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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 23, 2006
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Open Help Requests for GM
Help Request Answers
1991 Cadillac DeVille 4.9L heating VIN: 1G6CD13BXM
car came in for no heat i have flushed cooling system checked t for glogging and blew out heater core, i checked air mix door and programmer seems to be switching fine,but i have heat only on passengers side of car defrost and floor checked all duck work seems...
2000 Cadillac DeVille 4.6L Excessive Emissions VIN: 1G6KD54Y4Y
this customer came in asking us to install 2 new air pumps per local dealership diagnosis. we installed new pumps (with an updated inlet tube relocation kit). in the process of replacing the pumps we found and repaired a open voltage source wire to air pump. t...
1987 Chevrolet S10 Blazer 2.8L 3 -4 VIN: 1GKCS18R9H
hello group... seasons greetings i bought this jimmy wif low miles on crate mmotor,but only had 1st and 2nd gear. i opened it up and it had worn clutches,3rd n 4th were gone. so i put it back together and it werked ok for obout 2 weeks...upon acceleration it s...
1997 Chevrolet K3500 Cheyenne 7.4L hard start VIN: 1GCHK39J1V
hi guys i have two 1997 k3500 chevy duallies with the same problems. the problem is starting hard after warm. at cold start say in the morning both trucks start right up like brand new, but after that all day they have extended cracking before starting. acting...
1998 Chevrolet K3500 Cheyenne 6.5L Poor Idle Quality, Cuts out, MIL Lamp on VIN: F6WF017624
Thank you for your time to start.This truck originally came in with battery problem.Would lose voltage in couple days,connections were terribly dirty so batteries would never fully charge.When checking for draw i first start with test light between battery Neg... Trouble codes: P1214 (injector pump timing offset), P0216 (injector timing circuit at times)
1999 Chevrolet Tahoe LS 5.7L MIL Lamp on VIN: 1GNEK13R9X
I will truly be humbled if someone can tell me what I am missing.At 103,000 mi the intake gasket was changed(typical GM coolant leak). Then this Tahoe(my wife's) developed an intermittent dying problem(but would start up immediately. It had an aftermarket alar... Trouble codes: P0308
2001 Chevrolet Silverado 2500 HD 6.6L ses VIN: 1GCHK29141
This truck will intermittently go to nuetral at a stop sign. The PRNDL will flash on #1 and the circle around the overdrive D indicator will not appear. Unfourtunatly it is so intermittent i have not seen any of this. I did pull codes u2106 lost com with trans...
2000 GMC Savana 3500 5.7L steering wheel VIN: 1GDJG31R3Y
This truck came in with a steering wheel vibration. Test drove and sometimes the steering wheel will vibabrate like a bad tire. Everything in front end is tight, and there is no rotor runout. Sometimes when you drive it, the steering wheel will only vribrate w...
2000 GMC Jimmy Diamond Edition 4.3L Hesitation VIN: 1GKDT13W0Y
The problem this vehicle is having is that it falls flat on its face when you try to accelerate for a few moments, and then accelerates normally. There are no codes present. Plenty of fuel pressure(60 psi idling and 65 psi under slight load in gear with brake ...
1991 Oldsmobile Delta 88 Royale 3.8L No start VIN: 1G3HN54C7M
We have a fun one that has made us all forget our names. It had orginally jumped timing and came in on a tow truck. We replace the timing chain and gears. Repaired the wiring harness for the cam sensor to the ignition module. We have good comression and fuel ...
2000 Pontiac Montana 3.4L intake manifold VIN: 1GMDX03EOY
This van has a coolant leak from intake manifold. I am working on this for a friend. I am a trans and diesel tech so don't work on these much. Another shop told him that the heads were leaking also. There is a small amount of sludge under radiator cap and a sm...

Fixes & Summaries for GM
Fix/Summary Answers
1999 Buick Regal LS 3.8L e brake VIN: 2H4WB52K4X
thanks to all that replied to my help request Norm from washington gave me a detailed fix thank you sir the other six replies all had the same info and I thank you all I adjusted the shoes first and then the cable but the brake was not that great still didn't ...
2003 Chevrolet Trailblazer North Face 4.2L Mechanical VIN: 1GNDT13S73
We replaced the actuator on the left (not the high one). That actuator controls the blend door for floor and panel. The upper control actuator controls the blend for the defrost. We had a hard time getting the actuator to mesh with the gears but we got it. Thi...
1986 GMC K1500 High Sierra 5.0L trans/tcase VIN: 2GTEK14H1G
well guy thanks again for all your help. it was greatly appreciated. i put in another np208 test drive o.k. but only time will tell. (intermintant problum) thanks again joe
2000 Pontiac Grand Am SE 2.4L Door Locks
after further testing at relays as suggested,believe bcm is in need of replacement.customer would not approve repairs.was able to cycle locks at relays.thanks for the help.
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