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Prev Professional Automotive Repair Technical Discussions for November 7, 2005
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Open Help Requests for GM
Help Request Answers
1993 Buick LeSabre Custom 3.8L exhaust VIN: 1G4HP53L5P
we have been changing oil on this car since 1/17/2002 @28225 miles,1/7/03@ 30301 miles,1/12/04 @ 32161 mi. intake gasket,plugs,wires,air & fuel filters @ 33071*4/20/04...oil change 34248 * 1/18/05 ***8/12/05 customer said black smoke was coming from tail pipe*...
1995 Buick Regal Custom 3.1L internal VIN: 2G4WB52M3S
on a rd test. only when you accelerate the pop noise is present.only in drive.the noise is on the left side of the vehicle.in the area where the drive axle goes into the transaxle.when you speed up real fast the pop noise is there.
1999 Buick Regal LS 3.8L abs VIN: 2G4WB52K5X
customer came in to our shop with abs light and speedo not working. did the whole visual check as well as pulled codes. codes found in the system were as follows p1118;c1214;u1096 ran through all diagnostis trouble trees found in mitchell and check all tsbs th...
2002 Buick Rendezvous CX 3.4L lites VIN: 3G5DB03E92
head lites and parking lites won't turn off we are having trouble with some automatic lites on this buick . have tech 2 for testing inputs to body control modgule and all looks well . both parking lite relay as well as low beam relay stay energized till head ...
1998 Cadillac DeVille 4.6L Cuts out, Stall VIN: 1G6KE54YWU
this cadillac is giving me fits has been having an itermittent stall for approximately 8 weeks only has code p1599 (stall or intermittent stall detected) we replaced spark plugs and wires tested coils ok replaced fuel filter replaced tps replaced both crank se... Trouble codes: P1599 (stall or near stall detected)
1990 Chevrolet G30 Hi-Cube 5.7L overheats Exh manifo VIN: 2GBJG31KXL
Hello all, I have a 1990 Chevy G30 Box van that runs fine, has plenty of power, idles fine, runs fine. But the customer replace his own cylinder heads, then he noticed a misfire low speed hot. He did his own tune up, then had a check engine light.Codes was f...
1996 Chevrolet Blazer 4.3L Hesitation, Cuts out, Misfire, Poor Fuel Economy
How we Doin, I am posting this for a friend who has just about lost his mind on this POS. when the car gets hot. it loses power. fuel press is good i have replaced.cank sensor,ignition coil,plug wires,coolant temp sensor,dist. cap and rotor,mass air folw senso...
1996 Chevrolet Astro 4.3L No Start, Misfire VIN: 1GNDM19W9T
AAARRRGGH! Vehicle will start, run, poorly, roughly, with no SES light. Give it five minutes of idle, SES light on with CKP "A" ckt codes. Fine, installed new AC DELCO (updated) CKP sensor---crank no-start. Installed two other new ACD sensors (one old disc. st... Trouble codes: P0336 (p0339-), P0339 (testing and results)
1997 Chevrolet K1500 Cheyenne 5.7L 1-2 Shift VIN: 2GCEK19R7V
This pickup came in with a harsh 1-2 shift. It feels like it has maximum line pressure. Behaves like it has codes. I expected to find the usual code 1870. However, there were no codes, even during the time it was malfunctioning. I installed a gauge and connect...
1998 Chevrolet Corvette 5.7L left front abs sensor and and ebtcm module VIN: 1G1YY32G9W
I HOOKED UP MY SCAN TOOL AND FOUND A CODE FOR A LEFT FRONT ABS SENSOR WAS OUT OF RANGE SO I REPLACED IT and cleared the code.went on a road test and light came back on rescand the car and got the same code with another code ebtcm,internal malfunction i went ba...
1999 Chevrolet K1500 Suburban 5.7L unknown VIN: 3GNFK16R0X
hope yall can help, customer came in for p/s binding with brake pedal depressed. if brake pedal is pushed the steering wheel will only turn approx. 1/4 turn, when you let off the pedal you can turn it the rest of the way. we have replaced the pump twice and s...
1999 Chevrolet Monte Carlo Indianapolis 500 Pace Car 3.8L Cuts out, Stall VIN: 2G1WX12K3X
this vehicle was brought in for an intermittent stall. there are no codes or lights on. it seems to stall at idle and decel conditions. prior to it stalling the fuel trim will gradually fall negative sometimes as low as -14. usually it will restart right away ...
2000 Chevrolet Prizm 1.8L MIL Lamp on VIN: 1Y1SK5285Y
hello everyone, i think i have missed something or the car gods are againest me. this is a clean one owner car. customers complaint is check engine on and off. code po171 came up and we replaced upsream o2. my first mistake was no road test as owner had no com...
2000 Chevrolet Express 2500 5.7L Poor Idle Quality, MIL Lamp on VIN: 1GTGG25R3Y
We have this van that has an intermittant rough/unstable idle. it has a history p0341 that returns ocasionally with a rough idle. then the idle returns to normal and every thing is fine again. i checked the archives and found nothing similar for this code. i s... Trouble codes: P0341
2002 Chevrolet Silverado 1500 4.3L Poor Idle Quality, Hesitation, Cuts out, Misfire VIN: 1GCEC14W82
This truck is misfiring badly on 1-3-5 cylinders. It has no power, it will stall if given gas and it idles extremely rough. It has a new MAF,new tune-up and all new spider injectors with fuel regulator. We have pulled of the valve cover gasket on the effected ... Trouble codes: P0101
2002 GMC Savana 2500 5.7L oil comsumption VIN: 1GJGG25R42
This truck have no leak and no improve when pcv or valve seal was replace. The truck goes a lot of time on highway. The oil consomption was since the truck have 80000 Km. Does somebody help me please? I think it was the ring but...$$$
1990 Oldsmobile Cutlass Calais 2.5L Misfire VIN: 1G3NL54U9L
Hi guys, Seems that others had looked into this one with no luck. We ran the normal tests for fuel pressure, scan the EMC, vacuum tests, etc. and haven't had any luck either. After the vehicle is driven a while, the spark plugs are white as ghosts. We have ...
