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Prev Professional Automotive Repair Technical Discussions for March 24, 2005
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Open Help Requests for GM
Help Request Answers
1991 Buick Regal Gran Sport 3.8L hydraulics VIN: 2G4WD54L0M
I have no power brakes. This happened suddenly. abs no codes. fuse is okay
1995 Buick Park Avenue 3.8L No Start, Poor Idle Quality, Cuts out VIN: 1G4CW52KXS
This car was brought in on a hook last Thursday. The customer called and said he attempted to start it and it made a noise he likened to a cat caught in the fan belt, (I have not been able to recreate this noise)and then would crank but no start. When it arriv...
1995 Buick Riviera 3.8L Poor Idle Quality, Hesitation VIN: 1G4GD2218S
came in with a cold idle and lacks power when cold coplaint. also a hot soak rough idle that would clear out. the hot soak issue was resolved by replacing the fuel regulator with a 96 modle (TSB for this). the rough run and lacks power cold- we have confirmed ...
1994 Cadillac DeVille Concours 4.6L Misfire, MIL Lamp on VIN: 1G6KF52YXR
Customer came in with driveability problem, code PO35 kept coming up. Could not find problem, replaced module, same problem. Acts up intermittently, warm or cold. Been to dealer to no avail. Trouble codes: P0035
1995 Cadillac Eldorado ETC 4.6L Struts VIN: 1G6ET1295S
is there any way to bypass the suspension control,to install passive type struts on the front? and keep the message center from displaying "service suspension control"
1997 Cadillac Catera 3.0L p0560 VIN: WO6VR52R8V
we have a car with p0560 code volatge problem and poor idle overheating at idle only cooling fan comes on at 237 degreese car runs ok idles at 630 to 645 warm Trouble codes: P0560
1997 Cadillac Catera 3.0L Anti-theft VIN: W06VR52RXV
Just finished installing a used replacement engine and transmission in a 97 Catera. It started once, then wouldn't restart. I performed the ECM/Immobilizer relearn with the Tech 2, then it started. Once the key is shut off, it won't restart until the relearn i...
1997 Cadillac DeVille 4.6L Oil leak/burning? VIN: 1G6KD54Y6V
Car is losing oil. No smoking and losing it rapidly. Good friend of the owner and in regularily to chat. Have been keeping a close eye on oil level, checking each fill-up and has been good up until now. Car worked great up until last week. Then oil light came ...
1985 Chevrolet Caprice Classic 5.0L Hesitation VIN: 1G1BN69HIF
this for gm tech. chevy hesitate on acceleration some time stall. run fine after all other speed. check egr, check all spark plugs, wires are new. adjust carburator. no vacuum leak.adjust timeing.any good thought. thanks.
1992 Chevrolet Corvette 5.7L High Beam Indicator VIN: 1G1YY33P8N
When starting car or turning key on, and turning headlights on low beams, everything is fine. When switching to high beams, everything works fine. However, when I switch back to low beams the headlights change to low beams but the indicator stays on high. Indi...
1997 Chevrolet K2500 5.7L Cuts out VIN: 1GCGK24ROV
The truck will BUCK once and only once like a very quick ign. off and back on. It accures at the end of a upshift cycle after 4th and lock up and your getting out of the throttle or the load is easing up, Or after a climbing a slight grade and the load backs o...
1998 Chevrolet Blazer 4.3L ABS Trans
replaced engine, had cracked head. Didnt drive but three blocks to shop. replaced engine then went to testdrive on highway.speedometer is jumping. transmission upshifting and downshifting. ABS motor kicks in when braking. Had code PO238 SPEED sensor signal mal...
1998 Chevrolet K2500 Cheyenne 5.7L Transfer case/prop shaft? VIN: 1GCGK24R6W
Greetings! This vehicle was in for a routine oil change when the driver mentioned that it had started making a single loud bang or snap type of noise when he was in 4 wheel drive and would back up a few feet. We test drove it and it will make a single nasty ba...
1993 GMC Safari SLE 4.3L balance shaft VIN: 1GKDM19W7P
hello guys and gals posting this for a freind who is rebuilding a 4.3 vin w motor. was wondering if the balance shaft is aligned with anything. it is geared to the camshaft but he cannot find any timing marks to line it up. he called the machine shop they sai...
1998 GMC K1500 Sierra SL 5.7L vtd VIN: 2GTEK19R2W
Hello Techs, This is a new one for me maybe somebody can give me some insight where to start. Vehicle will start then die. I have code P1626. When turning on the key there is no Mil light, security lights, ect that light up. The PRNDL indicator is the only lig...
