Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for January 21, 2008
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
1992 Cadillac Seville 4.9L Water pump VIN: 1G6KY53B9N
Car was towing, customer complains coolant leaks, engine noise & overheats. Ck out, found water pump going bad again, I just wonder anything else should I do before replacing another ACDELCO water pump ? No TSB is found in this problem. Please advise, thanks.
1995 Cadillac Eldorado ETC 4.6L Unknown VIN: 1G6ET1296S
Getting "Traction Disabled" message. Current code T033. My computer (solus) offers me no help. What is this code? Also, anyone know how to reset the message on the cluster " Change Transmission Fluid" ??? thanks
1987 Chevrolet R10 Custom Deluxe 5.7L No Start VIN: 1GCDR14K1H
i have a chevy truck with a no start condition.on this truck it has two gas tanks . the only way the truck will run is if you hold down the gas tank select switch, if you let off the switch the truck dies.i do not know very much about this system. any informat...
1991 Chevrolet K1500 Cheyenne 5.7L No Start
Hi all. 1991 k1500 4WD, 350 auto. No start, cranks fine & will start if fuel dribbled into throttle body. No power coming out of fuel pump relay to pump(grey wire), but pump is okay, will run fine with jumper wire applied. Does not run for a second when key is...
1996 Chevrolet Cavalier 2.2L No Start VIN: 1G1JC5241T
We replaced the ignition lock and cylinder with a used one and tried the relearn procedure but the car just runs then stalls and the theft light stays on constant after flashing about 4 times. I was told it should stay flashing for ten minutes. I then tried a ... Trouble codes: 1629 (passlock code incorrect or shorted)
2000 Chevrolet C3500 7.4L Misfire VIN: 1GBKC34J5Y
Truck came back last week with multiple misfires. Pulled plenum off and saw it had all injectors replace with reman and #2 was spraying in the intake when turned off and FPR was also leaking. Changed both and injector 4 1 2. Started it up and now missing on 8....
2000 Chevrolet Blazer LS 4.3L service 4x4 light VIN: 1GNDT13WXY
this one is driving me crazy,belongs to family.When you drive it approx. 3 miles the 'service 4x4' light luminates on dash.Its not in four wheel drive either.I have replaced the switch already and the light still comes on.It goes into 4 wheel drive low and hig...
2005 Chevrolet Impala 3.8L Excessive Emissions
Hello and thanks in advance for input I basically need some ideas for further testing or may be some direction. This vehicle will intermittenly have the fuel trims go negative. Typically it is just the LTFT but sometimes the STFT will also be negative. The c...
1992 Geo Tracker 1.6L No Start, Stall VIN: 2CNBJ18U0N
vehicle stalled while driving down highway, just like shutting off the switch. would not restart. towed to shop, poured some fuel into throttle body and vehicle starts but dies as soon as fuel is gone. have 30 psi fuel pressure at throttle body but nothing com...
1999 GMC Sierra 1500 SL 5.3L transfer case VIN: 1GTEK19T4X
hi guys- when transfer case selector sw. is placed in auto 4x4 works normal. when in 4x4 high, or 4x4 low front driveshaft from transfer case will turn when on lift, but not when vehicle is on ground, rear wheels spin only, almost seems as if there is some kin...
2000 GMC Jimmy SLE 4.3L tranfer case
need someone to steer me in the right direction.this jimmy ,when first presented to me, exhibited no function from either 4 hi or 4lo buttons.from what i understand, there are two types of transfer case options on this truck. this one has the instatrac stle an...
2001 GMC 6500 series 8.1L speedometer VIN: 1GDJ6H1E71
on this truck I need the wire diagram to follow the speedometer circuit. also have the 500 code if I can have the steps to follow the test. my fax # [...]
2004 GMC Sierra 1500 SLE 5.3L looses ps assist at idle VIN: 2GTEK19T74
WE do not find any kinked hoses/lines or restrictions & seem to have full flow- we have no way to pressure test system though
2005 GMC Sierra 2500 HD 6.0L oil pressure VIN: 1GTHK29U95
Customer complaint of no oil pressure. Removed oil press. sender and started engine. No oil at port. Lifters noisy. Removed pan, front cover, and oil pump. O ring on pickup tube good and oil pump and relief valve look good. Archives show some pump problems, bu...
