Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 4, 2006
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 Cadillac DeVille 4.9L theft deterent VIN: 1G6KD52B9S
we desconnected the battery to replace the turn signal switch this repair went ok the problem now is we can't reset the alarm system. the owners manual tell us that unlocking any door with the key will reset the alarm system this is not working can anyone give...
1988 Chevrolet K1500 Cheyenne 5.7L rear half of drive shaft VIN: 2GCEK19K4J
This truck was driven in today in 4WD mode since the rear drive shaft was in the bed of the truck. As I understand it, this is the second failure of the rear driveshaft and I also discovered the previous repair wasn't done by any type of professional. The fron...
1993 Chevrolet Astro 4.3L electronic shift VIN: 1GCDM15Z7P
The transmission will only shift electronically through the first complete cycle, i.e. start, put shift lever in 4/OD, starts in 2nd, shifts to third, then fourth, then TCC locks up. Decel to a stop, will not downshift, start out again in third. In that time a...
2001 Chevrolet Tahoe 5.3L Starting VIN: 1GNEC13T01
I have this tahoe, customer complaints that battery dies after truck sits for 2-3 days. I found a 200mA draw. If I remove the courtesy light fuse draw goes away. Found that bcm is leaving the inadvertent power relay on. I monitored the power relay timer with t...
2003 Chevrolet Silverado 2500 HD 6.0L oil presure VIN: 1GBHK24U23
first let me say thanks in advance for your time and help.This truck came in with the oil presure gauge in the dash reading around 25lbs cold and droping to around 5-0 lbs after it warmed up.The motor never seemed to get noisey as the presure would drop so i s...
1997 Geo Metro LSi 1.3L No Start, Shut Off VIN: 2C1MR5298V
Car towed in - shut off - no start. Checked out , no spark, no fuel , no power to coil ... found blown IG-coil fuse (15 Amp under dash junction block). Fuse powers all kinds of wonderful things. Has anyone had one of these do this. I'm just trying to save some...
2003 GMC Sierra 2500 HD 6.0L #7 cylinder VIN: 1GCHK23U53
Customer was driving truck at 50 km when engine started making noise,drove one more block then shut engine off.Restarted later,ran poorly with loud engine noise. We were contacted by customer and vehicle was towed in.Tested engine and found no compression in #...
1990 Oldsmobile Cutlass Supreme 3.1L Misfire VIN: 1G3WH54T5L
this is my personal car. has been running good up until monday when I tried to pass and it fell on its face. started stalling the next day. replaced fuel filter.(hadn't been changed since i got the car)didnt help. replace ignition module and coils. doesnt stal...
1999 Pontiac Grand Am GT 3.4L Surge, Cuts out VIN: 1G2NW52EXX
car mainly cold on accel, hesitates, surges, pops and backfires. does get better as engine warms up, but still there. fuel pressure is koeo at 45, and flow is good. did a snapshot with tech 2 and only thing we saw was at 24x would match engine rpm only to abou... Trouble codes: P0300 (misfire)
2000 Pontiac Montana 3.4L alternator VIN: 1GMDX03E7Y
i have a constant voltage fluxuation on this montana that is visible in the dash lights as well as the headlights. at start up the vechile goes discharge, then charge and finally charging voltage drops down and the fluxuation begins. the charging voltage moves...

Fixes & Summaries for GM
Fix/Summary Answers
1999 Buick Regal LS 3.8L No Start VIN: 2G4WF5516Y
thank you everyone for the was the ignition switch.i had replaced switches before but they never acted like this.once again iatn members are great. Trouble codes: B3727, B0608, U1040, P571, C1245, C1277.
2002 Cadillac DeVille 4.6L Misfire, MIL Lamp on VIN: 1G6KD54Y22
Well, came to work and I did scope the secondary, the #1 shown a spike as high as..the top of my..smoking head. Most of the replies suggested swapping coil position, but this 4.6L has one ign. cassette for each bank and left and right bank could not be swapped... Trouble codes: P0301 (Cylinder i Misfire).
1989 Chevrolet G30 Sportvan 5.7L No Start VIN: 2GCGG35KOK
Thanks to everyone who responded. The cust. picked up the van and said he would bring it back in a few days. Still haven't seen it. From the responses, it seems to be the distributor that is the problem. The cust. says that the van keeps dieng out but he has t...
