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Prev Professional Automotive Repair Technical Discussions for January 2, 2008
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1990 Buick Regal Limited 3.1L Misfire VIN: 2G4WD14T5L
Hi all got home sick and decide to go see the family for the holidays so threw some hand tools a dvom my brick and a Mt2700 in the trunk. Well it's time to leave and a miss developed. Using the mt2700 When I check the spark plug wires I have 1 post on each coi...
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1999 Cadillac Seville STS 4.6L Radio, Electric Windows, Power Locks, ETc VIN: 1G6KY5497X
Hi, Cadillac Techs! I hope someone can give me some ideas of what's wrong with this monster. I have this Seville that came in today, with inop power windows, locks, radio, rear defogger, interior lights, rear blower, and (sometimes) instrument panel. When ever...
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1987 Chevrolet Caprice 5.0L Poor Idle Quality, Hesitation, Surge, Cuts out, MIL Lamp on VIN: 1G1BN51H7H
engine has surge, mil flashes in time with surge. after MUCH diagnostic effort, problem seems to boil down to timing control. timing goes from 4deg atc to 20 btc in time with the surge (i think this a symptom of the problem, not just a result of rpm change). ... Trouble codes: 12 (13 -), 13 (14 -), 14 (15 -), 15 (21 -), 21 (24 -), 24 (testing and results)
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1993 Chevrolet C1500 Suburban 5.7L heater VIN: 1GNEC16KXP
Good morning and happy new year. I have a 93 suburban that came in for no heat. I dont do alot of american vehicles but I figured no heat was no big deal. So far it is making no sense. The first thing that I noticed was that the vehicle was not coming up to te...
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1997 Chevrolet Monte Carlo Z34 3.4L Misfire
I need some direction. I am trying to fiqure out the misfire. The tech that worked on this vehicle is no longer employed. The vehicle came in with the timing belt off. He did a belt, head job and new tensioner. The engine is a DOHC. I have a misfire at idle on... Trouble codes: P0300
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1998 Chevrolet P30 Stepvan 6.5L Oil Pressure VIN: 1GBKP32Y4W
This motor is about 1 year old. Serviced every 3k. Was driving today and oil pressure dropped and fuel pump shut down. Towed to shop where we checked oil pressure mechanically. None. Pulled drive assy and inspected gear and shaft. Ok. Cranked over and checked ...
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2002 Chevrolet Trailblazer LS 4.2L starter VIN: 1GNDT13S72
I HAVE A 2002 CHEVY TRAILBLAZER HERE WITH A INTERM NO CRANK CONDITION.ORIGINALLY THE COMPLAINT WAS VERY INTERM,SO i SEARCHED THE ARCHIVES AND FOUND THAT THE IGN. SWITCH HAS A HIGH FAILURE RATE ON THESE VEHICLES,SO I REPLACED IT(DELCO PART).AFTER A WEEK THE TRU...
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2004 Chevrolet Suburban 1500 LT 5.3L No Start, Stall VIN: 1GNEC16Z74
Customer driving on interstate about 150 miles, engine just shut down and died. Customer noted nothing unusual prior to event. Called Onstar for tow, after waiting about 15 minutes they hit the key and it started. Drove about 25 miles and it died again, this t...
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2004 Chevrolet Silverado 2500 6.0L Differential VIN: 1GCHK24U14
Working on my truck again and I have tore into the rear differential due to having a loose pinion bearing that I found when I was replacing the u-joint. I noticed that I could actually move the yoke up and down slightly. Wasn't much play but should be tight. A...
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1996 GMC Sonoma SLE 2.2L Poor Idle Quality, Stall, no power VIN: 1GTCS1945T
truck has excessive fuel pressure and is running real rich has fouled the plugs, fuel pressure regulator shows to be working no power under acceleration disconnecting cat has no effect on the vehicle
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2000 GMC Savana 2500 5.7L Intake VIN: 1GTFG25R6Y
The only thing worse than working on a problem child van is an owner who is a repair hypochondriac. Add to that the fact that this is a van(everyone knows what bitches they are to work on...), and finish it off with the drive shaft for the carpet pump/blower g...
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1993 Pontiac Grand Am GT 3.3L ck guages & oil level VIN: 1G2NW14N8P
This grand am came in with the check gauges & the low oil level light on. all of the gauges are working correctly and are in the normal range. the engine has been replaced and the replacement engine does not have the low oil sensor in the pan. The connector fo...
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1995 Pontiac Grand Am SE 2.3L antitheft
This is my first request for help.This car has activated the antitheft module. it will turn over and not start and the security light is flashing.I read some where here about resetting it some thing to do with disconnecting the Battery And touching the 2 cable...
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Fixes & Summaries for GM
Fix/Summary Answers
2001 Chevrolet Silverado 2500 HD 6.6L No Start VIN: 1GCHC291X1
Cust has'nt brought truck back, but I recieved alot of good info. Several tech mentioned about the fuel filter adapter itself or the fuel line clamps. I'll look into that if it comes back. Just want to thank everyone for the input. jeff
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2001 Chevrolet Impala 3.4L Starting VIN: 2G1WF52E21
I owe everyone of you huge apology. We had our symptoms crossed. These cars have all kinds of problems that make the starters not go, ours, we thought, was working extra. What we interpreted as the starter re-engaging was actually the stater making a very nast...
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2004 Chevrolet Trailblazer LS 4.2L No/limited four wheel drive VIN: 1GNDT13504
Sorry for the long wait. I got a lot of great advice on this little turd. I finally dropped the transfer case control module down and did some voltage testing. I noticed when I moved the module/harness a bit I lost voltage at encoder signal terminal. I then po...
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2005 Chevrolet Avalanche 1500 LT 5.3L Differential VIN: 3GNEK12Z25
After test driving vehicle many times, each time I tried a different repair. Noticed a different noise, this time coming from the rear of vehicle. Put another technician in the back and verified the noises' location. The problem ended up being the right carrie...
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1996 GMC Jimmy 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKDT13W8T
To all the Tech's that offered the help on this vehicle i thank you very much with all the info looking good i was not sure where to look next so i did some checking on the cpu all injectors looked good all wires ohmed good but i tried a different unit and tha... Trouble codes: P0300.
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2003 GMC Savana 3500 6.0L speedo VIN: IGDGG31V33
Have not yet fixed the speedo problem. However I did find out that the state of California has rules and regulations that, regardless of what the Ferderal standards are, need to be met. California has an Allowable plus or minus 3% difference from gps reading...
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1999 Pontiac Firebird Formula 5.7L loosing oil pressure VIN: 2G2FV22G8X
thxs for replies all- vehicle still here- cust. to pick up after New Years- further testing & retesting- oil pressure was tested at lower spot on engine closer to oil pump- indeed loosing oil pressure at extreme eng load times- but pressure acceptable all othe...
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