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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 23, 2007
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Open Help Requests for GM
Help Request Answers
2002 Buick Rendezvous CXL 3.4L Interior lighting, radio,pwr windows,locks,gauges VIN: 3E5DA03E32
Vehicle came in Security, check engine lights on. Power windows, locks, dash lights, radio, sunroof are all inop. Replaced blown fuse for ALDL. Check DTC's. Replaced ignition switch, which did repair some other issues. Still interior items not working, but sin...
2004 Buick Rendezvous CX 3.4L tpms VIN: 3G5DB03EX4
Hi Guy's And Girl's , Thanks in advance for any help on this. Tire pressure monitor light is on and when I hook up scanner (Snap On 2500) it tells me that the vehicle is not equiped with tpms. I bought a Tech 300 Wheelrite tool a while ago and this is the 1st ...
1985 Cadillac DeVille 4.1L Surge, MIL Lamp on, Communications VIN: 1G6CD4787F
All Caddy techs, This is a curious problem. Vehicle will run, and start well, good accel., cruise, etc. The Service Now light is on, and another telltale, "Service Electrical System" is also on constantly. Have not been able to find any info on this telltale, ... Trouble codes: F32 (BCM/PCM Communication circuit problem)
1993 Cadillac DeVille 4.9L hvac VIN: 1G6CD53B9P
This vehicle came in already retrofitted. Dead compressor. I replaced compressor,dryer,condensor,orfice tube,andflushed what was left. It cools fine at idle and reving the engine. But going down the road it warms up after giving it just a little gas. Any ideas...
1998 Cadillac Seville STS 4.6L theft deterent VIN: 1G6KY5492W
been rackin my brain on this one, and mostly cause of lack of info. this cadi has a service theft system light on and security light on dash lit all the time. all of our scanners would not read vtd mod. so after finnaly finding the sequence in iatn to read cod...
1998 Cadillac DeVille 4.6L instrument cluster VIN: 1G6KD54Y4W
Vehicle had no instrument cluster display. With old cluster vehicle started and ran fine. Replaced the cluster with a used one and performed the Instrument Cluster Relearn procedure. Key on for 10 minutes turn off and repeat key on for 10 minutes 2 more times....
2000 Cadillac DeVille 4.6L oil level light VIN: 1G6KD54Y1Y
I'm leaning towards a pcm on this but want to make sure. This Caddy has a low oil level light that comes on anytime the key is on. The scan tool says oil level is ok. unplug and scan tool says low, like it should. Alldata says supposed to have 5volts at connne...
1988 Chevrolet Corvette 35th Anniversary Edition 5.7L starting circuit, fuel curcuit VIN: 1G1YY3183J
First thing i found was a no crank issue, resistance tested the key pellet first, checked good, started tracing signal to vat relay then the mess was found behind dash, RATS... nests and chewed wiring everywhere, apparently they liked to use VAT module as a to...
1989 Chevrolet G20 Chevy Van 5.7L fuel circuit VIN: 1GCEG25K2K
Hey fellas, I don't know if Iv'e been out in the heat too long, or what. I can't seem to figure out why this cargo van keeps popping the fuel pump fuse. The only thing that gives me hope of fixing it is that I can cycle the key off and on as many times as I li...
2000 Chevrolet K3500 5.7L No Start, Hesitation VIN: 1GBJK34R3Y
2000 K3500 originally towed in and tested for very low fuel pressure (10 psi). Replaced the fuel pump, vehicle started and tested for 60 psi. Customer leaves the shop, and the vehicle dies later on that day. Towed back and tested 46 psi fuel pressure, no start...
2001 Chevrolet Impala 3.4L current draw VIN: 2G1WF52E61
have done all i know and still have 1.5 amp draw.no lights or bulbs on. will run battery down over night. not the most common things,any ideas,keith
2003 Chevrolet Cavalier 2.2L windshield wipers VIN: 1G1JC52F23
Hello, problem is when the left turn signal is applied the wipers come on sometimes they pulse only once and other times they run as long as the left turn signal is on. I have replaced the pulse board inside the wiper motor and added a redundant ground it did ...
