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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for May 5, 2006
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Open Help Requests for GM
Help Request Answers
1984 Buick Regal T-Type 3.8L engine VIN: 1G4AK4790E
Ok, to those who think they have had the "hell" car... here's one that you may send me flowers and condolences. This T-Type came from an auction. It was purchased by a local auto sales that sent the car to me for a high idle and a lack of power (not too bad, j...
1984 Cadillac Seville 4.1L Low pedal VIN: 1G6AS6987E
Low brake pedal,intermittent brake warning light. Came in with a fade away pedal, replaced Master Cylinder, pedal low. Blocked off all lines pedal firm lossened one at a time, L/R soft, replaced rear calipers. Pedal still low. Reindexed park brake lever on le...
1989 Chevrolet C1500 Cheyenne 5.7L internal engine VIN: 2GCDC14H2K
this truck runs rough at idle & lacks power always . this is a rebuilt long block . the engine vacumn fluctuates between 10 to 13 lbs , there is no vacumn leaks . code 42 est is set . one of the concerns is that we get 2 lbs of pressure,testing at the dip stic...
2001 Chevrolet S10 LS 4.3L Poor Idle Quality VIN: 1GCDT13W11
Full VIN [...], Truck came in for a "miss,Idles rough". WE ck every thing we could think of, some 3 times. This ones got the best of me. The Idle is uneven, It shakes, List of repairs cap rotor, plugs, fuel injector cleaner, fuel regulator, M.A.P &...
2001 Chevrolet Malibu 3.1L 4T40e transmission VIN: 1G1ND52J31
Hey Guys, Hopefully someone can give some insight or help on this vehicle. The car has a harsh shift when put into drive or reverse from park or neutral. When test driving it shifts normally. We've performed a line pressure test and the line pressure read a st...
2001 Chevrolet Express 3500 5.7L rotors & pads VIN: 1GBHG31R51
We replaced front & rear brakes at 81763 miles, we machined the rotors & installed delco 17D459c ceramic front brake pads & 17452 delco rear brake shoes. Van came back at 92375 miles with severly warped rotors . We replaced the rotors with delco 18a874 rotors....
2003 Chevrolet Monte Carlo SS 3.8L none VIN: 2G1WX12K33
security light flashes, car still runs,I believe this mean that the system is in op, check fuses OK,? not sure were it is, so chk all, left and right side of cockpit, and under hood, all OK. if some one can enlighten me on this system and what to check and tes...
1995 Geo Prizm LSi 1.8L Hesitation, Misfire VIN: 1Y1SK5280S
engine hesitates at mid range rpms in park; and before shifting at high acceleration Trouble codes: 14 (Air Temp)
2002 GMC Yukon Denali 6.0L abs pump VIN: 1GKEK63U62
I got this GMC truck that the L/F wheel bearing was replaced due to worn out,before we changed the bearing the customer said the abs would kick in when slowing down driving at 15 km,after the bearing replacement it did the same thing you hear the abs pump kick...
1996 Pontiac Grand Am SE 2.4L No Start, Stall, MIL Lamp on VIN: 1G2NE12T7T
This vehicle originally came in with no start and all dash indicator lights on. We found codes p1601 and p1629. We talked to other techs and dealers techs and figured new PCM and relearn. All was well for one day. Next day would not start and same codes. Relea... Trouble codes: P1601, P1629
1996 Pontiac Grand Am GT 2.4L No Start, Starts then Stalls VIN: 1G2NW12T2T
HI Y'ALL!!! I got a Pontiac Grand ham, here that has code p1629(theft detterent fuel disabled) starts then stalls. As stated the ignition was replaced. I am expecting the theft light to flash so we CAN relearn the password. It don't flash, just on all the tim... Trouble codes: P1629
1997 Saturn SL2 1.9L Starting VIN: 1G8ZK5270V
Hey guys, I have a no crank condition. Starter will work if the yellow/black wire on the primary side of relay is grounded. This ground comes from the RKE module. Have read and tested the ground under the seat, (on archives), no luck. Before I replace the RKE ...

Fixes & Summaries for GM
Fix/Summary Answers
1999 Cadillac Catera 3.0L timing belt / heads VIN: WO6VRS2R8X
Well the Caddie has been on the road now for a week with no problems, upon reassembly (without the heads on) i cranked the engine until oil appreared from the oil holes in the block ( which took 6 10 second butsts)after the heads were put back on but before th...
1989 Chevrolet C2500 Cheyenne 5.7L No Start VIN: 2GCFC29KXK
First I just want to say what a wonderful tool this site is and what a pool of knowledge that is available for us to use! Thanks to all who replied...I sent personal messages to all who responded (I hope). Here is a summery of the advice I was given. Mark sa...
1992 Chevrolet S10 Blazer Sport 4.3L No Start, blowing fuses VIN: 1GNDT13W8N
Thank you guys for all the input. We pulled the engine harness and found that one of the orange power wires was open and shorting intermitently short against the heat shield on the fire on the passenger sidel.
1998 Chevrolet C3500 Cheyenne 5.7L No Start, Stall VIN: 1GCGC33R9W
Customer took the truck the following day. Helpful responses received from Robert in Indiana - back probe ignition feed side of pcm fuse w/ voltage meter when stall occures see if you have volt drop. ignition switch failure is common And from Bill in Texas -...
2000 Chevrolet C3500 5.7L fuel gauge VIN: 1GBJK34R1Y
Most replies thought the senders would be the problem. Some said the computer itself was giving the bad reading. What we have done with the customers OK is disable the rear tank, hook up the front tank to the ECM and reprogramed the ECM for a single tank and t...
2001 Chevrolet Impala 3.4L poor power cruise sp VIN: 2G1WF52E51
This car was Fixed by Replacing the Cat Convertor as advised by Aaron from North Carolina I can not explain the low vacuum reading with exhaust off?? Date: 04/20/2006 12:48:59 thats sounds like the year that melts cats man. had 2 of them the same day, might ...
1993 GMC Jimmy 4.3L Excessive Emissions, Stall, MIL Lamp on
Turns out the rebuilt injector unit I installed was defective and my recently repaired snapon scanner was malfunctioning. Installed new GM unit and all is fine. thanks to all that replied. Louie
1995 GMC G3500 Vandura 5.7L Poor Idle Quality, Stall VIN: 1GDKH32K8S
Wow. I want to thank the few that helped me out. Even though I removed the EGR and made sure is was seated fully closed and left the vacuum line off it while running, I thought I eliminated an EGR issue. I was wrong. Here the pintle was weak and was opening up...
1997 GMC K2500 Sierra SL 7.4L rear view mirror VIN: 1GTGK29J3V
Thanks to all who answered back,the customer is very happy to know that everything is working normally.Also thanks to IATN for helping with information that seems to be available knowhere else except from knowlegable techs in the field.
1998 Oldsmobile Bravada 4.3L Stereo/CD Player VIN: 1GHDT13W4W
There was a problem with the radio drawing too many amps and draining the battery down. sent out for repair good to go now. Jeff...
2001 Oldsmobile Aurora 3.5L Stall VIN: 1G3GR64H61
Vehicle is not fixed. We replaced crank position sensor as several replies suggested and it seemed to be better for a week or so, but problem was still there. It it got a little worse, but was still drivable. We spent a lot time on it and a lot of calls to tec...
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