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Prev Professional Automotive Repair Technical Discussions for December 3, 2009
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Open Help Requests for GM
Help Request Answers
1996 Buick Regal Custom 3.8L MIL Lamp on VIN: 2G4WB52K3T
This request is actually a parts information request. Traced this evap problem to vacuum valve. As suggested by many in the "fix" database ,it is best to replace both vacuum valve and purge solenoid. Got a Delco solenoid without a problem, but I cannot seem to... Trouble codes: P0441
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2004 Buick Century Custom 3.1L pcm/ipc/bcm VIN: 2G4WS52J44
customer dropped off car- no speedometer, no coolant temp, gear indicator shows drive in park, no radio. car starts and runs fine with no cel. tried to scan for codes- no communication with pcm,bcm or ipc. checked fuses to modules for proper voltage. seem ok. ...
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1998 Cadillac DeVille d'Elegance 4.6L steering VIN: 1G6KE54Y3W
hello fellow techs, thanx in advance. i have here a 1998 cadillac deville de ellegance, this vehicle has a noise and vibration in the steering, seems to be fluid pressure fluctuation or pulse, this happens at idle or while driving roughly 60hz frequency, with ...
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1998 Cadillac DeVille 4.6L Interior Lights VIN: 1GEEH9OY9W
Hello, I have a little problem that's driving me nuts. This Cadi. is converted into a hearse with all the normal electronic stuff that would be located in the trunk area mounted neatly on a metal sheet under the floor were the casket sits. Hard to get to some...
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2002 Cadillac Eldorado ESC 4.6L all gauges VIN: 1G6EL12Y12
I can communicate with the instrument cluster, and get readings, but there is no operation on the gauges. Cleaned grounds at front door posts with no change. Unhooked battery and clamped terminals together for a few hours. I am ready to take the cluster out, a...
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1995 Chevrolet Lumina 3.1L No Start VIN: 2G1WL52M2S
The 3x signal to the ICM checks out good as does the 24X at the pigtail. Fuses check OK. The power and ground to the ICM check out good. The IC from the ECM has about .03V with key on or cranking. Any help on this would be greatly appreciated. Trouble codes: 82 (Ignition control 3X signal error)
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1999 Chevrolet Astro 4.3L Poor Idle Quality, Misfire VIN: 1GCDM19W4X
came in for a no comm problem found fuse # 7 under dash blown (25 amp aux and dlc ) replaced fuse and checked for codes none found (i did not road test this van) came back with code p0300 and p0304 opend eng comp and found that the dist cap rotor wires and plu... Trouble codes: P0300, P0304
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1999 Chevrolet Blazer LS 4.3L tcc module VIN: 1GNDT13WXX
This Blazer will not stay in 4wd above 10 mph. Above that speed it reverts to 2wd and sets the service 4wd light. It sets speed sensor code, but all three speed sensors show good. Have replaced front speed sensor and swapped the 2 in the back with the same res...
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2000 Chevrolet S10 4.3L No Start VIN: 1GNDT13W0Y
The first time the vehicle came to me for an intermittent no start it had no spark at the plugs and weak spark at the coil. checked distributor cap and rotor, found carbon tracking on both. replaced distrubutor cap and rotor with inexpessive aftermarket parts....
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2004 Chevrolet Suburban 1500 Z71 5.3L Reduced Power VIN: 3GNKF16Z44
This problem starts with the vehicle warm and on a rough surface road. I should add that the owner is a vet so the vehicle sees lots of fields and pastures. The first event is the ABS and brake light come on. Then the door locks cycle.Then the reduced power me...
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2004 Chevrolet Silverado 2500 HD 6.0L planetary VIN: 1GCHK23U24
Posting on my personal vehicle I recently purchased this truck cheap knowing it had a whine in first gear. The noise goes away as soon as it shifts to second. The noise is a whine with some scrapping metal sound mixed in. I see there is a TSB for checking the...