1997 Oldsmobile Bravada 4.3L Hesitation, Misfire VIN: 1GHDT13W6V
I've been frustrated with this for a while, and in need of help! I recently installed a new lower intake gasket, and noticed that the oil pump turned aprox. 90 degress with the distributor removed. After adjusting, the vehicle runs, but has multiple misfires, ...
1998 Oldsmobile Aurora 4.0L racing idle VIN: 1G3GRC2C5W
I started out with a thermostat, wich relieved the running hot on the highway, but now it will overheat at it's exceptionally high idle. Block test is fine, new radiator, new water pump. Throttle body cleaning seemed to correct idle at first, but the next day ...
1999 Oldsmobile Intrigue GL 3.8L unknown VIN: K5XF304903
The vehicle came in for a sloshing noise coming from the front end. Found the noise to be coming from the RH front of the passenger compartment. The noise sounds like a cooler full of water. I called GM TACH Support and they had no similar complaints. I search...
2001 Oldsmobile Alero GL 3.4L No Start VIN: 1G3NL52EX1
This car came in on the hook and would not start. Tested fuel and ignition systems,tested good. Had anti-theft light flashing and was loosing injector paulse. Replaced ignition lock cylinder (pass lock sensor) and programed. This made the light stop flashing b...
1992 Pontiac Grand Am SE 3.3L No Start, Cuts out, Stall VIN: 1G2NE14N4N
Hi, any help would be appreciated, have a 92 grand am 3.3l which will sometimes start and run but loses spark, it always has injector pulse and shows rpm when cranking, went through the cranks no start flow chart in alldata and it said to replace ignition modu...
1996 Pontiac Bonneville SE 3.8L Misfire, MIL Lamp on VIN: 1G2HX52K5T
Hello once again. I have this bonniville here and it won't pass emission because there is a misfire code. I originally had this car in for the upper intake leaking to the point that when they shut it off and tried starting it later it was locked up. Replaced i... Trouble codes: P0300
1997 Pontiac Trans Sport 3.4L Misfire VIN: 1GMDX03E5V
Customer complains @ times on mostly cold starts, the SES light comes on and Definite Engine Misfire felt/detected. PO300 is the only DTC found, but this feels like it drops 2 or 3 cylinders w/SES on! After driving about 6 blocks SES out but can still feel a l... Trouble codes: P0300
1997 Pontiac Grand Am SE 3.1L ign lock cyl VIN: 1G2NE52M3V
Ignition lock cylinder will not move in any direction. I can't even get it to turn to acc. I can release shifter and put 12 volts to actuator on lock cyl (plunger on actuator moves about 1/4 inch upward) but key will still not turn. I am thinking lock cyl is d...

Fixes & Summaries for GM
Fix/Summary Answers
1994 Cadillac Seville STS 4.6L Surge, MIL Lamp on VIN: 1G6KY5290R
The Cadillac is fixed. Ended up having to replace the PCM to make it run properly. Had 3 responses with help- Rich Freeman Jr. gave the tip to check the cam & crank sensors while disconnected from the wiring- while cranking with the starter, there would be no ... Trouble codes: P0025, P0083.
1994 Cadillac Seville SLS 4.6L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, MIL Lamp on VIN: 1G6KS52Y4R
Thanks to everyone who replied with your help. After further checking, found the MAP sensor to be defective. Installed new MAP sensor and vehicle runnning fine at this time. Trouble codes: 80 (System Rich).
1995 Cadillac Seville STS 4.6L ebcm VIN: 1G6KY529XS
the driveabilty part of this one is solved, cust wanted the car back, put it back together and i thought it odd that the cust wanted to take it as bad as it ran, well they said it was much worse now, i had replaced plug wires due to arching, and it ran vey poo...
2001 Chevrolet Impala 3.8L MIL Lamp on VIN: 2G1WF55K51
Thanks for all the reply's and help. I checked all wiring and connectors to the PCM, everything checked ok. Replaced the Cat, and test drove a few different times, everything seems ok. Thanks again Dan [...] Trouble codes: P0140.
1988 GMC C1500 Sierra 5.7L Cuts out VIN: 1GCDC14K3J
Lot of good ideas we checed most of them and got no improvment was able to get some improvement by advancing timing from spec of zero to 8 btdc and improved problem but did not completely fix it had very little slack in chain so suggested to customer that we r...
1999 GMC Sierra 1500 SLT 5.3L Compressor VIN: 2GTEC19T4X
First of all, I would like to thank all of you that have replied. Our shop works on approx 90% Ford's and all are Ford Master Certified. When it comes to chevrolet vehicles, sometimes the easiest and most logical concerns are overlooked. It was the coil. We re...
1998 Oldsmobile Cutlass 3.1L Mechanical VIN: 1G2JD1JW35
thanks to all that replied your infomation was very helpful.
2000 Saturn LS2 3.0L Misfire, MIL Lamp on VIN: 1G8JW52R0Y
i apologize for the amount of time this took to close. we have not been able to get the vehicle back in the shop to complete. the replies i received are great. alot of maf problems. as soon as the car returns to the shop i will add to this request. Trouble codes: P0171 (system lean bank 1), P0174 (system lean bank 2).
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