× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 30, 2004
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Open Help Requests for GM
Help Request Answers
1996 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KF529TU
The customer has had car to dealer approx 6 times in the [...] to fix this. has codes pc1350 and pc1375 always runs fine,have tested the crank senslrs and the cam sensor,on a lab scope and is fine what have i missing,thanks jim
1998 Cadillac DeVille 4.6L Poor Fuel Economy, MIL Lamp on VIN: 1G6KD54YXW
Hello to all,I hope there is someone out there who can help. This is my wife's car and she is threatening to trade it in if I don't get it fixed.On 7/10/04 the ses light came on, I hooked up my Tech II and retrived code p0154. So I scaned the o2 sensors and b1... Trouble codes: P0154 (lack of o2 switches b2s1), P0151 (o2 low voltage b2s1)
1979 Chevrolet LUV 1.8L voltage regulator VIN: CLN1498297
Vehicle came in with a complaint of won't idle and charge light on. We found that the external regulator was blown wide open and alt was charging in excess of 16 volts. We changed the regulator, vehicle would idle and max output was 14.5 volts. Released vehicl...
1986 Chevrolet Corvette 5.7L low coolant warning VIN: 1G1YY6786G
I have a new [coolant low warning module] the problem is I need to know its location.
1991 Chevrolet Corsica LT 3.1L Stall VIN: 1G1LT53T4M
car stalls on acceleration from stop.(tip in) doesnt die on freeway. doesnt stall accelerating on freeway.
1992 Chevrolet Caprice 5.0L no power VIN: 1G1BL83E8N
need location of timing connector to disconnect and check timing.mitchell says it is near distributor wire harness or right shock tower.i can not seem to locate inside split loom anywhere under hood and also checked near ecm and do not see it.if anyone can tel...
1994 Chevrolet S10 LS 4.3L No Start VIN: 1GCCS19W4R
the truck does not want to start cold until the key has been cycled a few times and a moderately long crank. pressure starts out at 50 usually and goes up with each cycle to a max of 60. have been told these are pressure critical.put on a new filter(fuel)volum...
1995 Chevrolet C1500 Suburban 5.7L pull to the left VIN: 1GNEC16K8S
this truck has a pull to the left under hard braking. when braking normally all is o.k.. we have installed new front calipers, pads, brake hoses, flushed out the entire brake system, tested master cylinder for pressure differance which is normal. the rear brak...
1995 Chevrolet K2500 Suburban 6.5L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy VIN: 1GNGK26FXS
Truck starts very hard when cold, has very heavy smoke. Runs with good power, but has a miss. Trouble codes: 13 (engine shut off driver fault), 48 (intake air temp sensor circuit high), 62 (turbo sensor circuit low), 91 (cyl balance failure 1 cyl)
1997 Chevrolet K1500 Cheyenne 5.7L ecm-b fuse VIN: 2GCEK19R4V
cust replaced alternator about two weeks ago. cust problem started about one week after that. haven't tried disconnecting alternator, due not sure what will happen to computer on the vech. Have talked to local techs. Said that the ing. conrol module could be...
2000 Chevrolet Blazer LS 4.3L whole vehicle VIN: 1GKDT13W2Y
HI, We have been after this vibration which seems to come from the front floor area, is present in the steering wheel a bit, and generally all around. It occurs at 65 to 70 the strongest. We have been over the vehicle from end to end and can not find the cause...
1991 Geo Prizm 1.6L internal VIN: 1Y1SK4569M
This car came in with the the front wheels locking up and bearing noise coming fom inside the transmission. Replaced it with a used tranny from a junk yard. new filter and trans fluid. Three days later, it gets towed in with fluid pouring out the front of it a...
1994 Geo Metro 1.0L No Start VIN: 2C1MR2466R
has code 41 ignition signal. has good spark always but after a few pulses the injector pulse drops out.injector will pulse if it is grounded at ecm connector.cust had spare ecm on back seat tried with no success. is there some common problem? thanks in advance... Trouble codes: 41 (ignition signal)
1996 GMC Jimmy 4.3L hot VIN: 1GNDT13WXT
Hey everybody Truck came in over heating, head gasket where gone, replaced head gasket, thermostate and flush numerous of times. Customer took truck over heated on high way. checked over again found heater core still blocked, flushed heater core, remove rad...
1997 GMC K1500 Sierra SL 5.7L Cuts out, Stall, Misfire, backfire through exh VIN: 1GTEK19R2V
This one only gives us 20 minutes or less to diag. It will straighten up & run well after a 10 min run and only after It has set overnight. If it sits all day it is ok. Only an overnight sit will the symptoms occur as follows: When taking off it will backfire ...