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2007 Chevrolet Express 2500 6.0L cluster VIN: 1GCFH15Z37
We hope someone has seen this before,van came in for no cluster lites.We have radio lites and gear selector lites and we can dim them as well.We have gone through the diagnosis and seems to have led us to the headlite switch.We installed a new one but it still...
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2008 Chevrolet Impala LS 3.5L air bag light VIN: 2G1WB55K38
vehicle cames into the my shop with an instrument cluster that when full had a correct gauge reading but showed incorrect miles to empty. pulled instrument cluster and called dealership with number off the back of cluster, asked at that time if cluster needed ...
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1995 Geo Prizm LSi 1.8L Cuts out, Misfire VIN: 1Y1SK5287S
hi to all out there. we have a nightmare here. we had a good customers geo towed in because it died & would not re-start. after testing we found the coil bad & just replaced the coil/cap & rotor. the vehicle started fine & idled well. the tech. drove the car &...
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1996 GMC Savana 1500 5.7L Interior Power(lights, seats etc.) VIN: 1GBFG15R5T
Looking for wiring diagrams for aftermarket conversions for interior lighting, seats and fold out beds for GMC or Chevrolet Conversion Vans. Preferably Cobra Conversion from Advantage Enterprises
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1998 GMC Jimmy SLE 4.3L No Start VIN: 1GKDT13W8W
First thank you to anyone who replies. I have seen this vehicle 3 times for a crank and no start. Everytime it is at the shop it starts perfectly. I have been able to retrieve one code but it is so intermitant that I am not able to run the diagnostic test prop... Trouble codes: B2958
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2007 GMC Sierra 2500 HD SLT 6.6L Starter, VIN: 1GTHK29D77
vehicle started out internimtantly loosing power and stalling, and then when i got in my bay was check out wiggling wires got to pcm and stalled and hassnt restated yet, no codes have data and can control out puts through scanner bur wont start san jump starte...
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1989 Oldsmobile Cutlass Ciera 3.3L Cuts out VIN: 1G3AJ51N6K
this engine intermittantly, under load, shuts off completely just like you turned off the key. restarts immediately. after the above repairs, car was driven 350 miles before it did it again. customer says it then cut out more and more frequently before he retu...
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1990 Oldsmobile Cutlass Cruiser SL 3.3L Cuts out, Stall VIN: 1G3AM84N8L
I have this olds that originally came in for lack of power with 127k on it. replaced o/e plugs wires and fuel filter and ran great, now 3 weeks later its back and will idle great when cold and try to give it gas and it dies. when it gets warm it wont idle or r...
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1998 Oldsmobile 88 Royale 3.8L Cuts out, Stall, MIL Lamp on VIN: 1G3HN52K9W
Hi everyone hope you have some ideas. This car was setting for a little over a year. Every once in a great while cel comes on with p0336, sometimes it will die starting right back up, sometimes it will cut out. I have driven car with lab scope on 3x and 18x f... Trouble codes: P0336 (18x ref signal)
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1996 Pontiac Sunfire SE 2.2L Misfire, MIL Lamp on VIN: 1G2JB1247T
missfire on cylinder one all the time customer was driving car two weeks ago and came out of nowere Trouble codes: P0301 (missfire on one)
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2000 Pontiac Grand Am GT 3.4L Misfire, MIL Lamp on VIN: 1G2NW12E9Y
Hello, thanks in advance! I starting working on this following alot of repairs. Random Misfire @ 2100-2600 RPMs, in any gear of the transmission. normally occurs at highway speeds. Won't misfire accept when driving not even when under a load in shop. This unit... Trouble codes: P0300
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2006 Saturn Vue 3.5L Surge VIN: 5GZCZ63446
Hello all, thank you in advance. This is my personal vehicle and here is my problem. While normal cruising between 30 - 40 MPH the RPM's jump around like it's looking for a gear to go to. The transmission is fine, though. It is not hunting for a gear, rather i...