1995 GMC K1500 Sierra SL 5.7L stalling when warm VIN: 1GTEK14K9S
This vehicle was brought over to me. Once it warms up the idle seems to pick up and then it stalls. I notice once the idle picks up the fuel trim goes down to 88 then stalls. It puts a code 33 which is a map sensor code which is high. Tried another map sensor,...
2002 GMC Sierra 1500 HD SLE 6.0L steering VIN: 2GFTFK69U6
Thanks in advance. This is a quadrasteer and customer is complaining of an clunking noise from the right rear only when the quadrasteer is on. i have heard the noise and and it is a intermittant clunging noise when you make a sharper turn to the right in forwa...
2004 GMC Envoy SLE 4.2L MIL Lamp on VIN: 1GKES12S94
hello techs,thanks in advance for taking your time! i have this 04 envoy 4.2 l6,has misfire at idle. does not misfire at higher rpm. customer came from dealer and dealer said cylinder head has to be replaced due to bad valve spring on number 5. i have done som... Trouble codes: P0305 (cylinder 5 misfire detected), P1680 (driver 5)
1986 Oldsmobile Cutlass Ciera LS 2.8L Cuts out, Stall VIN: 1G3AM37X4G
Customer states the engine stalls while driving. I was able to duplicate the concern in the way. Let the vehicle sit at idle and it will stall. It will crank back up and run again no problem until it decides to stall out again. The service engine soon light wa...
2002 Oldsmobile Alero GX 2.2L Mechanical VIN: 1G3NK52FX2
noisy timing chain. whats the timing marks, alldata shows colored chain links at 5,2&10 oclock mabye its obvious but how do you get things exact without at least one mark to line up with another to start with. so please some detailed info on how to line this t...
1986 Pontiac Fiero SE 2.8L Poor Idle Quality, Stall VIN: 1G2PF3791G
Hello fellow Techs. I hope there is a Fiero guru that may be able to help me out. Customer brought the vehicle in for a tune up. One of our techs did a set of plugs, cap, rotor and wires to it. Vehicle came back in about a week with the complaint of extended c...
1998 Pontiac Grand Prix SE 3.8L horn VIN: 1G2WJ52K5W
i have replaced 3 relays in this car for the horn. after a few months the horn will not work again. replace the relay and horn works. testing the old relay=good. am i overlooking something common? i can not see a problem in the relay box. this time i removed/r...

Fixes & Summaries for GM
Fix/Summary Answers
2001 Buick Regal LS 3.8L cruise control VIN: 2BGW5446L1
6 replies in less than 2 hours that is awesome!! everyone said it was a very good possibity that the multifunction switch was bad causing no cruise control operation, replaced it with a o.e.m. switch and the cruise works great. thanks for the help i.a.t.n. is ...
2002 Buick Century Custom 3.1L MIL Lamp on
Well im am going to call this fixed but not totally sure what had repaired it. Burning Dex-cool from failing head gaskets or the replaced post cat o2 can be the only two things that repaired this vehicle. The customer had opt to take vehicle and drive periodic... Trouble codes: P0420 (Catylitic convertor efficiency).
1984 Cadillac Fleetwood Brougham 4.1L No Start, VAPOR LOCK VIN: 1G6AW6988E
Many thanks to the 8 techs who offered help. In the replies it was suggested several times that the fuel pump check valve or pulsator could be allowing bleed off of pressure. Also mentioned was the regulator as a possible culprit. air entering system at puls...
1997 Cadillac Catera 3.0L Oversteer VIN: W06VR52R7V
Hello all, About half of you got it, maybe you'd seen it before? The inner and outer tie rods were installed reversed. The short straight threaded tie rod is the INNER tie rod, but was installed as the outer. The longer one with the curve in it is the OU...
1992 Chevrolet K1500 Cheyenne 5.7L No Start VIN: 1GCEK14KBN
Thanks to all that responded. I checked the tps and sure enough it was the problem as most of you said. Disconnected it and it fired right up. I replaced it and truck did great. Once again thanks for all the replies. Duke
1994 Chevrolet G30 Chevy Van 5.7L power steering pump VIN: 1GBJG31KXR
sorry it took so long to reply, we have been slamed with no-starts, and drivability problems! all of you helped get my head screwed on strait! one of made an excellent suggestion and that was to by pass the hydraulic booster and see what happened. well our pr...
