× 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 May 21, 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
1989 Buick Electra Park Avenue 3.8L prolonged crank VIN: 1G4CW54C4K
car has long crank often,sometimes starts right up the first time than the next time it has prolonged crank and will not start. Customer complains of rough idle / coughs intermittenly and dies intermittenly at idle. Tune up parts are good. Any help would be ...
1994 Buick Park Avenue Ultra 3.8L engine top end VIN: 1G4CU5211R
Car came in with blown AC comp seal and noisy supercharger nosecone bearing. Also heard loud clack that appeared to be coming from the supercharger. Clack is intermittent, occurs at idle and just above idle. Clack sounds like a rod snapping and is way too loud...
1995 Buick Skylark Custom 2.3L cooling system VIN: 1G4NV55D5S
all work execpt radiator and heater hose was done at another shop. car came in with stopped up radiator due to stop leak. we replaced the radiator and heater hose filled the system and road tested. with the a/c on at highway speed we had about 200 degrees f. w...
1998 Buick Park Avenue 3.8L frt suspension VIN: 1G4CU52116
this park ave ultra makes a thump noise over bumps in frt end,we replaced the sway bar links,drove with the sway bar disconnected noise still there,we tightened all the frt suspension bolts,checked ball joints,inner&outer tie rod ends,lower control arms,checke...
1990 Cadillac Eldorado 4.5L turn signal VIN: 1G6EL1335L
The turn signal indicator in the instrument cluster lights in the direction that the turn signals are applied but it only flickers instead of blinking in time with the signals and chime. the signals and chime are working properly. We tried a new module. I am s...
1997 Cadillac Seville STS 4.6L cooling system VIN: 1G6KY5290V
Hello Caddy Super Techs. I'm sure you can help. At idle and and in town driving this car runs at normal temprature (205-210 deg f)at water outlet and (135-165) at radiator center. At highway speed 65-70 mph, the temp will rapidly increase into the red. The act...
1988 Chevrolet C1500 Cheyenne 5.7L Cuts out, Stall, BUCKING SURGE VIN: 2GCDC19K7J
ON the first test drive I noticed 3 concerns: 1st: BUCKING under light acceleration from slow speed 2nd: CUTS OUT at cruse (like the key was switched off-only for 1 to 3 seconds then comes back to life) 3rd: STALL on decel & at idle in gear. I have checked: M... Trouble codes: 45 (RICH EXHAUST memory has not reset)
1995 Chevrolet Astro CL 4.3L Poor Idle Quality, Stall VIN: 1GNDM19W2S
hello to everyone. this astro came into the shop with the customer complaining of intermittant rough running and stalling. also, the CEL has illuminated a couple of times. I connected the scanner and there are no DTC in computer. I have driven vehicle 58 miles...
1995 Chevrolet Monte Carlo Z34 3.4L timing belt VIN: 2G1WX12X65
we are getting premature wear on the outside of the timing belt
1996 Chevrolet C3500 7.4L Misfire
Got a ... big block with a lean misfire to say the least. Ill try to make this short as possible, cause Ive spent lots of time on this truck. To start out this is a fleet vehicle that is inside a steel plant and it never goes over 25 to 30 mph. Truck came to s...
1997 Chevrolet K2500 Cheyenne 5.7L Misfire VIN: 1GCGK29RXV
Pickup came in with a miss complaint at around 2500rpm. will not miss at idle or when brake torqueing. Customer has replaced plugs, wires cap rotor and o2 sensors. Scanned computer no codes. misfire monitor turned off so can not get misfire info. Data stream s...
2000 Chevrolet Silverado 2500 6.0L Clock VIN: 1GCGK29UXY
Hello all, my customer will have to reset his clock every morning. It will start and come on then shortly later will start blinking 1:00 he then resets it and all is fine. He will leave it sit at work for 9- 10 hours and no problem. Also after we replaced the ...
