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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 14, 2008
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Open Help Requests for GM
Help Request Answers
1986 Buick Regal T-Type 3.8L master cyl VIN: 1G4GK4775G
Hello and thanks in advance for your help! We have a pristine 1986 Buick Grand National with a very spongy brake pedal. Ive seen cars at the showroom that are not as clean as this thing is. App 3 months ago we installed a rebuilt master/booster assembly due to...
1999 Buick Regal LS 3.8L steering VIN: 2G4WB52K0X
hey guys, customer complianed of a squeeking noise that comes and goes. after looking at the car, noticed it needed outer tie rod ends and sway bar endlinks. after making repairs, hearing a bad scraping noise when making right turns. its sounds like the backi...
1992 Chevrolet Lumina 3.1L Stall VIN: 2G1W454T9N
This car came in with an intermittant stalling and highway stumble problem.Somethings shutting the ignition and fuel injectors off momentarily. The car will always start right back up. It might run for 10 mins. or an hour. It will shut off as if you turned the...
1996 Chevrolet Cavalier 2.2L No Start VIN: IGIJC1248T
Hello everybody This cavalier has had fuel pump changed,gas tank changed,wires changed,plugs changed,fuel filter changed from another shop.This car has an exceptional long cranking time before starting,maybe thirty seconds or more.Car runs good after starting ...
1998 Chevrolet Cavalier 2.2L Cooling Systems VIN: 1G1JC524XW
Car came in to my shop with overheating problem,checked and found air in the system,when engine ran for few minutes and on acceleration I found compression going to cooling system,removed the head and found head gasket rotten in few places,had the head resurfa...
1998 Chevrolet K1500 Cheyenne 5.7L Poor Idle Quality, Misfire VIN: 1GCEK19R9W
hey guys, this is actually on two vehicles I am pulling out my hair. a random misfire keeps appearing. truck sits until cold and startup is smooth. run it for 5 miles and get it hot. let sit for 1-2 hours and starts up with a misfire. the misfire monitor show... Trouble codes: P0300, P0302, P0305, P0307
1999 Chevrolet Silverado 1500 4.8L No Start, Poor Idle Quality, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GCEC19V1X
This truck is eating fuel pumps at a rate of 1 every oil change... Ive checked every wire in the circuit... we started with a aftermarket pump and it blew and warrantied thinking it was a defective unit...truck came back again and we installed a dealer pump...... Trouble codes: P0300
2000 Chevrolet Astro 4.3L fuel gauge,turnsignals,speedometer VIN: 1GNEL19W4Y
OK we have a 2000 Chev Astro van with 98k miles on it and the problem we are having is that the turn lights, gauges , and speedometer will randomly cut out as you drive. I have chased all the dash wiring and found no breaks or loose connections. Used a scan to...
2004 Chevrolet Malibu LS 3.5L trunk release VIN: 1G1ZT54854
Got an interesting one here! This car has a problem where the trunk lid will open without the trunk release button being pushed. This can happen parked or while driving and it does it fairly often. I scanned for codes and found B3265-[...](Trunk release out...
2005 Chevrolet Colorado Sport 2.8L blower motor resistor VIN: 1GCCS14824
replaced res. in feb. lasted 5 months,replaced in july,lasted 1 month replaced again yesterday lasted 2 hrs. blower motor works fine on high. is the blower motor bad or what?
2008 Chevrolet Silverado 1500 WT 5.3L 4x4 VIN: 1GCEK19048
This is for all you GM guys out there we run all Chevrolet 4x4 pickups the 2008 we have all have Automatic Transfer Cases when going in and out of fields the do not want to come out of 4x4 some times no way to tell when there going to work or not just happens ...
