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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 3, 2006
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Open Help Requests for GM
Help Request Answers
1989 Cadillac Eldorado 4.5L ignition VIN: 1G6EL1159K
we were atemting to reset the oil change time and some how dissabled the ignition system says dissabled because of security system. Cad. says thats imposible that there is a problem with the ignition tumbler or pass key system. I have checked the ohms on the k...
2002 Cadillac DeVille 4.6L Misfire, MIL Lamp on VIN: 1G6KD54Y22
I think I have another regular customer here, cause she came today late (like the last time) and requested me to fix the vehicle.Last visit was July 25th for AC blower, now the complaint was idle rough and no power. Code P0300: Random Misfire; I've ran some te... Trouble codes: P0301 (Cylinder i Misfire)
1988 Chevrolet C1500 Cheyenne 5.0L Hesitation VIN: 2GCDC14H3J
hello, i am dealing with a reoccuring problem . just a tidbit...originally this problem was on a 1991 suburban with a 5.7 liter. the vehicle was rotted severly and my cust. purchased this pick up with a blown 5.0 liter for cheap. so i swapped it and the 88 pic...
1989 Chevrolet Camaro Iroc-Z 5.7L Cuts out VIN: 1G1FP2189K
HI guys I have a 1989 IROC camaro,motor was rebuilt (by a reputable shop) with a one cam better than stock and headers,the car intermittantly starts and quits, its unaffected by temp, one day it will start and run A1, and be ok for days then all of a sudden it...
1995 Chevrolet S10 4.3L ABS and Brake Lamps VIN: 1GCCS14W7R
Vehicle came in for complaint of brake lamp coming on. On test drive I found that when you lift off gas after accelerating briskly the ABS lamp comes on and about 2 seconds later the brake lamp comes on, wait a couple of seconds and they go out in the same seq...
2000 Chevrolet Cavalier Z24 2.4L ABS module VIN: 1G1JF12TXY
i have a bad boy problem child.. i cant get any communication with the ebcm module. i have a abs light on a brake light on . the dash gauges ie: fuel,speedo,radio turns on and off volts will go back and forth the headlights will come on when the cooling fan go...
2001 Chevrolet Cavalier LS 2.2L Brake light fuse VIN: 1G1JF52461
Vehicle came in with no turn signals. Found the 20 amp mini fuse powering the brake lights/ hazards and the cig lighter were both missing. Installed new fuses and ran several test signal runs, everything checked out OK. At that time the clip holding the brake ...
2002 Chevrolet Tahoe LS 5.3L p/s pump VIN: 1GNEK13Z62
vehicle came to shop with no power steering , found shaft on pump broken . replaced pump with new pump from dealer .delco part #[...] . transfered old evo unit to new pump . power steering works fine off idle . at idle very stiff , turning left only . no dt...
2003 Chevrolet Malibu 3.1L MIL Lamp on VIN: 1G1CFCHGVH
Following mitchell ondemand flow chartfor P1635. I have 5-volt ref. at egr,tps,map code keeps coming back checked harness found no problem the only runnng problem is high idle intermittenty clear code drops down to norm. And one time while testing i had 6.25v ... Trouble codes: P1635
1994 GMC G2500 Rally 5.7L cruise control VIN: 1GKEG25K6R
I'm trying to find the location of the cruise module on this van so I can proceed with testing, however neither Mitchell or Alldata have the location right. The only things around the parking brake are the fuse block, airbag module and vss amplifier. If anyone...
1997 GMC C1500 Suburban 5.7L door locks VIN: 1GKEC16R9V
customer concern is when you push the power lock switch the door locks will lock and then unlock. After messing with system a little I found you can hold lock for short time and the door locks will lock and then move a little further and stay locked, but norma...
1995 Oldsmobile Aurora 4.0L head lights, dash lights, tail lights VIN: 1G3GR623CS
hey, so we've got a 95 olds aurora with a strange lighting problem, the dash lighs, head lights and tail lights will randomly flash on and off while the car is off this will happen for about an hour or so and then they will stop. it will only happen once in aw...
1992 Pontiac Bonneville SE 3.8L Poor Idle Quality, Hesitation, Backfire VIN: 1G2HX53L2N
Hi guys. New to this so bare with me. This car came to me two weeks ago on a hook and I replaced the crankshaft position sensor at that time and everything was okay. I also informed the customer that he needed to replace his plug wires because they were arcing... Trouble codes: 26 (Quad Driver module Failure)
1993 Pontiac Grand Am SE 3.3L No Start VIN: 1G2NE14NXP
We have a problem the car came in with no start found no spark or injector pulse ck crank sensor and module found ok checked wiring to crank sensor found no resistance. We have checked every thing i can think of. We have even changed module and crank sensor. ...