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Fixes & Summaries for GM
Fix/Summary Answers
2002 Buick LeSabre Custom 3.8L battery VIN: 1G4HP54K92
Hellow all, as it turns out my some data was incorrect for rear seat cushion r&r to service the battery. They said to push back (which is pretty much impossible the way floor and seat are made)and lift. The "fix" was to just do a quick hard jerk on the seat cu...
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1997 Cadillac DeVille Concours 4.6L No Start, NO SPARK VIN: 1G6KF5496V
We got spark. Found that there was a corroded fuse for the ignition circuit to the ignition module that failed voltage drop testing and cleaned and retested Ok and now has spark and runs great.
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1989 Chevrolet V1500 Suburban Silverado 5.7L MIL Lamp on VIN: 1GNEV16K4K
I appreciate all the replies that I have recieved on this particular problem unfortunately the customer has not been back in over a month to do any further repairs and I am forced to close this without a fix.Thanks again for everyone that replied Trouble codes: 43 (esc problem), 44 (lean exhaust).
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1997 Chevrolet Blazer 4.3L Poor Idle Quality, Hesitation, Surge, Cuts out, MIL Lamp on, Poor Shift Quality VIN: 1GNDT13W4V
As many of you said there was a short in the system that caused the loss of the 5v ref. it turned out to be in the fuel gauge module under the dash. thanks for the help.
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2000 Chevrolet Silverado 1500 4.3L No Start, ignition module VIN: 1GCEC14W3Y
Hi all--talk about cutting it short!! First off I need to thank Jerry,Edward,Derrick,Spencer,Rick,Ed,Gary,Matt,Miguel and Stephen for their replies. They all had good ideas and procedures for diagnosing this problem. Some of them I had already done and some I ...
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2001 Chevrolet S10 4.3L No Start VIN: 1GCCS19W31
First, I wanna say thanx for all the help. I hooked my Modis up to the ignition system and found 25K at the coil and 10K at the spark plugs. I happened to have a Jimmy here the same year and it's readings were 27K at the coil and 25K at the plugs. Removed t...
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2003 Chevrolet Silverado 2500 6.0L MIL Lamp on VIN: NO VIN IM
thanks for the help .ran a new ground from the module to eng .gm has had a problem withe the ground at the head . Trouble codes: P1518.
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2004 Chevrolet Silverado 2500 HD 6.6L Poor Idle Quality, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1GCHK23204
THANK YOU FOR ALL YOUR HELP WITH THIS ONE. I FOUND A 1 INCH WIDE GROUND STRAP AT THE REAR OF THE DRIVERS HEAD TO THE FIRE WALL WAS CUT IN HALF DUE TO RUBBING ON THE GLOW PLUG MOUNTING BRACKET. PUT A 4 GA. STARTER WIRE WITH SOLDER EYELETS IN IT'S PLACE AND ADDE... Trouble codes: P0202, P0205 (injector curcit fault cyl. 5), P2149 (injector position voltage contron curcit group 2).
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1994 Oldsmobile Cutlass Supreme 3.1L Steering/abs? VIN: 1G3WH55M7R
Well gonna close the book on this one for now, most replies suggested axle, brakes, or wheel bearing locking up. All the things we had already suspected and inspected, but after numerous test drives without experiencing the problem and no other symptoms at all...
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1997 Pontiac Grand Prix GT 3.8L MIL Lamp on VIN: 1G2WP52K5V
I replaced the oxygen sensor again with a test one because customer did not have time to wait for more diagnostics. Customer has not had the light come back on. Sorry for the delay because customer did not get back right away to us. Trouble codes: P1133 (Insuffiecent O2 switching).
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2006 Pontiac Vibe 1.8L trans inop VIN: 5Y2SL65896
Thank you guys for the great feed back. as suspected, the PCM was for a manual trans car. I just got the correct one, plugged it in and drove away. Trouble codes: P0607 (PCM failure).
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