1995 Chevrolet S10 4.3L ABS and Brake Lamps VIN: 1GCCS14W7R
Thanks for the replies guys, After checking tire sizes and other things I got to get on it for real today and monitored the powers and grounds. Main ground to the abs unit is G180 and it was where the body repairs have been made. That ground was going away wit...
1998 Chevrolet P30 STEP VAN 5.7L ABS Module VIN: 1GBHP32R4W
thanks to everyone that replied. well, I feel very much relieved to see the abs light off on this car and the abs functional. After giving up on both the snap on scanners I got a hold of friend a genysis scanner, but no result, then, he tried the tech II with ...
2000 Chevrolet Malibu LS 3.1L turn signal VIN: 1G1NE52J1Y
Thanks for all the replies. There is a pattern of the combo switch failing on these cars and we are sure now that is the problem but the customer did not want the unit replaced at this time. She is a little short of $$. Thanks for all the help.
2001 Chevrolet Silverado 3500 LS 8.1L Hesitation, Stall, MIL Lamp on VIN: 3GBKC34G41
This truck is down the road. Finally got back to it. Removed transmission to gain acsess to sensor. This allowed motor to be picked up and tipped forward enough to drill and screw a chain to it and connect to a slide hammer. This only pulled an inch out leavin... Trouble codes: P0335, U1041.
2002 Chevrolet Silverado 3500 8.1L Hesitation VIN: 1GCJK33GX2
Hey guys,Thanks for all the input.Several of you must've missed the part about the problem only occurring in open loop.O2 sensors and fuel trim[not enabled in open loop]really don't factor into this problem.Anyway,George gave me the answer.He responded on iatn...
2003 Chevrolet Suburban 1500 LS 5.3L RF Wheel VIN: 1GNFK16T73
After a little more driving the truck was making the noise more consistently. The customer could turn on and off the A/C and make the noise come and go. We have since replaced the A/C Compressor and it has been fine since. Thanks for all your help.
1994 GMC G2500 Rally 5.7L cruise control VIN: 1GKEG25K6R
Thanks for all the replies. David hit it right off, the module is attached to the right side of the heater case with velcro. Funny that MOD and Alldata both have it located on the opposite side of the vehicle! At any rate, once I found the module it wound up h...
1995 Oldsmobile Aurora 4.0L head lights, dash lights, tail lights VIN: 1G3GR623CS
thanks for the good info. we have a multifunction switch on the way. it makes perfect sense. again thanks for the help!!!
1992 Pontiac Bonneville SE 3.8L Poor Idle Quality, Hesitation, Backfire VIN: 1G2HX53L2N
Hi guys. Thanks to all that replied. I really appreciate how you guys replied so quickly also. Everyone that suggest that the chain might have jumped were correct. I reported what I found to the customer and he said go ahead and fix it so I did and hes back on... Trouble codes: 26 (Quad Driver module Failure).
2001 Pontiac Grand Prix SE 3.1L Cuts out, Stall, tach doesnt work VIN: 1G2WK52J01
I would like to thank everyone who replied. Special THANKSSS!!! to Benn from Minnesota who hit it right on the head the wires were rub threw on the ac accumaltor. Thanks again!!!
2001 Pontiac Grand Am SE 3.4L Hesitation, Cuts out VIN: 1G2NF12E71
This one is fixed. The fix was the ignition module. Intermitantly I was losing the 3x signal to the Pcm. At high rpms it was fine but when cranking or idle in gear the signal would get choopy sometimes. Thanks for all the responses.
1993 Saturn SL2 1.9L MIL Lamp on VIN: 1G8ZK5570P
Hello to all. Thanks to all those who responded, especially Steve from Michigan, Allen and Ernest from Mass., and Chuck from Washington. Chuck was dead on about the computer being reprogramed wrong. We went ahead and replaced the EVAP soleniod on the back of t... Trouble codes: 26 (Quad driver module failure), 32 (EGR system problem), 81 (Info-Flag ABS message fault).
2001 Saturn L300 3.0L No acceleration VIN: 1G8JW52R41
First off, I would like to thank everyone that tried to help. I didn't recieve much help though. I guess Saturn doesn't want us fixing their stuff. I was able to test the wiring for the throttle body module and that was all good. The garage I was fixing this f... Trouble codes: P1516.
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next