2004 Oldsmobile Alero GL 3.4L suspension VIN: 1G3NL52E14
ok guys, this one is about to drive me nuts, car came into our shop with an interment pop in the front end when you would make a sharp turn either way, we road tested the car couldnt duplicate, customer brought car back about a month later stating it had got w...
1998 Pontiac Grand Am SE 3.1L windows VIN: IG2NW12M6W
inside of windows keep icing up.does not come factory with a recycle or fresh air control.heater core is not leaking.drain to heater box is clear.a/c system was recharged and is full.every morning when cold all inside windows still have ice on them.thank you f...
1999 Pontiac Grand Am SE 2.4L Engine VIN: 1G2NE52T9X
Customer Dropped car off Sunday Morning & said it overheated. After cool down they added water & started. Thet noticed engine was noisy. We checked this morning & wasnt noisy on startup but got worse the warmer it got. Its not a knock but more of a rattle that...

Fixes & Summaries for GM
Fix/Summary Answers
2004 Buick Rainier CXL 4.2L all electrical VIN: 5GAET13P24
The Rainier is fixed. Replies ranged from grandkids, faulty BCM, a faulty module waking up, backup light switch, corroded cables or connectors, cell phones left plugged in, rear seat DVD player staying on, mirror lights in visors staying on, faulty ignition sw...
1988 Chevrolet K1500 Cheyenne 5.7L Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy VIN: 1GCDK14K8J
Thank you for all your help. You guys were right on the money. When I pulled the distributer apart,I found a cracked magnet on the shaft. I put a reman distributer unit in it. The cust.says it runs better than it ever has. I've been wrenching for 10 years an...
1995 Chevrolet Caprice Classic 5.7L front brakes VIN: 1G1BL82P7S
1995 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, Surge, Stall
Thank you all for the help. After reading all replies i called the customer and asked him if he could bring the car back so we could do some more test. He replied that over the weekend he had traded in the astro van for 2007 ford escape.
1997 Chevrolet Venture 3.4L heater VIN: 1GNDX06E0V
Thanks to all who replied. The general consesus would point to either a partially blocked core or an air lock in the system. The customer has not been able to come back in due to a health problem but he told me that the last time he used the van, the heat was ...
1998 Chevrolet P30 4.3L pigtail on ignition switch VIN: 1GBHP32W1W
Thank you all. I was told by my local GM dealer that i had to buy the whole harness to get a pigtail. I am so thankfull for all of your help. He had the part in stock when i gave him the part number...great information...Everybody have a great week week
1998 Chevrolet Cavalier 2.2L Dash Cluster VIN: 1G1JC52433
As many stated the Cluster is a control unit. I sent it out for repairs telling them it was a cold related starting problem. The repair shop repaired it and cold tested it without fault. I installed the unit and have tested the car for 3 weeks without a fault....
1998 Chevrolet Lumina 3.1L brake lights VIN: 2G1WL52MXW
Alot of people pointed towards the multifunction switch. well we replaced it and we still had the same problem. After some further digging i found out it was the turn signal rocker switch. we replaced this and had no problems. it was like the switch was worn a...
2001 Chevrolet Silverado 2500 HD LS 6.0L n/a VIN: 1GCHK23U41
Some of you hit the nail right on the head, I did a CKP sensor relearn and truck is working great, thanks to all of the replies.
1995 GMC K2500 Sierra SL 6.5L glow plugs VIN: 1QTGK24F85
The GMC is not fixed because of time restraints. Would like to thank all who replied and sent me faxes. What I found was the pink wire from ignition switch to glow plug relay is open have not had time to chase open down yet. Not sure if boss wants to spend tim...
1998 GMC Yukon SLE 5.7L No Start, kick back VIN: 1GKEK13R9X
well hello and thanks for all the replies . i tried a new cap and rotor . but that wasn't the problem .i noticed the coolant overflow bottle was lower than yesterday. this truck only kicked back when cold .so my thoughts seeing the coolant low shifted to hydro...
2002 GMC Envoy SLE 4.2L lft. turn signal VIN: 1GKDT13592
Thanks to everyone that replied to our problem. Based upon the replies we recieved we went right to the ignition switch. we removed both covers of the switch (they pop off) and found a contact switch that had been arching. We replaced the switch which in retu...
2002 Saturn Vue 3.0L reading -7 on temp and reading 43 mph when stopped VIN: 5GZCZ63B92
replaced tcm with new oem tcm from dealership. problem fixed
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next