1999 GMC Sierra 2500 SL 6.0L Stall VIN: 1GT6C24U5X
stalls at stops when warm in gear only. no other drivability concerns, acceleration is good, idle is smooth, no codes stored, dealer had no recomendations for the customer, neither do i at this point. i have verfied the problem a couple times but was unable to...
2001 GMC Savana 1500 5.7L odmeter & prndl VIN: 1GDFG15RO1
odometer/prndl stay lit even when key is out of vehicle, does anyone know what actually powers the odometer/prndl, everything else on the cluster functions properly,somedata(alldata)has limited schematics & nothing my techs can find directly to help aid them.a...
1998 Oldsmobile Intrigue 3.8L abs VIN: 1G3WH52K5W
after replacing right front speed sensor (code 1222) and left rear (stopping at 0-5mph) now code 1222 still comes back at 20 mph, all sensor and wiring tested fine. when spinning left rear wheel on hoist we noticed right front sensor shows signal?? anybody cam...
1996 Pontiac Grand Prix GTP 3.4L Timing belt VIN: 1G2WJ12X9T
Good morning GM techs. I have a good customer that had a timing belt replaced on this 3.4 V6 by another shop out of town. He made it back home and came right to my shop because of BAD noises coming from the front of the engine. The best way I can explain it is...
1996 Pontiac Grand Am SE 2.4L Misfire VIN: 1G2NE52T3T
I'm wondering if there is something I'm missing. This will be the 4th coil housing replaced on this car. About every 3 months (2000-3000 miles) the car comes in with a miss and the coil housing is replaced and the car sent down the road for another 3 months. I...
1999 Pontiac Grand Am GT 3.4L Starting VIN: 1G2NW12E2X
This vehicle will crank and start, but then shut right off. It is setting a code 1626 for "theft deterrent system fuel enable". I have tried to do the relearn procedure and it doesn't make a difference. Unfortunetly my scanner doesn't have the ability to read ...
2003 Pontiac Grand Am SE 3.4L Excessive Emissions, No Start, Poor Idle Quality, Misfire VIN: 1G2NF52E63
Hello to all need some help brang car in to do intake gasket on it as they all leak. Took it all apart and put it back together went to start and would not start misfired banged. finally after cranking it started but it stunk up the shop so bad couldn't even b...
2002 Saturn SL1 1.9L MIL Lamp on VIN: 1G8ZH52842
About one month ago we replaced the secondary air injection pump. Now the light has come back on. The first time we removed the air pump we noticed alot of water in the pump. Any one have this problem before? Is there a fix? Any help appreciated. Trouble codes: P0410

Fixes & Summaries for GM
Fix/Summary Answers
1987 Buick Electra Park Avenue 3.8L hard starting VIN: 1G4CW5133H
Well people this one is fixed. Thanks for all the help from everybody. I came in today and decided to bring the #1 to TDC and mark the dampener to see what the timing was. One of you suggested to disconnect the [...] wire to elimanate the computer from control...
2001 Buick Century Custom 3.1L Horn VIN: 2G4WS52J91
Car is fixed. Thanks to all who responded. Most had it right with a problem at the fuse block. I removed fuse block on right front inner fender and removed lower wiring connector(white one). This contained the green wire going to horns. Found melted terminals ...
1994 Cadillac Seville SLS 4.6L Poor Idle Quality, Stall, Hard start VIN: 1G6KS2YXRU
Thanks for all the help. Sorry about the delay in posting the repair but, just today we got the vehicle where we believed it was acceptable. Most of the posts said to replace the fuel pressure regulator. To replace this you have to take the plemun cover off an...
1992 Chevrolet Cavalier RS 2.2L No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1G1JC5448N
Are you all ready for this? Apperantly when this thing would backfire it blew out the egr valve. Replacing it got me back to the original problem which was that someone moved the wiring harness down at the starter up to where it was resting against the exhaust...
1998 Chevrolet K1500 Cheyenne 5.7L Park Lamps VIN: RBT11W0256
I had much help from all, I never did receive or aquire a proper wiring diagram. With the Remote function module removed, the truck seemed to be trouble free, I received that one phone call from the customer saying it had acted up that once, and not yet again ...
1999 Chevrolet Tahoe LS 5.7L clunk VIN: 1GNEK13RXX
Hey Guys, Thanks to many techs and shops who responded to my hail.The truck is now fixed.GM does make a special high temp lubricant for the drive shaft splines.My chevy dealor did not know what it was,but my GMC dealor new exactly what it was.The part number i...
1998 Oldsmobile 88 Royale 3.8L Mechanical VIN: 1G3HN52KXW
hi every body,i get alot of replies and i thank every one of you tech,for the help. the problem the was very simple.turn out like every one know excapt me was missing small o ring from the pcv valve .thank alot .
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