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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 13, 2006
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Open Help Requests for GM
Help Request Answers
1993 Chevrolet K2500 Cheyenne 6.5L Upshift, Downshift, No Output Reading VIN: 1GCGK24F9P
OK welcome to a nightmare. 4 Mont hs ago this vehicle was in our shop. Transmission was cooked. So, we sent it to our rebuild facility (sublet). When we got it back everything was fine. Let the customer have the truck. The next day it came back with a 22 Code ...
1997 Chevrolet Astro 4.3L fuel gauge VIN: 1GCDM19W2V
this vehicle has a fuel gauge that pulses when you use the turn signals,emergency flashers,also gauge jumps when you shift into gear.as the flasher relay clicks,the gauge will go back and forth in rithym to the relay.have other same type vehicles that do the s...
1999 Chevrolet Express 3500 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy VIN: 1GTHG39R8X
after these repairs, no codes came back and vehicle had lots of power, ran well for 3 days, returned with no power and a code for bank 1 sensor 1 not switching, hooked up scanner ,vehicle immediately started running well, road tested, still running well, no co... Trouble codes: P1121, P0102, P0123, P0141, PP034, P0161
2000 Chevrolet C3500 5.7L fuel gauge VIN: 1GBJK34R1Y
If I unhook wire form computer to dash the gauge will go to full. If I unhook the wire from the balance module to the computer it stays on empty. When you first start the truck the fuel gauge starts to go up ( the tanks are full)to just about half and then dro...
2001 GMC Jimmy SLE 4.3L MIL Lamp on VIN: 1GKDT13W31
found blown fuse replaced it and code came back found blown fuse again replaced pump and fuse tested relay all working cleared the code and ran the vehicle code came back a week later no pump or relay problems could run pump with scan tool worked fine monitere... Trouble codes: P0410 (secondary air problem)
1993 Oldsmobile Bravada 4.3L No Start, Stall VIN: 1GHDT13W5P
car stalled in front of our shop pushed it in no fuel pressure checked power to pump no power,checked power to relay has power but has no 3 sec pulse at relay installed scaner no codes also no rpm signal o volts on battery voltage no fuel pump voltage the weie...
1992 Pontiac Grand Prix SE 3.4L timing belt VIN: 1G2WJ14XXN
Hey Guys, hope someone can help me out. Vehicle came in with a broken timing belt. Replaced belt but did not replace idlers yet. Found the idlers are worn out and started to chew away at the new belt. Disassembled again and installed both idlers and the tensio...
1996 Saturn SC2 1.9L No Start, Poor Idle Quality VIN: 1G82K5272T
This car came on the tow truck ;wit this plaint ses light on customer tell me that he lost power .I put the scanner and found the code p0340 The engine run only on cylinder 3and4 fuel spark compression timing are all ok i saw the rpm while cranking ,the ckp se... Trouble codes: P0340

Fixes & Summaries for GM
Fix/Summary Answers
2000 Cadillac Catera 3.0L Hesitation, Cuts out, Stall, Misfire VIN: W06VR54R8Y
Hi Guys, Thanks to all that responeded. The fix ended up being a bad Mass Air Flow sensor. Because of the erratic o2 readings we decided to unplug the sensor and drive it. It never acted up while it was unplugged. We replaced the sensor with no more problems...
1985 Chevrolet Corvette 5.7L No Start VIN: 1G1770789F
did the test with momentarilly touch purple and white wire.had brite noid light.replaced module to no avail.took sample of fuel and found water in it.drained tank.refilled with fresh gas.now runs fine.evidentally the gas was diluted just enough that carb clean...
1991 Chevrolet C1500 Cheyenne 4.3L Poor Idle Quality, Stall VIN: 1GCEC14Z3M
We finally had to jumper the park/neutral switch to keep it from stalling. We got 18 replies, and appreciate the input. Most had past problems with distributor magnets. This truck had a new dist in it. Thanks to all who replied. Steve
1993 Chevrolet Lumina 3.1L MIL Lamp on VIN: 2G1WL54TXP
Thanks for all the help it was a problem with my scanner. I changed cartriges and things were fine thanks again for all the help. Stanley,
1995 Chevrolet Blazer 4.3L engine VIN: 1GNDT13W1S
all the replies were very much appreciated but i do not know for sure if the condition still exists.we had the vehicle for only a day after receiving all the replies and we were not able to come to a difinitive conclusion.the only thing that i can ad is that w...
1997 Chevrolet Lumina 3.1L Misfire, MIL Lamp on VIN: 2G1WL52M3V
Thanks for everyones help. The fuel injectors fixed it, well its been out the door for more then a week without a complaint. We got the injectors from Lindertech.com. We did check all ignition things before also, I guess I did not mention that on the original ... Trouble codes: P0300.
1999 Chevrolet Silverado 2500 6.0L oil consumption VIN: 1GCGK29U1X
Thanks to all who replied. I'm hoping that the updated pcv valve with a fixed orafice will take care of the problem. The delco part # is CV4000C if anyone needs to know. Thanks to Dave from Ohio and Robert from Illonois for the heads up on the service bulletin...
1999 Chevrolet Venture 3.4L head gaskets VIN: 1GMDXO3V5X
this van is fixed and though the job of replacing the cylinder heads is pricier for the customer it is not bad for the tech as the intake is the hard part. the rear head was warped but not cracked which surprised the machine shop as they have seen many of thes...
2002 Chevrolet Avalanche 1500 5.3L Drive train VIN: 3GNEK13T02
Well the customer has had the vehicle for a week and phoned yesterday, all is well. After we got the diff back in and ran it in auto 4x4 for 1/2 hour test drive, at the 80 km mark if you really payed attentioin there was a little vibration almost like road noi...
2001 GMC Sierra 1500 HD SLE 6.0L drive line VIN: 2GTEK69U61
Well folks this is a fix. This truck is the C3 model that has full time 4x4, also called AWD...all wheel drive. It has no levers or buttons that allow the customer to select 2 or 4 wheel, nor does it have an actuator like the 'automatic' 4x4 vehicles. The tran...
1995 Pontiac Trans Sport 3.1L Poor Idle Quality, Stall, Misfire VIN: 1GMDU06D7S
Thanks to all that responded. We'll never know since the owners don't want to be 'inconvenienced' any more. I guess the vehicle stalling is not such an inconvenience. One person suggested the crank sensor which this vehicle doesn't have, however I wonder about...
1996 Pontiac Grand Am GT 2.4L Starting VIN: 1G2NW52T1T
i greatly appreciate all the replies to my help request.i did check out all of the suggestions i recieved but,still have not pinpointed problem.as soon as problem is found i will update with repair procedure.
1999 Pontiac Grand Prix SE 3.1L MIL Lamp on VIN: 1G2WJ52M4X
thanks for all the excellent replies, I was able to clean the egr passage way just as almost everyone suggested. I knew what i needed to do but you all gave me the best how to ways. thanks, the customer was happy she didnt have to replace the intake like the d... Trouble codes: P0401 (insuff egr flow).
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