Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for March 21, 2011
International Automotive Technicians' Network (iATN) - Members Only
Next
(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 Camaro 3.4L No Start VIN: S1S2217874
Vehicle cranks fine, has spark,injector pulse and fuel. Every once in awhile as you crank it will fire but never to the extent where you think it will start. Also will backfire while you crank. Looking for ideas before we remove timing cover. Is there a way to...
View
1999 Chevrolet Cavalier 2.2L Ratio Error VIN: 1G1JC5245X
Customer recently purchased vehicle from someone who inherited it so no history available. We know that the trans ratios are wrong and need help getting the correct Sprocket, Final Drive Sun Gear and Trigger Wheel tooth counts. According to the RPO Tag it is a...
View
1999 Chevrolet Corvette 5.7L Parking/Dash lights VIN: 1G1YY32G6X
Hello Corvette techs, we do Imports only here, this is a friend car. The parking lights,the dash lights don't work at all,and on and off the wipers don't work with the switch.The wipers sometimes work, sometimes they don't,and sometimes they don't shut off wit...
View
2003 Chevrolet Silverado 3500 LT 6.6L engine vibration VIN: 1GCJK33143
engine has vibration at all times, vibration increases and decreases with engine speed. Vibration feels like a misfire. Torque converter has been disconnected and vibration was still there. We just did a head gasket job on this vehicle (vibration was there bef...
View
2005 Chevrolet Silverado 1500 LT 5.3L Mechanical VIN: 2GTEK13T95
Hoping someone has run into this before. Regular customer. we do all his work including changing his oil regularly. Sometimes before he needs it at his request. Mobil 5w-30 & AC delco filter Cust. works in town, but lives 35 miles away. After last oil change,...
View
2005 Chevrolet Silverado 2500 HD LT 6.6L master cylinder VIN: IGCHK23245
Hello techs I had this truck come in with all four wheels locked up. I was able to open bleeders and get the brakes to loosen up. I looked at the fluid coming out and it looked dark, upon adding fluid to the master I noticed some type of oil kind of mixed in a...
View
2007 Chevrolet Impala LS 3.5L Battery light comes on, traction light comes on
This vehicle is a mystery to me. For starters, I have not been able to duplicate the customers concern yet... he states after driving for a while (it varies) the traction control light comes on, the battery light comes on, and the reduced power notice comes on...
View
1999 GMC cut away 5.7L Hesitation, Cuts out, Poor Fuel Economy VIN: 1GBJG31RXX
The truck drives fine until at some point after it is warmed up...it can be 100 miles later on a trip, it loses power. Vin R Vortec 5.7 Engine was rebuilt by another shop due to a bad intake leak. This problem happened before the rebuild and after. They tol...
View
2001 GMC Safari SLT 4.3L abs module VIN: 1GKDM19W11
found code c0265-EBCM relay circuit malfunction ! varifyed that relay was constantly off looking at "live data" found several replys to similar vehicles on here about how they replace the module & thats the fix 99.9 % of the time ! but i checked voltage going ...
View
2007 GMC Sierra 3500 HD WT 6.6L Hesitation, MIL Lamp on VIN: 1GDE4C1237
Hello we have a 6.6 Diesel duramax came in with a check engine light on and lack of power it could not drive faster than 25 MPH,we scanned it and it had a code P0088 Fuel Rail Pressure Too High,and with the scantool we could not adjust the prassure manualy it ... Trouble codes: P0087 (Fuel Rail Pressure Too Low)
View
2001 Pontiac Grand Am GT 3.4L fails emissions test VIN: 1G2NW52E11
Hello everyone I have a 01 Grand Am GT with a 3.4 automatic. I can not get the oxygen sensor heater or the EVAP monitors to set. All other monitor set including the catalytic converter. I have installed oxygen sensors, checked continuity of wiring from sensors...
View
2003 Saturn L300 3.0L Surge, Cuts out, Misfire VIN: 1G8JW54R33
Thanks for reading guys. This is a good one. Our testing so far leads me to thing I have two problems. One, mechanical. The other, electronic. This car runs decent at idle, not great, some noise in timing cover, just off idle, starts running rough and missin...
