.6 & 5.4 ford v8's have...thanks for the help. You folks are the best! Trouble codes: P0401 (egr insufficient flow detected).
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2001 Chevrolet Silverado 3500 8.1L Stall VIN: 1GCJK39G71
Thanks to all for the great responses. It was the crank sensor. The light was just by fluke, it stalled a few times without the light. Rod
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2002 Chevrolet Monte Carlo SS 3.8L keyless entry VIN: 2G1WX15K82
Thanks to all that replied. Special thanks to Jeff and Mark who wrote: Transmitter Programming Important: All transmitters which are to be recognized by the remote control door lock receiver (RCDLR) must be programmed in a single programming sequence. If the ...
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2005 Chevrolet Impala 3.4L No Start, without foot on gas VIN: 2G1WF52E95
Sorry for the delay on this fix. My opportunities overcome me at times! Thanks to all that replied. A few of you nailed it. The IAC was the problem. Although I didn't see anything really wrong with the readings I was getting, enough of you said to replace it a...
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1998 Oldsmobile Aurora 4.0L dash lights VIN: 1G3GR62C3W
I haven't got the aurora back to work on it.3 replies possible multifunction switch.there is a module, good suspect and connections,and possible cluster problems.Due to the exspence of the repair they have decided to wait until after the first of the year. Th...
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1997 Pontiac Grand Am GT 3.1L no power VIN: 1G2NW52M8V
THANKS FOR THE HELP GUYS, TURNS OUT THE KNOCK SENSOR WAS RETARDING THE TIMING, BUT THE MAJOR ISSUE WAS THAT THE ENGINE IS GONE
12
2002 Saturn L200 2.2L Starting VIN: 1G8JU54F22
Thanks to all that responded. A new BCM resolved the no start problem but the most difficul part was getting the local Saturn Dealer to flash it. I can't understand why they almost always have to act like the enemy. A little reminder on how much we spend in pa...
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