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Prev Professional Automotive Repair Technical Discussions for January 10, 2007
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Open Help Requests for GM
Help Request Answers
1988 Cadillac DeVille 4.5L Blower motor VIN: 1G6CD5153J
Let me start by saying this is not your typical Cadillac blower problem. With that being said, on with the story. This whole nightmare started out with the blower motor working intermittently. I found the Connector for the blower motor was melted and not fitti...
1986 Chevrolet C10 Custom 5.0L Front brakes VIN: 2GCDC14H0G
Hi all, this 1/2 ton will pull to the right when braking. The calipers are new, as is the LF brake hose. You can feel it on the steering wheel. It's not the rear, as it will still pull when the rear brakes are disabled. But, when you back up, it seems to go st...
1989 Chevrolet S10 4.3L Excessive Emissions, Poor Fuel Economy VIN: 1GCDT19Z8K
Hello to all, you try to talk people out of tring to fix these old wore out trucks but they like the truck.. Came in rough running, wires burnt and two holes not firing, fuel filter plugged, proformed tune, hitting on all but rough idle, test and found bleedin... Trouble codes: 32 (egr problem)
1990 Chevrolet Beretta GTZ 2.3L timing chain VIN: 1G1LZ14A0L
Hello group, thankyou in advance for any help provided. This Beretta came to me from another shop. History is, they performed a valve job. Ran the vehicle, next morning would crank and not start. They threw several parts at it and gave up. I received the vehi...
1994 Chevrolet Cavalier RS 2.2L tensioner VIN: 161JC1446R
Help, Gang!! This Cavalier is kicking my butt!! I know this shouldn't be rocket science, but we'd sure like to LAUNCH this car!!! Car came here in October with a chewed up belt & a tensioner at a slight angle. We put in a new NAPA (Gates) tensioner and belt on...
1996 Chevrolet C1500 5.0L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 1GCEC14M8T
Replaced all 3 O2 sensors.Plug wires,rotor cap.Light still on idles rough.Light will flash 58 times.Then steady on.Any help would be greatly appreciated. Trouble codes: P0172, P0175, P0300
1996 Chevrolet Cavalier 2.2L Cooling Systems VIN: 1G1JC124OT
good evening. customer brought vehicle in due to overheating.he had installed a new thermostat, but not sure of the bleeding procedure.once in the the shop we checked for coolant leaks, water pump operation, restrictions, cooling system for head gasket problem...
1999 Chevrolet Silverado 2500 6.0L oil pressure VIN: 1GCGK29U5X
This VIN number is pretty close but may not be exact because the truck is not here. The 8th & 9th characters may be off. Other than that, it's a 6.0. 'Nuff said. The main complaint is that low oil pressure turns on the "check guages" light, according to my c...
2002 Chevrolet Trailblazer LS 4.2L Mechanical VIN: 1GNDT13S82
hey guys, just had a customer show up with this engine knock, sounds just like a rod bearing when in drive and under load, but heres the catch, the noise is not there when I try it in reverse. In park or neutral you hear a light clicking, when accelarating it ...
2003 Chevrolet Corvette 5.7L MIL Lamp on VIN: 1G1432G935
cust states after going throught puddle check engine light on. test p0416 air pump. test find seized. replace air pump blow lines out reinstall clear codes run ok. cust left came back 3 days later light back on. teat same p0416. read diag perform inspection al... Trouble codes: P0416
2003 Chevrolet Avalanche 1500 North Face 5.3L four wheel drive VIN: 3GNEK13T53
This vehicle has a noise when making turns left or right with the 4x4 on in high postion. Does not make any noise at all while in 2wd. Does not make noise when in 4x4 high while driving straight. It does feel like it binds a little. 4x4 controls all work, no c...
2004 Chevrolet Suburban 1500 Z71 5.3L loss of monitors VIN: 1GNFK16Z54
The truck will run all monitors on drive cycle run, as soon as you shut truck off i lose half of my readiness monitors and will not pass our si. lost monitors are h02, 02 and catalyst. thank you for your time Dale.
1997 GMC Sonoma SLE 4.3L unkown VIN: 1GTCS19X8V
Please help. This truck belongs to one of our better customers and we have serviced it for years. Problem is that while driving at about 45 to 50mph there is this harmonic type noise that rumbles thru out the cab. This noise is intermiitant and can be duplicat...
2004 GMC Envoy XL SLE 4.2L Speedometer VIN: 1GKET16P84
The Speedometer is stuck between 85 and 100 MPH. I can get speed data on the scan tool. There are no codes but didn't expect any. Before I tear into this dash is there anything that I can do to fix this problem? I checked for tech bulletins and such with no he...
1992 Pontiac Grand Prix SE 3.1L No Start VIN: 1G2WJ14T3N
the car will not start below 45 degrees on its own,if you give it one shot of carb. cleaner in upper intake vacum port and it will start right up.scanner shows temp sensor normal reading,fuel pressure 35lbs.,injector pulse good ,good spark on all 6 plugs. have...
1998 Pontiac Firebird Firehawk 5.7L MIL Lamp on VIN: 2G2FV22G4W
We recently replaced the air (smog) pump on this vehicle because the old one was locked up. We replaced it with a new GM part. Since then it has intermittantely been setting a P1415 code which is a failure on the bank 1 (driver side). The pcm looks for a chang... Trouble codes: P1415 (secondary air injection bank one malfunction)
1999 Pontiac Grand Am SE 2.4L flex plate VIN: 1G2NE52TOX
flywheel broken again.has anyone experienced repeat failure with flex plates with this engine.
2005 Pontiac Grand Prix GT 3.8L Air bag VIN: 2G2WS52265
OK. This is one of those nightmare, just came from the body shop kind of cars. This car came in with the air bag light on. Retrieved code 103(front impact sensor performance). The body shop had already replaced the connector due to damage, so the assumption w...

Fixes & Summaries for GM
Fix/Summary Answers
1995 Chevrolet Blazer 4.3L Poor Idle Quality, Surge, MIL Lamp on VIN: 1GNDT13WXS
Thank you to all fellow techs that replied. To fix this vehicle I followed the advise of most of you. I cleaned the egr passages w/injector cleaner -- let it dry for about 1 hour -- started vehicle momentarily w/EGR off -- all kinda of deposits came out-- then... Trouble codes: P1406 (egr pintle stuck open).
1999 Chevrolet K2500 Suburban 7.4L Poor Idle Quality, Misfire VIN: 3GKGK2GJ0X
Sorry about taking so long to close this one out. Got back from the Holidays and had work backed up. Well Brent hit it on the nose. I did try to look at the fuel pressure regulator, but didn't see anything wrong with it. I had a fuel pressure gauge hooked up t...
1997 Geo Metro LSi 1.3L Mechanical VIN: 2C1MR2296V
thanx for the replies, it was a bit of a hassle to transfer the parts but it started on the first crank and ran smooth, thanx againfor the help!!
1999 Oldsmobile Alero GLS 3.4L Long crank time VIN: 1G3NF52E9X
Hi and thanks to all how read and responded to my cry for help. I had prevesly checked the fule preser regulater as most of your replies had said to check but i did recheck it and it was fine and the car would hold good fule presher I also had a reply saying t...
1996 Pontiac Firebird Formula 5.7L Cuts out, Stall, DIES HOT VIN: 2G2FV22P3T
New opti spark ignition module cured problem, autozone customer supplied parts on both assemblies. make of it what u will.
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