2000 Pontiac Grand Prix SE 3.1L No Start VIN: 1G2WJ52J6Y
brain fart time, it's too hot to think. car starts and dies, will not run. has good fuel pressure, spark and pulse. scanner will not communicate. all fuses are good. whats next??? I think security key is ok
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)

Fixes & Summaries for GM
Fix/Summary Answers
1989 Buick Reatta 3.8L evaporator VIN: 1G4EC11C7K
Thanks to fellow mechanics taking time to read my request and reply I got this one fixed. I had 5 replies, 3 of them said that I had to lower the front of the engine by raising the car up on jack stands and removing the 2 front sub-frame bolts and letting the ...
1990 Buick Electra Park Avenue 3.8L Hesitation, Stall, MIL Lamp on VIN: 1G4CW54C6L
Checked everything everybody suggested and finally ask customer where the fuel was puchased. Turns out she had purchased gas at a station that had minimal flooding in the area. We took a fuel sample and found 10% alcohol and about 3% water. Back to basics. Tha... Trouble codes: 34 (MAF Sensor low).
1995 Buick LeSabre Limited 3.8L MIL Lamp on VIN: 1G4HR52L1S
Thanks for the replies to this post , It was the pcm that failed , the mitchell on demand has no info on a tsb or does not refer to the pcm in any of its flow charts on this code (something you have to remember on your own on this one) Thanks again everyone an... Trouble codes: P0341.
1993 Cadillac Fleetwood 5.7L warning lamp VIN: 1G6DW5274P
Thanks guys the fix was to do the wot 3 times at the throttle body and it worked. I guess the cable or the tp might be off some. Checked with snap on scanner and it is in specs but they are pretty broud. Well problem is solved thanks again for the replies
1994 Chevrolet Lumina APV 3.8L No Start VIN: 1GNDU0615R
thanks for all your help.frederrick [...] had the ansewer i was looking for.( obd 1 scan tool) i didn't have that capability. so i just went forward & test like any other car for a no run the computer was bad. thanks again randy.
1994 Chevrolet G20 Sportvan 5.7L Hesitation, Surge, Stall VIN: 2GNEG25K4P
Thanks to all who took the time to help. We had already check all the things that were offered before we posted. This one has got us baffled, the vehicle is drivable at this time, so the customer will bring it back when the shop slows down, and then we will fi...
1997 Chevrolet C1500 Cheyenne 5.7L brakes VIN: 1GCEC19R2V
This truck is fixed! The wheel cylinders in the back were causing the problem. Thanks James! But, these were fairly new, and when I took them apart, they were pretty oily inside. After talking with customer, (which he goes to these quick lube places), I'm gues...
1999 Chevrolet Cavalier 2.2L overheats VIN: 1G1JC1243X
I want to thank all who took their valuable time to help me with this problem. I finally got an ans. from my GM dealer about a reflash. They said it would not address the fan turn on temp. issue. They did send me info about a air bleeding proceedure where you ...
1999 Chevrolet Astro 4.3L A/C operation VIN: 1GBEL19W5X
hello fellow members. this vehicle finally blew the fuse constantly. 'DRUM ROLL' and the problem was, the high pressure switch! thanks for the 3 replies. you know who you are.
1994 GMC C1500 Sierra SL 5.7L Hesitation, Surge, Cuts out VIN: 2GDEC19KR1
Thank you for the info! I had several replies about EGR valve, but I failed to let you know that I had already disconnected it and problem still occured. I did find out that if O'2 milli-volts go over 1000 it is usually a ground problem. I never found a wiring...
1997 GMC K1500 Sierra SL 5.0L No Start VIN: 1GTEK14M6V
I Want to Start By Thanking All Replies to to REQUEST FOR Help SOME Said was Plugged Injectors and BAD FUEL Pump and Even Had a Few Idle Control Motors I changed Fuel Pump and Both Pressure and Return Hoses Plus Ran the Gm Fuel System Cleaner Through System at...
1993 Oldsmobile Bravada 4.3L Lubrication VIN: 1GHDT13W6P
Almost everyone told me to replace the engine or send the man down the road. Well I gave him that option and I am waiting for him to flip his coin. Thank you for all the help
2000 Pontiac Grand Prix GT 3.8L blower motor VIN: 1G2WP12K9Y
Thanks to all who replied with your help. After finally getting back to the car to check things. I should have just gone back to the basics and rechecked things. Seems the blower motor I got was bad also, after replacing with another blower motor, all is good....
2001 Pontiac Montana 3.4L dic VIN: 1GMDX13E11
well this wasnt a b.c.m after all the dic had to get reprgramed the dealer said but this van had no codes in the system . they said they see this from hooking up jumper cables wrong. i dont believe it but its fixed now so its all good. thank you for repling to...
1994 Saturn SC2 1.9L MIL Lamp on VIN: 1G8ZH1578R
Hi All Thanks for the 10 responses, All were great, one mentioned that if a soda or coffee was spilled on the center console and computer connections were sugar soaked possible prob.(something was spilled, cleaned contacts didn't help, next someone mentioned... Trouble codes: 26 (quad driver output fault).
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