× 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 June 10, 2010
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
1990 Buick Skylark 2.5L No spark or injector pulse VIN: 1G4NV54U3L
Heres one that has me pulling my hair out. I have this 90 Skylark with the 2.5. It was towed in with a no start and the car half apart. (dont ya love these jobs) The customers son tried fixing it. He changed DIS Ignition Module, Crank Sensor, 1 Used coil and a...
1995 Buick Century Custom 3.1L No Start, Hesitation, Stall, MIL Lamp on VIN: 1G4AG55MXS
Goodmorning everyone!...well heres my problem child for the past 2 days. 2 weeks ago I had repalced both head gaskets and upper and lower intake gaskets at the same time. This vehicle came from another shop that said that it was hydro locked and had a bad head... Trouble codes: P0321, P0134, P0342, P1650, P1640, P1530
1996 Chevrolet Monte Carlo Z34 3.4L Parking Lights, Tail Lights, and Instrument Panel VIN: 2G1WX12X5T
I have a Monte Carlo here that has headlights that come on, brake lights work, but no tail lights, cluster does not light up, and front parking lights do not come on, unless using a turn signal or hazards. Really have no idea where to start, may be just a grou...
1997 Chevrolet Lumina 3.1L steering rack VIN: 2G1WL52M5V
car came in for hard steering. disconnect tie rods and found stuts would not turn , replaced siezed bearings, now we have a hard or binding issue when turning to the right. returns to the left normal. suspect the rack but just wanted some input if any one has ...
2000 Chevrolet Blazer LS 4.3L misfire VIN: 1GNCT18WXY
The vehicle will stumble,misfire at 1500 rpm and will not clear.Vehicle has codes p0420, p0300. cat plugs and wires all been replaced.Vehicle has developed small exhaust leak. I assume that is the p0420 code.the misfire cannot be determined.
2000 Chevrolet K2500 5.7L Abs VIN: 1GCGK29R4Y
Truck came to me after another shop replaced master cylinder due to low brake pedal in 0/08 at 81,511 miles. I bled the system & pedal was good. Truck returned 1/09 @ 82,414 miles & on 5/09 @ 83,382 for same problem. R/F wheeel always has air, nowhere else. No...
2003 Chevrolet Tahoe LT 5.3L starter,turn signal VIN: 1GNEC13Z33
Vehicle was towed in,starter would not engage.Had code P0540 for MIL light and P0654 for engine speed,codes don't appear until fuse blows,customer noticed tach twitching,and A/C not blowing cold.A/C clutch relay,MIL light,turn signal switch,neuteral safety swi...
2003 Chevrolet Express 3500 6.0L No Start, Stall VIN: 1GTHG35U43
This van was towed in after it sputtered and died going down the road and would not restart. There is no fuel pump prime when you turn the key on. No security light on dash at all even on bulb check. after setting all night it started and died now nothing. The...
2005 Chevrolet Tahoe LT 5.3L starter VIN: 1GNEC13T65
new vehicle to us. has anyone experienced an earyl starting condition? starter on this vehicle operates when the ignition key is in the "on" position.
2005 Chevrolet Tahoe LT 5.3L blend door VIN: 1GNEC13T45
Thanks for any help on this. The drivers side a/c will go to hot when driving at times. The lower blend door actuator has been replaced. This will only happen once every week or two. Customer says they can shut car off it will work normal until it happens agai...
2006 Chevrolet Malibu LS 2.2L Engine Coolant Tempreture sensor VIN: 1G1ZT51F56
Hey iATN, im having some real issues with the cooling system on this. the car recently came with a P0128 (Coolant t-stat below t-stat regulating tempreture); but as my repair history shows that i had already changed the ECT and t-stat. the symtoms are that the...
2009 Chevrolet Impala LS 3.9L shift indicator off VIN: 2G1WS57M39
Shift indicator outer lite won't light up, trans starts out in high gear,8k miles,scan tool shows "in gear" park /nut when shifting,fuses ok.Thans Techs!
1995 GMC Safari 4.3L water pump VIN: 1GKDM19W0S
looking for an answer as to why water pump back cover keeps pitting and leaking. replacing water pump for 3rd time in 15 months each times leaks through backcover of water pump at bottom of cover. has multilbe pits in cover. Thinking possible electrolrtes but ...
2005 GMC Envoy XL SLT 5.3L transfer case VIN: 1GKFK16Z75
When taking off from a stop, loud tinny pop corn sound from under vehicle, constant noise. No power loss, No codes, Truck drives fine. Checked u-joints - bearings - cv joints - brakes. When turning driveshaft by hand slight noise from inside transfer case. Ver...
2006 Other GM coverall van 6.0L No Start VIN: 5B4KPD2U36
check for crank signal when cranking. have no signal, no RPM's... check 12V reference circuit and low reference circuit, both ok. check for continuity on 3 wires in ckp circuit to pcm, ok. remove ckp sensor, inspect reluctor ring through hole in side of block,... Trouble codes: P0315 (CKP System Variation not learned)
2001 Pontiac Aztek 3.4L Windows,Locks,Body Control VIN: 3G7DB03E31
I have an indian eating my lunch.came in on hook-repo from local car lot.owner says she was using 1 gal antifreeze a day. Well intake gasket shot,head gasket blown,engine knocking.r&r engine.now is the kicker.no radio,power windows,locks,and can't take out of ...

Fixes & Summaries for GM
Fix/Summary Answers
2000 Buick Regal LS 3.8L low oil light VIN: 2G4WB52K7Y
The wire about 2 inches from the low level switch was broken. It was covered up by the plastic loom which has to be opened or pull the wires thru to find the problem. The wires are extremely thin. I thank everyone for there responses and they were helpful. ...
1995 Chevrolet C1500 Suburban 5.7L Surge, Stall VIN: 1GNFK16KOS
Hello everyone and thanks you for all your help. The customer ended up returning the vehicle to our shop after spending 500.00 they installed a TBI unit and a new IAC at the other shop where he had the fuel pump installed and the problem is still not solved bu...
1997 Chevrolet Corvette 5.7L Long hot crank VIN: 1G1YY3180H
The Vette came in yesterday and by replacing the short fuel line with a tee to insert a fuel pressure gauge into the fuel circuit where iI could isolate which side of the system that was loosing fuel pressure when the engine was shut down. The interesting thi...
2001 Chevrolet Silverado 2500 HD 6.6L White smoke VIN: 1GCHK231X1
THANKS to all who took time to read and respond. Based on all info we received, the fuel injectors were the most likely cause of failure. History on this vehicle showed replacement of these injectors and injector pump 2 times already. Our customer has decided ...
2005 Chevrolet Corvette 6.0L Stall VIN: 1G1YY34U95
Thanks again for all the help. It turns out it was just a matter of resetting all the modules using the tech II.
2007 Chevrolet Silverado 2500 HD Classic LT 6.6L MIL Lamp on, No power! VIN: 1GCHK29D77
thanks to everyone that took the time to reply! believe it or not I found that the fuel filter WAS the issue. It was a WIX fuel filter that we had installed due to an AC Delco not being avail. that day. Once I got the WIX off the truck (even though it was like... Trouble codes: P0087.
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next