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Prev Professional Automotive Repair Technical Discussions for June 2, 2005
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Open Help Requests for GM
Help Request Answers
1990 Buick Regal 3.8L Cuts out, Misfire, MIL Lamp on VIN: 2G4WB14L5L
Car runs good cold, but after good warm up spits, sputters and stalls. Snapon scanner starts to wig out, coolant temp goes from normal to -14. O2 reads lean extreme, tps readings jump to 4.40 when this spitting and sputtering starts. Code 42 shows up on scanne... Trouble codes: 42 (est problem)
1997 Buick Park Avenue 3.8L MIL Lamp on VIN: 1G4CW52K0V
this car was just purchased by one of my customers. 1 day afetr the purchase the cel came on they brought it in i ran a scan on it and came up with code 0401. when i started looking around under the hood the first thing i noticed was the map sensor was in 2 pi... Trouble codes: 0401 (egr insuficienent flow.)
1999 Buick Regal LS 3.8L Poor Idle Quality, Stall VIN: 2G4WB52K0X
vehicle towed to shop. fuel pressure was little low,replaced fuel filter,was completelly plugged.engine would run,but poorly and stall. seems to be running rich.
1993 Cadillac DeVille 4.9L No servo operation VIN: 1G6CD53B1P
Vehicle came in with no cruise operation. Customer stated that it worked sometimes. I never got it to operate. Noticed no cruise lamp on dash. I checked for codes, none. I performed the PCM system test and checked each component separately, all components pass...
1999 Cadillac Seville STS 4.6L Power Steering VIN: 1G6KY5490X
Help! You can feel pulsing in the steering wheel when making turns. I have replaced the high pressure hose, after asking two Cadillac service writers opinions. No luck, replacing it did not help. It is not speed sensitive. Low speed turning as well as high spe...
1971 Chevrolet Chevelle SS 396CID Electronic VIN: 136371R117
I am looking for wiring diagrams for the A/C compressor and blower system. The blower comes on occaisionnally and the compressor never. i can jump to the compressor and get the clutch engaged but it will only run for about 30-45 seconds and then it shuts off u...
1996 Chevrolet C2500 Cheyenne 5.7L Stall VIN: 1GCGC29R9T
This truck came into the shop with a intermittent stalling and dying problem. I have checked all the powers and grounds going to the computer and have checked and monitored the fuel pressure when the problem occurs. Fuel pressure stays consistant and the volta...
1997 Chevrolet Astro 4.3L steering box VIN: 1GNDM19WOV
Customer came in steering very loose can turn steering wheel with one finger system feels like no assist check steering wheel sensor buttom of steering column also test power steering pump pressure switch replace both switches no difference in steering can any...
1997 Chevrolet S10 LS 4.3L Poor Idle Quality VIN: 1GCCS19X8V
stalled towed in no spark, found burnt through rotor,carbon traced cap , replaced cap rotor & coil, started good ran one day , stalled restared, runs rough intermitant knock, will run good & smooth then run rough,knock, no codes, flused injectors,56psi fuel pr...
1998 Chevrolet Express 3500 LS 5.7L whistling noise VIN: 1GAHG39R0W
Hi Folks This van has a very noticable whistling noise during deceleration. It only occurs while driving and lasts 3-4 seconds. Sounds like an air leak & It appears to be coming from the upper intake/throttle body area but we can't pinpoint the source exactly...
2000 Chevrolet Impala LS 3.8L evaporator VIN: 2G1WH55K9Y
need some help on the removal process on this evap. Shop key is of no help. Problem is trying to remove the inst. panel to gain access to the box. Looks like I have to remove the brake booster to gain access to the 6 nuts holding the bracket/cross bar to the f...
2000 Chevrolet Blazer LS 4.3L Hesitation, "pops thru intake" VIN: 1GNDT13W7Y
Hello tecks, this one has me stumped. The truck starts right up and idles great. when it is acceled. it bogs down (no power) pops thru intake. When you get to a 35 mph roll and punch the accel. it bogs, pops , clears up and takes off. This happens all the time...