View

Fixes & Summaries for GM
Fix/Summary Answers
2002 Buick LeSabre Custom 3.8L Evap readi monitor VIN: 1G4HP54K62
Thanks to all of you that supplied the great info. and explanation(s). A special thanks to Paul [...] with the invaluable link to the GM site (pdf file). Will see if cust. will spring for a sender/level sensor. I believe two monitors can fail here in Texas and ... Trouble codes: P0102 (Mass or Volume Air Flow Circuit Low Input), P0463 (Fuel Level Circuit High Input).
14
2005 Buick Century Custom 3.1L Excessive Emissions, Stall VIN: 2G4WS52J75
Well I've finally found time to sit down and close this fix. Thank you to all who replied, especially the ones encouraging me to re-check MAP. I had been discounting MAP because it read the correct BARO for our area when KOEO, and seemed close at idle while I...
9
1989 Chevrolet Beretta 2.0L MIL Lamp on, high idle VIN: 1G1LV1419A
Sorry to say that customer declined any further repairs at this point. Have not heard from customer to know if the idle ever came down or not. If the vehicle comes back and the owner wants to fix the problem I will be sure to update. Thanks for the help. Trouble codes: 15 (Coolant temp sensor fault).
21
1998 Chevrolet C3500 Silverado 7.4L interior lights VIN: 1GCGC33J9W
It's fixed. The KEM/ILM is above the gas pedal, behind the black metal bracket. Chevy took 2 weeks to get it here. Thanks to all.
11
2000 Chevrolet C3500 5.7L fuel gauge VIN: 1GBHC34RXY
Sorry about the extended time, the customer decided to take the truck to the dealer, and the story we get from them is "the load side connector for the #1 fuse was bad." Don't know how that works when powers and grounds to both balance module and cluster teste...
11
2004 Chevrolet Impala 3.8L ABS Module? VIN: 2G1WF55K84
After too much time & too much money customer decided to live with problem, at least until it magnfies itself. After numerous test drives with the scanner & countless hours reviewing data streams for speed sensors (looked perfect), no solution/answer was found...
17
2007 Chevrolet Cobalt LS 2.2L Cuts out VIN: 1G1AK15F37
This car has to ign 1 circuits that are supplied from two different relays. The one that is controled by the body module was dropping out because the body module was dropping ground, sometimes when trying to crank and sometimes when driving down the road. A ne... Trouble codes: P1682 (Ses light will come on and low power light in the dash. Cannot find discription).
10
2007 Chevrolet Uplander LS 3.9L Starter VIN: 1GNDU23197
WE TESTED BETWEEN MODULES AND SWITCH, AND FOUND THAT IT IS LOOSEING SIGNAL FROM PCM TO RELAY. WIRING OHMED OK,, SO RIGHT NOW WER'ER WAITING ON PCM..THANKS FOR ALL THE HELP !!!
6
2007 Chevrolet HHR LS 2.2L fuel gauge VIN: 3GNDAZ3D47
Thanks everyone I havent got to work on car again yet cause owers cant set still long enough , and i need to close this but at least i will have some more ideas when car comes back, also i found out that computer has to have more time to realize gauge and wont...
5
2006 GMC Sierra 1500 HD SLE 6.0L MIL Lamp on VIN: 1GTGK13U56
the customer had replaced the maf sensor with an aftermarket one. we ordered a new one from dealer and installed it. engine light went away and did not return. thanks for all of the help. Trouble codes: P0101, P0171, P0174.
14
1997 Oldsmobile Silhouette 3.4L MIL Lamp on VIN: 1GHDU06E8V
hello all the customer is going to put engine that was supposed to be in it but till then will register it out of county,in reguards to parts intrerchangability all the crank,cam and dampners are the same part #, you could reprogram both computers IF the vehic... Trouble codes: P0341 (Cmp sensor out of range).
5
2005 Saturn Ion-1 2.2L security VIN: 1G8AL52F84
AFTER TRYING EVERYTHING AND SEVERAL DAYS WE SENT IT TO A FORMER SATURN DEALER THEY HAD IT FOR 3 DAYS AND COULD NOT PROGRAM.ON THIRD DAY THEY CALLED AND SAID GM CAME OUT WITH A TSB SAYING THAT ALL SATURN BCMS WERE BAD AND COULD NOT BE PROGRAMMED AND THEY DONT H...
14
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next