1997 GMC Sonoma SLE 4.3L No Start VIN: 1GTCS19X3V
I have a problem with the truck not starting up and running after a 12 hour no run condition.I have check fuel pressure and volumn. All within Alldata specs.The truck has fire and and fuel pressure.Cycle the key and pressure comes right up and holds pressure.I...
1992 Oldsmobile Achieva S 2.3L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, Misfire VIN: 1G3NL1436N
Very bad child. Has a stumble, hesitation, misfire after closed loop. Only after power brake in gear. Will occasionally stumble in park at idle. When it stumbles in park, if you try to rev engine, will drop and stall. Evertything on scan tool looks normal. Rep...
1995 Oldsmobile Aurora 4.0L Poor Idle Quality VIN: 1G3GR62C3S
This olds is eating my lunch. The stepper motor will hunt when returning from anything off idle. The pcm recognizes when it is on or off idle. It will retract and then go out and then re-retract. I beleive the motor is ok. It also wont step it open for the cra...
1999 Pontiac Grand Prix GT 3.8L Hesitation VIN: 1G2WP52K7X
Good Day I have posted this car before and thought we had fixed it twice but the young Lady that drives it says nothing has changed.She waited 3 weeks to get back to us each time we've worked on it. The biggest problem is we can drive the living crap out of ...

Fixes & Summaries for GM
Fix/Summary Answers
1998 Buick Century Custom 3.1L Misfire, MIL Lamp on VIN: 2G4WS52M4W
First Off, I want to thank everyone who replied! Here's what was found out the hard way! This car only misfired on # 4 or the # 6 cylinder for the first few seconds after standing over night. After reading all the replies I started out with the Scan tool hooke... Trouble codes: P0300.
1996 Cadillac Fleetwood 5.7L p/s VIN: 1G6DW52P1T
Mental slap on the forehead-whap! I was so looking for the exotic I overlooked the basics. Daniel [...] hit it on the head when he suggested the harmonic balancer. New balancer, noise and car gone.
1992 Chevrolet Lumina Euro 3.1L speedometer VIN: 2G1WN54T3N
My thanks to the four people who replied to my request and a special thanks to Jeffery from Indiana who helped me get my head on straight. While I still didn't understand the voltage requirements of the diagnostic chart Jeffery stated ' CHECK THE BASICS' which...
1995 Chevrolet C-70 366CID Fuel Pressure VIN: 1GBJ6H1P5S
Thank you for the help, the fuel pressure is ok. We have not fixed this truck yet. It still has some computer control issues we are addressing. Thank You again for all the help. Larry
1995 Chevrolet K1500 5.7L Starting VIN: 2GCEK19K7S
I replaced the postive battery cable from the battery to the starter and evey thing worked fine . thanks guys, Randy
1999 Chevrolet Silverado 1500 5.3L AC Belt VIN: 2GCEC19T4X
Thanks for all the help with this problem,since this problem didn't happen but every 2000 miles the customer decided just to keep on replacing belts for now rather than having to replace the compressor.less cost.
2002 Chevrolet Cavalier LS 2.2L brakes VIN: 1G1JF52462
The shoes and drums were replaced, the drums were too out of round and oversized to be turned. thanks for your help
1989 GMC Safari 4.3L No Start VIN: 1GKDM15Z6L
Closing a Previous Help Request GM-Drive: FIX 89 GMC Safari, No-start --- --- Verifying Your Closing Message Please verify the message below, and make sure your closing appears as you would like it to appear. If you made any typos or other mistakes, press ...
1998 GMC Jimmy Envoy 4.3L 2-3 shift VIN: 1GKDT13W6W
Hello all. Sorry I could not provide more information on a repair for this one. Customer decided to trade in vehicle as is. Thank you for all of your help!
1999 GMC K1500 Suburban SLE 5.7L No Start VIN: 1GKFK16R4X
Thanks for all your repies. Most said my preassure was not enough. I dead headed the preassure at the fuel filter and still only got 20 psi. Talked with customer and he took the truck to where he had the fuel pump replaced at and they warrantied the pump and n... Trouble codes: P0300 (random misfire), P0304 (cyl 4 misfire).
1998 Saturn SW2 1.9L No Engagement Reverse VIN: 1G82K8272W
First of all I want to thank all who replied 7 total. Most of the replies pointed to vb. The others pointed to assembly errors. This one was an assembly error, (twice) the 15/16 nut , the one under the side cover, was tightened to tight so the reverse dog clut...
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next