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Prev Professional Automotive Repair Technical Discussions for December 13, 2004
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Open Help Requests for GM
Help Request Answers
1986 Buick LeSabre Custom 3.8L convertor lockup VIN: 1G4HR6937C
does any one know where i can get a lock-up delay module for a 440t4 transmission
1988 Buick Skylark Custom 3.0L Hesitation, Cuts out, Stall, Misfire VIN: 1G4ND51L5J
Car has hesitation on snap throttle and under load. Missfires into intake manafold. Bring up throttle gently then ok. all things above have been changed recently and I have tripple checked all the operations of: MAF, Intake air temp, crank sensor, modual, tps....
1989 Buick Skylark Custom 2.5L No Start VIN: 1G4NC54UHK
hi, i have this buick died on highway. i have no injector pulse, tried different computer, same problem. tried to ohm injector, is 1.3 ohms but shop keys does not give spec that i can find, so i dont knoe if that is good or bad.
1997 Buick Century Custom 3.1L Misfire, MIL Lamp on VIN: 2G4WS52M7V
Hello Fellow Techs. Todays Diagnostic Dilema comes from a 1997 Buick Century with a 3.1 Liter Engine. The customer came in complaining of check engine light coming on. Scanning the computer I found code P0300-Randome\Multiple Misfire. Further inspection showed... Trouble codes: P0300 (Random/Multiple Misfire)
1990 Chevrolet Lumina 3.1L Poor Idle Quality, Surge, Misfire VIN: 21GWN54T6L
Started with a high idle. Initially thought I had a severe vacuum leak, but was absoutely unable to find one; even replaced majority of vacuum hoses to rule out--sprayed carb cleaner every where I thought there could even be a leak. Thought an EGR valve (Dig... Trouble codes: 22 (high tps voltage)
1995 Chevrolet C2500 Suburban 7.4L Excessive Emissions VIN: 1GNGC26N9S
Hello GM techs. I have this Surburban that failed smog as a gross polluter for NOx. I found no misfires and the vehicle runs very smooth. I did replace the wires because one broke when I removed it for cat testing. I determined the cat wasn't retaining oxygen ...
1996 Chevrolet C1500 Suburban 5.7L popping VIN: 1GNFK16K9R
Happy Holidays all. This 96 Suburban has a 2000 suburban motor. I was informed the intake manifold was purchased at local chevy dealer to accomodate the original TBI system. Nice clean job underhood. The problem is an intermittant popping in intake that only...
1996 Chevrolet Corvette 5.7L air bag VIN: 1G1YY22P5T
tnx for the help in advance.our local dealers say that they have never replaced & do not stock this.i'm i missing something here or are these things bullet-proof.veicle has not been in any collision.
1999 GMC Savana 3500 5.7L Mechanical VIN: 1GDJG31ROX
Evening Folks We have this box van that has a strange brake issue. One of our companies bought this truck from Ryder and it was brought to us because the driver said the front brakes would lock up on wet surface and slide,what made it worse was when the ABS w...
1999 Oldsmobile Intrigue GL 3.5L remote door locks VIN: 1G3WS52HXX
coustomer brought in car for inoperative remote keyless entry. tried to reprogram according to mitchells dirrections."remove key from ign. close all doors hold door lock switch in un lock possition insert key 3 times release door lock switch , wait for 3 chime...
2000 Pontiac Sunfire SE 2.2L Mechanical VIN: 1G2JB1244Y
Vehicle came in at 46000 miles with an overheat problem found combustion gases in coolant, diagnosed faulty head gasket, started disassembly and found that center head bolts were loose, continued with head gasket replacement, reassembled per mitchell 46 43 and...

Fixes & Summaries for GM
Fix/Summary Answers
1994 Buick Park Avenue 3.8L radio control VIN: 1G4CW52L3R
Thank you to all that responded. We installed a known good radio assembly and all radio/ heat functions now operate to specs.
1998 Cadillac DeVille 4.6L battery draw VIN: 1GGKE54Y4W
the rap relay seems to have fixed this caddy ,waited to close this one due to the fact it only would happen every 5 or 6 days
1993 Chevrolet G20 Beauville 5.7L Hesitation, Cuts out, Stall VIN: 1GCEG25K9P
Well, this one turned out easy. This morning the van turned into a no start. I got spark but no injector pulse via noid light. Check power for the injectors which is present. I then grabbed the lab scope. I checked for the proper signals: Distributor reference...
1996 Chevrolet Lumina 3.1L MIL Lamp on VIN: 2G1WL52M7T
Thank you everyone for all the helpful advise. without it i wouldnt have made the repair. the code p1675 was being caused by a faulty pcm. i did a voltage drop test on the vent solenoid and also manually activated the switch and both tests proved the vent sole... Trouble codes: P675.
1998 Chevrolet Venture 3.4L heater VIN: 1G6AW69Y4D
At this time owner does not want to spend the money to find problem, however, this will be short lived because winter is here in Illinois. Thanks for all of the replies and good information, but until I get a chance to actually work on the vehicle I do not kno...
2004 Chevrolet Optra 2.0L Forward gears VIN: KL1JK52ZX4
Thanks to all who responded to my Trans nogo problem, I ended up replacing the transmission with a new one, I and Tac figure it was a hydraulic problem that was causing no 1st or 2nd gears
1999 Oldsmobile Intrigue GL 3.5L Crank Sensor VIN: 1G3WS52H0X
Once again,it's the simplest solution that makes the fix. It goes to show that 'KISS' (keep it simple, stupid) should always be adhered to. Most of the replys focused on the no crank condition after I installed a new PCM, stating that GM PCMs need to be progra...
1993 Pontiac Bonneville SE 3.8L starter VIN: 1G2HZ52L6P
well, the bonneville works well now- I guess I was confused by the security light not flashing- reading the procedures further, I see that it will stay lit during lockout- I was looking for a flashing light- the wires to the lock cylinder must have been almost...
2001 Saturn SL1 1.9L Rack VIN: 1GBZH52801
Thanks for the 4 replies. 2 stated to replace the rack, common problem. 1 stated noise might be from column traveling down,however we already 100% pinpointed the noise by unhooking column during checking. 1 stated replacing column was only temporary fix,that n...
2001 Saturn SL1 1.9L Cooling System VIN: 1G8ZS52812
Hello Everyone Thanks for all the info. Most said there was a problem with the head cracking on the cam journal. Will get oil in coolant but no coolant in oil. With this car, I drained the oil, removed valve cover, and pressured tested the cooling system and...
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