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Prev Professional Automotive Repair Technical Discussions for August 2, 2004
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Open Help Requests for GM
Help Request Answers
1982 Buick Century Limited 3.0L Hesitation, Stall, MIL Lamp on VIN: 1G4AL27E5C
Can get car to run great in the bay but will not accelerate under load. Mc readings are all over the place, one minute it will be lean then go rich. Have tried the troubleshooting tree for an 83 model and the dwell readings change from one side to the other ma... Trouble codes: 44 (Lean Exhaust)
1997 Cadillac DeVille d'Elegance 4.6L splash shield VIN: 1G6KE52Y1V
Customer complains of loss of power steering or lock up when he drives in heavy rain or through puddle - There is no undercarriage splash guard over the power steering belt - but there is on the other side - Is something missing - I see no previous application...
1988 Chevrolet Celebrity 2.8L No Start, Misfire VIN: 1G1AWS1W7J
Hi all, this Celebrity came in as a no start & no spark with good fuel pressure. After having the module test good and assuming the coils wouldnt all go bad at the same time I guessed that the crank sensor failed and installed a new one. Now I have good spark ...
1991 Chevrolet C3500 Silverado 5.7L front brakes VIN: 1GBJC34K8M
this truck has me baffled, it came in pulling to the left when brakes are applied; i checked tires and air pressure, ok and they are brand new michelins. i then took a look at pads and calipers, it felt to me like there was a slight drag at left front so i rep...
1992 Chevrolet S10 Blazer 4.3L Cuts out, Stall VIN: UNKNOWN
this 1992 s10 blazer with 4.3L Vortec begins cutting out very badly and will die while driving.It only happens after driving for a while.When it begins missing I've tried putting it in neutral but that does'nt help.If I turn the ignition off then start it back...
1996 Chevrolet K1500 Cheyenne 5.7L No Start VIN: 2GCEK19R8T
It started not starting cold and gradually went to not starting warm. It will always start with starting fluid. The fuel pressure is low according to specs of 60-66 but I tested another identical truck and it had 56 psi and ran good. The injectors look good cr...
1996 Chevrolet K1500 5.7L Unknown VIN: 1GCEK14R8T
4l60E trans. no 2nd gear. trans feels good. dropped pan, inspected and no bad material in it. fluid seems good. no codes. Put gear shift selector in 3rd or 4th, to start driving (so there is no confusion here that its starting in 3 or 4) and 1st gear feels goo...
1997 Chevrolet Tahoe LS 5.7L convertor VIN: 1GNEK13R0V
We are a Honda shop and this is my neighbor's Tahoe. My neighbor drove the truck home from the service shop (about 100 miles). The next day the truck would stall whenever it was put into gear. It was towed to my shop where I discovered that the wiring harness ...
2001 Chevrolet Cavalier 2.2L trac VIN: 1G1JC12441
scan ecm found [...] tps tps was found to be working lights and trac lights together.can clear ecm but they come back on and transmission shift hard. thanks for any help. joe
1993 Oldsmobile Cutlass Ciera 3.3L No Start VIN: 1G3AG54NXP
fuel pump will not turn on-check for voltage at fuel pump connector-had battery voltage for three seconds-then 0 voltage-which indicated bad fuel pump-changed fuel pump-same results-if i energize fuel pump test connector,fuel pump will run continuously-the boo...
1997 Pontiac Grand Am SE 2.4L Misfire, MIL Lamp on VIN: 1G2NE52T2X
I got this one the day I got back from vacation ( to a bad start). Another tech in our shop had looked at it with my father (the shop owner) and found thousands of misfires recorded in data history on cylinders #3 and #4. A injector pressure drop test... Trouble codes: 0300 (Random misfire)
1997 Pontiac Grand Am SE 2.4L MIL Lamp on VIN: 1G2NE12T4B
Help everyone we checked codes and had a p1441 Purge flow deteced during non purge. we have 9%purge flow @ idle my question is should we have any purge @ idle. the ecm is comanding purge at idle because we have power and a flashing groung at purge soloniod.we ... Trouble codes: P1441
2000 Pontiac Montana 3.4L MIL Lamp on, fuel gauge erradic VIN: 1GMDX03E6Y
Van came in with fuel gauge inoperative and or erratic service engine light on also. Found trouble code PO463 Fuel level sender circuit high voltage. Found TSB for related system says that the C305 connector behing drivers seat may become corroded or pins may ... Trouble codes: P0463

Fixes & Summaries for GM
Fix/Summary Answers
1990 Chevrolet Corvette 5.7L Surge, Cuts out VIN: 1G1YY2387L
One suggestion was check for a bad TPS, a dead spot at idle or near idle or it could be out of adjustment. Ours checked ok. Another suggestion was bad battery, the battery in not handling the the electrical loads of a/c & cooling fans kicking on, the voltage d...
1992 Chevrolet S10 4.3L No Start
12 of 13 replies were right on the money! The fuel pressure was not high enough to open poppets on the CPI system. This was the 4th fuel pump installed in this truck . There is a w or a z code in the sn. and the parts store listing did not specify untill asked...
1993 Chevrolet Lumina APV 3.8L Cuts out, Stall VIN: 1GNDU061L7
i'm sorry this took so long to close i just finished it today. the owner baught a new vehicle so he he weren't in a hurry so it was my spare time work. i checked all the grounds when it would die which took along time cause it died whenever it felt like it. ... Trouble codes: 47 (uart link problem), 56 (qdm 2 problem history code), 61 (cruise control vent history code).
1996 Chevrolet C1500 Cheyenne 4.3L Misfire, MIL Lamp on VIN: 1GCEC14W9T
Suggestions were; cap ( already replaced twice ), connections @ camshaft position sensor (didn't change any), check cam sensor signal (some times had square wave - sometimes not). Replaced cam sensor with GM part ( had already replaced distributor twice with a... Trouble codes: P0340 (camshaft position sensor problem), P0300 (random misfire).
1997 Chevrolet Venture LS 3.4L Stall, MIL Lamp on VIN: 1GNDX03E2V
I had three replies. Two said to replace the VSS and one said to check the wiring at the sensor. On some the GMs the wiring can rub on the axle and chaf the wires. Nothing showed up so I visited with the customer about it and he saided to try a new VSS. So far... Trouble codes: P502, P0503.
1996 GMC C1500 Sierra SL 5.0L MIL Lamp on, Harsh trans engage VIN: 2GTEC19M1T
Bottom line is whether crow tastes better with ketchup or salsa verde... 8() Indeed the KS module had not been transferred to the replacement PCM. Being this was the first PCM replacement that I have done where no outside services were needed (Reflash), I ... Trouble codes: P0325 (Knock sensor circuit), P1864 (TCC circuit).
1998 Pontiac Grand Am SE 3.1L cam VIN: 1G2NE52EXX
Thanks for all the info on this engine, we are going to replace the block and install an aftermarket solid cam, this should take care of it.
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