× 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 October 7, 2013
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
1995 Chevrolet Impala SS 5.7L Poor Idle Quality VIN: 1G1BL52P9S
hvae this car here, sometimes will have a long crank to start, but when it does it runs rough at idle and definatly doesn't have full power it should. When running stinks like sulfur, i checked for codes none present. Verify good spark, decided to unplug injec...
2000 Chevrolet S10 4.3L Misfire, MIL Lamp on VIN: 1GCDT14W6Y
Vehicle came in for check engine light for (p0304)for rough idle. I check and found plugs and wires old. Replace spark plug, wires, cap and rotor. After i replace, test drive; vehicle is running good. Customer had no complaint driving home. Two day later, cust... Trouble codes: P0300
2004 Chevrolet Silverado 1500 LS 5.3L Unknown VIN: 2GCEK13TX4
I am asking for help as this truck has a scraping noise that almost like clock work comes on at 50mph. If you put the transfer case in auto mode 4wd and drive it the noise does change when you command it in and out. I have installed a used low mile complete di...
2007 Chevrolet Silverado 1500 LTZ 5.3L MIL Lamp on VIN: 3GCEK13M27
veichle came to another shop with p0420.they changed cat assy. code came back on.I got veichle with p0420 & p0430.cats tested cold.o2's switching/following fronts.checked,tune-up new.no vac.leaks,no exhaust leaks,02's in correct positions.f/press,ok.holds pres... Trouble codes: P0420, P0430
2010 Chevrolet Express 2500 4.8L fuse box VIN: 1GCZGFBA9A
The fuse box is burning out the fuel pump circuit on the printed circuit. When the problem happens, and we have seen it on several of this year and model van, there is power at the fuel pump relay, but not at the fuse. The fuse is never blown, and the fuel pum...
1995 GMC C1500 Sierra SL 6.5L No Start, Cuts out, Stall VIN: 1GTEC14P8S
Vehicle runs strong between failures. After restoring fuel pump operation (new oil pressure switch), now restarting after stall is immediate. Sometimes it runs 30 minutes+ with no failures. Monitored power to FSD during stall and circuit maintained 12.7V. All ... Trouble codes: DTC, 35 (history code after clearing codes has not reset after multiple stall), DTC, 33 (MAP high. Has reset once since initial code clearing), DTC, 32 (EGR System problem. Code re-appeared once since clearing), DTC, 65 (Accellerator pedalposition. Historical code. Has not re-occured)
2005 GMC Envoy SLE 4.2L Rear axle VIN: 1GKCT18X25
Good day poeple. I have this 05 Jimmy with a vibration starting at 100 KPH then just keeps getting worse as speed increases. I have an EVA (electronic vibration anyalses machine) which indicates a first order tire vibration. This tells me that the vibration is...
2007 Pontiac G6 GT 3.5L No Spark VIN: 1G2ZH58N87
I have no spark and intermittently a very weak spark on this vehicle. At the 6 pin ign coil I have battery + from a fused ign switch and a good ground. I even ran a redundant ground to eliminate a common ground failure listed on identifix. I have no "low refer...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Cadillac DeVille 4.6L Body Control Module VIN: 1G6KD52Y7V
Unplugged all components on comfort fuse. Unplugged IPC, still BCM staying on. Borrowed a Tech 2 and checked all doors. Never did find the cause of the BCM not powering down. Thanks for all the help.
2004 Cadillac CTS 3.6L security VIN: 1G6DM57764
Thank you everyone for your help, I got the key to relearn with the 30 minute relearn procedure and car is working properly now. Once again thanks to all that replied.
1989 Chevrolet R1500 Suburban Scottsdale 5.7L Engine VIN: 1GCER16K9K
Hey guys thanks for all the great advice. My best tech got back from vacation this morning and had it figured out in a couple of hours. While the egine in a power brake, shot the injectors with a timing light and noticed that the right injector would stop spr...
2002 Chevrolet S10 4.3L Mode door VIN: 1GCCS19W22
Hey guys,thank you all for your help,even though none of them was the right answer,I still thank you all for trying to help me!I removed the heater box & upon careful inspection I found that the foam insulation on one side of the mixer door was missing.I keep ...
2003 Chevrolet C6500 Kodiak C6C042 7.2L Lighting VIN: 1GBJ6E1CX3
I am always a little hesitant to click "Yes, I fixed this vehicle" when the problem was intermittent. With the help of all of you, and particularly the information Mike from the HD forum sent us, we were able to locate, and repair several bad grounds inside a ...
2004 Chevrolet Silverado 1500 4.8L Ipc VIN: 2GCEC19VX4
Thanks all for the information. Got another IPC in with the correct hours but they missed adding the trip B. SO I talked to the parts guy again, he called the people that rebuilt and program these things and they said a tech2 could activate the trip B. I got i...
2004 Chevrolet Express 2500 4.8L No Start VIN: 1GCGG25V44
Thanks to all that replied I got in today the van would not start no communication with abs and dash lights flashing I rechecked the grounds the ground strap on the lower right side of the engine to frame the connections looked clean but when I pulled on the s... Trouble codes: U1016.
2002 Pontiac Sunfire GT 2.2L Engine overheating VIN: 1G2JB52442
Hello Friends Thank you all for your great replies. This one is fixed, thanks to all of you for your help.After checking for exhaust in coolant and found none. I removed the spark plugs and checked all the pistons with my video cam, as far as I could tell any...
2004 Pontiac Aztek 3.4L Instrument cluster VIN: 3G7DA03E34
We were getting the wrong clusters. We had the original one rebuilt and all is good. There is no way to reprogram the cluster on this vehicle. And no options in the tech II to change anything. Thanks to all who replied
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next