1998 GMC C1500 Sierra SL 4.3L MIL Lamp on, no start VIN: 1GCFG15W6W
I have this 1998 GMC Van 4.3L. This van has a no start. Vehicle came in for a no start. It had a code 1351 Ignition Coil Control Circuit High Voltage". I I checked for crank, cam, sig, and icm siganl and notice it did not have any power. I wiggle the wire and ... Trouble codes: 1351 (Ignition Coil Control Circuit High Voltage.)
2000 GMC Savana 2500 5.0L 2-3 shift VIN: 1GNDG24MTY
This vehicle had bad rough run last week and many codes. Split, waterfilled pcm was the culprit. New PCM was flashed and replaced. This week customer complains of lack of power. When vehicle shifts from 2-3 vehicle goes into limpin and remains in 3rd gear. Nex...
1999 Oldsmobile Silhouette GL 3.4L no compression VIN: 1GCDLHPOEG
car came in from diff. shop cyl # 5 75 p.s.i comp. cyl #6 no compression, all the rest 165 p.s.i customer said last mechanic told him yhe heads were resurfaced to much and valves were always hanging open because the valve lenght was wrong. i send the heads to ...
1996 Saturn SC2 1.9L Tran's ? VIN: 1G8ZG1272T
This car runs and drives fine except when you are under a real light cruise or decelerating then there is a rather distinct knocking sound coming from up front. I can't reproduce the noise on the lift and I would have sworn it was an inner cv joint about to fa...

Fixes & Summaries for GM
Fix/Summary Answers
2000 Buick LeSabre Custom 3.8L cat converter rattle VIN: 1G4HP54KXY
All were correct, warranty starts when vehicle is sold. However getting dealer to honor warranty is a different story. Send customer ( my 65 year old mother) back to the dealer for repairs,Guess what, dealer claims car had engine miss and mil was on. Dealer sa...
2002 Cadillac Seville SLS 4.6L mil lamp never on VIN: 1G6KS12YGE
thank you all for replying too my help request.pulling the upper dash to get the instrument cluster out seems to be the answer.unfortunately the car never came back for me too finish diag.Definetly not the first place to go when checking mil light never on Trouble codes: P0410.
1996 Chevrolet Blazer 4.3L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1GNDT13W5T
so basicly after a lot of DI and dealing with the costomer budjet i decided to replace the injector assy with an updated system from gm and truck runs great!!! injectors must have had some kind of junk inthem just giving enough fuel for a nice idle but would ... Trouble codes: P0151, P0133.
2000 Chevrolet Express 3500 5.7L Poor Idle Quality, Misfire VIN: 1GCHG39R9Y
This one is fixed and down the road. After reading the replies and searching the archives,I decided to add propane to the #1 bank and watch for a change in fuel trims and mis-fires.I accomplished this through the PCV grommet,which is in close proximity to #7...
2002 Chevrolet Tracker LT 2.5L right cv axle VIN: 2CNBJ634X2
Thanks for the information, the vehicle was being properly towed and frame was straight. Not positive if fixed yet until the customer tows a few times, but I believe that the hubs were engaging causing this problem. No manual hubs available for newer Trackers ...
2004 Chevrolet Malibu 3.5L Blower Motor VIN: 1G1Z854U54
The fix was replacement of the HVAC Control Module . Most people replied that the common fix was the blower motor module . How it works is that the blower motor module supplies 5 volts to the HVAC module on the "blower motor request signal" wire and the hvac m...
2007 Chevrolet Impala LS 3.9L Airbag VIN: 2G1WS55R77
Ok i had to send this one to the dealer for the fix due to the fact that there was a prelim TSB on this problem and GM tech line had to be contacted to get the rest of the needed info. Thanks to scott from Ohio for the info on this PIC#4924 that refrenced to i...
1994 Oldsmobile 88 Royale 3.8L MIL Lamp on VIN: 1G3HN52L1R
I have not had a chance to do anymore testing on the vehicle but thanks to everybody that responded to help me out with my neighbors car,but I will post an update when I do finish her car. Trouble codes: P1406 (EGR pintle position circuit).
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