2000 Chevrolet Malibu 3.1L Misfire VIN: 1G1ND52M8V
Hi iatn members, This car has a misfire on #6 cylider at idle. The car seemed to misfire worse when first started after it had sat awhile and then clear up after idling about half a minute. I figured injectors may be leaking a so I put fuel gauge on and press... Trouble codes: P0300
1994 Oldsmobile Cutlass Supreme 3.1L No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall VIN: 1B3WH55M2K
This car intermetantly stalls (after about 60 km) then runs like crap spittering spuddering, sound like backfiring. (can't be driven, running so poor, sometimes will not start) By the time it is towed in it is fine. We once had it act up in shop, check fuel pr...
1998 International 4000 4800 7.6L engine VIN: 1HTSCAAM5W
This truck was brought in for a problem of overheating on the highway. It runs cool in town at about 180 degrees but after driving on the highway in hot temperatures it will run up to the 230 degree mark and spew out anti freeze. We have recently had the radia...
1998 Pontiac Grand Am SE 2.4L Mechanical
This problem started with a new water pump. At idle, there is not enough tension on the timing chain shoe so the engine rattles until the rpm is raised to around 1100 rpm. The alldata method for setting the tensioner shows you releasing the tensioner with a sc...

Fixes & Summaries for GM
Fix/Summary Answers
1990 Cadillac DeVille 4.5L check engine VIN: 1G6CD5330L
the air pump was weak so i replaced the air pump so far so good thank you
1992 Cadillac Seville 4.9L Passkey system VIN: 1G6KS53B7N
Well this Seville is running again. I was convinced that the problem was in the ignition or passkey system and wasted a lot of time doing a tear down of steering column to get to the ignition. The problem turned out to be a badly corroded wire at the engine co...
1990 Chevrolet C1500 Cheyenne 4.3L Poor Idle Quality, Stall VIN: 2GCEC14ZXL
The port in the throttle body to the map sensor was clogged with carbon. We cleaned the port and now the vehicle runs great. Thanks for all of your help.
1991 Chevrolet K1500 Cheyenne 5.0L Front wheels VIN: 2GCEK19H6M
Well thanks for the info, I took the front drive shaft out and He has been driving for two weeks and the truck does not lock up.Also I did not mention before you here a clunk before it locks up and release the lock,after the drive shaft you still here the clun...
1997 Chevrolet S10 4.3L MIL Lamp on VIN: 1GCT19W8V8
Thanks for the replies, i received 6 replies, the customer did not return to have any more work done. Severeal replies said to check purge valve, to check to see if it holds vacuum with engine off & key on. Others said possibly bad vacuum sensor. & one said to... Trouble codes: P1441 (evap system flow during non-purge).
1999 Chevrolet Silverado 1500 5.3L 1-2 / 3-4 shift VIN: 1GCEK19TOX
thanx for all the help, well it came down to the 1-2 shift solenoid, but the part didn't fail. When my mechanic dropped the pan the first time the pan has very little clearance from the cross over pipe. end results where the clips being unsnapped on the soleno...
2003 Chevrolet Suburban 1500 LT 5.3L Compressor VIN: 1GNFK16Z53
Thanks to everyone who responded. After hours of running this vehicle and waiting for the a/c to act up it finally did. When I went to disconnect the a/c pressure cycling switch to do a little testing, the a/c compressor re-engaged. Looks like we found the pro...
1993 GMC C3500 Sierra 7.4L Clutch master cylinder VIN: 1GDHC34N3P
Thank you iATN and all the Techs that reponded. Every Tech that answered said that most likely the problem was the clutch fork, was either very dry and needed to be lubed or was broken. I honestly believe that all of you guys were right but the city said that ...
1987 Pontiac Bonneville LE 3.8L Poor Idle Quality, Cuts out, Stall VIN: 1G2HZ5130H
Thanks for all the help! It turns out I was going the wrong direction, I was told the ignition was okay then later found out the trouble started with a dead coil pack then led to cutting out/stalling after replacement. And, sure enough, it was the ignition, af...
2001 Pontiac Sunfire SE 2.2L Hesitation, Cuts out, Misfire VIN: 3G2JB12461
Ok Its a fix. I just finished typing out a long detailed description of the fix and somehow I lost it so here is the short version. Thanks to everyone who took the time to reply. I had some excelent ideas shot my way. Iwould especialy like to thank Ripal [...]... Trouble codes: P0300.
1996 Saturn SL1 1.9L stays in first VIN: 1G8ZH5288T
sorry for the long time for a reply, my computer crashed. It turned out to be the wrong transmission in the vehicle, thanks for the info
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