1998 Chevrolet Camaro 3.8L Engine Removal VIN: 2G1FP22K7W
I received numerous replies on this, half of which said to take it out the top and the other half said take it out the bottom. I decided to take it out and install it through the top. I hooked a chain up to only the front of the engine, and placed a floor ja...
1999 Chevrolet Tahoe LS 5.7L Misfire, Loss of power VIN: 1GNEK13RXX
I would like to thank all for the great suggestions. A special thanks to Steve,Leonard,Brad,Bradley and Todd. You all hit the nail on the head. We removed the heads and sent them to the machine shop. All the exhaust valves guides were too tight. I just finishe... Trouble codes: P0300 (Random misfire).
2000 Chevrolet C2500 5.7L Stall VIN: 1GCGC24R1Y
2000 Chevrolet S10 2.2L Hesitation VIN: 1GCCS1457Y
thanks to all who helped,tyler from kansas hit it right on the nose. cheap fuel filter was the problem. a wix filter brought fuel pressure back.thanks again to all who helped mike
2002 Chevrolet Monte Carlo SS 3.8L door locks VIN: 2G1WX15K72
Tested all power & ground supplies to related circuitry - passed. Removed BCM. Loaded all circuitries turning items on/off. Then tapped on BCM & each time BCM was tapped the security light flashed. Replaced & reprogrammed BCM which repaired all symptoms.
2003 Chevrolet Tahoe LT 5.3L drivers seat VIN: 1GNEK13Z63
well this one is fixed rechecked power to the door control module and was not all there checked circut breaker and it was stuck replace and everythig working well
1997 GMC Safari SLE 4.3L MIL Lamp on VIN: 1GKDM19W8V
Replaced the fuel pressure regulator. Thanks for all the responses and ideas. Returned vehicle to customer and they are happy. Trouble codes: P0420.
1991 Oldsmobile Cutlass Supreme 3.1L Excessive Emissions, Poor Idle Quality, Surge, Stall, Misfire VIN: 1G3WH14T8M
First off, thanks to all. Like most had said, there was one faulty injector in the rear bank causing probably most of the problem. Taking everyones thoughts and changing the IAC and cleaning the TBI and replacing the #3 injector, It couldn't run any better. Ag...
1995 Oldsmobile Aurora 4.0L Surge, Stall VIN: 1G3GR62CO5
Hey all! Thanks for all the info everyone provided. The car still isn't quite right, but better than it was to start with. We found numerous problems with the car. The EGR was throwing a code - replaced with a new one - still threw a code, so we tried another ... Trouble codes: 22 (TPS Circuit Open), 30 (Idle Speed Control Actuator Slow or Inop), 56 (Turbine Shaft Speed Sensor Circuit), 70 (Intermittent TPS Signal), 73 (Intermittent Engine Coolant Temp Sensor), 95 (Engine Stall Detected).
2003 Oldsmobile Alero GL 3.4L Extended Crank VIN: 1G3NL52EX3
Thanks to all of the replies. sometimes when you have problems you tend to put the blinders on and only delay the repair. this whole problem started with a new fuel pump. after installation the car had a miss. after diagnosing the miss we found injectors tha...
1989 Pontiac Grand Prix SE 2.8L No Start VIN: 1G2WP14W1K
I still have not fixed car all the information I got was stuff that I checked in the begining. I have ran out of time on this one and will get back to it. As soon as I fix it i will post a fix. thank you for all of your time.
2003 Pontiac Grand Prix SE 3.1L Blower Motor & DRL VIN: 1G2WK52JX3
Thanks to all for taking time out of you busy to reply to my help request. Root cause was a faulty ignition switch assembly. Also blower resistor was proven faulty, most likley side effect of faulty ign switch. This was a really weird one. With a test light...
2002 Saturn L200 2.2L ignition lock and power windows VIN: 1G8JU54F22
well i can't take the credit for fixing it because i didn't get to look at the car again. the customer did not wait until we could look at the car. instead she went to the dealer. they found the wires for the power window switch and switch for the shift interl...
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