2002 Chevrolet Suburban 1500 LS 5.3L Misfire, MIL Lamp on VIN: 3GNFK16Z22
This engine misfires on the even # bank only. Misfire counts are extremely high. the odd # bank is fine. The engine idles ok. The misfires happen when throttle is slightly depreseed begining about 1000 rpm. the truck will not run much over 35mph. Injector pres... Trouble codes: P0300
2000 GMC Savana 3500 6.5L oil leak VIN: 1GTHG35F5Y
Hey GM techs, Hopefully this is an easy on for you. I need help identifying a sensor/sending unit located in the front right top of engine right behind timing cover. 2 GM dealers, Alldata and Mitchell have offered no help with what it is for. Sensor is threade...
1996 Pontiac Grand Am SE 3.1L Poor Idle Quality, Surge, MIL Lamp on VIN: 1G2NE52MOT
this grand am has an idle problem. it idles at 950-1000 rpm and revs to 3500 on initial press of the accel. desired idle is 675. if i unplug the maf the car will not rev but still idles high with no iac counts. checked for vaccuum leaks but did not find any. p... Trouble codes: 507 (idle control problem), 140 (o2 sens low activity)
1999 Pontiac Grand Prix GTP 3.8L blend door actuators VIN: 1G2WR5213X
When vehicle is first started there is continual noise from either the blend doors or temperature valves cycling. It eventually shuts off after 10 minutes or so but then occasionally starts back up. I noticed that I can sometimes get it to stop by playing arou...
1994 Saturn SL1 1.9L reverse VIN: 1G8ZH5596R
This vehicle will not engage reverse when warm. Engages slowly when cold. Sets code 22. Checked shift solenoid #2 resistance, ok. I can actuate solenoid and hear it clicking. I replaced the valve body and checked the nut under the end cover. All looked ok when...

Fixes & Summaries for GM
Fix/Summary Answers
1985 Buick Electra Park Avenue 3.8L front crank seal VIN: 1G4CW6936F
about an hour after i posted the request the local gm dealer called and said they had located th oe part i was looking for and got it to me next day. there is a replacement seal from the after market that is suppose to fit in place of the orginal rope. i did...
1988 Cadillac DeVille 4.5L master /accum. combo VIN: 1G6CD515XJ
accumulator was replaced before tech help was posted. I have found the cause of the no pressure problem the mechanical part of the pump was no good. after replacing it and bleeding system brakes work good but each time you hit the pedal the red brake light com...
1991 Cadillac DeVille 4.9L window motor VIN: 1G6CD53B1M
Thanks for all the help. The type of regulator that uses the tape does not use the hazardous spring according to replies. After we quit worrying about that and drilled out the rivets the whole job went pretty easily. One thing though, probably every one in the...
2000 Chevrolet Astro 4.3L No Start VIN: 1GNDM19W1Y
First I would like to thank everyone that responded to our request. However, this ended up being one of those problems normal diagnosis would not find. We had two major problems occurring at the same time. First we would loose all spark intermittently. This le...
2001 Chevrolet Express 3500 5.7L high idle VIN: 1GCHG39R01
thanks to all that replied.final fix was to replace tps,found an glitch in sensor when under hood temps.were high(engine cover in place).vehicle has dedicated wiring from pcm and shares no circuits.
1989 Oldsmobile Cutlass Ciera 3.3L rear brake shoes VIN: 1G3AJ51N3K
In the replies, it was suggested to verify proper operation of parking brake cable; age, condition and operation of hoses; verify proper fluid pressure at each wheel cylinder; age and condition of caliper slides; OE brake shoes. When the car came back with the...
1993 Pontiac Grand Am SE 2.3L engine VIN: 1G2NE5439N
after check ol preassure with cams and cam housings removed we pulled the oil pan to check the bottm end . bearings didn't look real bad[not into coppper] but crank was somewaht scored put new pick up screen on pump [debris was in pan] put back together as cus...
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next