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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 3, 2011
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
1998 Buick Regal LS 3.8L Stall, MIL Lamp on VIN: 2G4WB52K8W
Hello all. Buick came in about a week and a half after replacing valve cover gaskets with multiple codes (703, 1361, 1362, and 1374) and intermittent stalling. when the customer's car would stall on him, most of the time, it would start right back up, but some... Trouble codes: P0706, P1361, P1362, P1374
1999 Cadillac Catera 3.0L Poor Idle Quality, No throttle response VIN: W06UR52R6X
Hi everyone, Looking for a little help on this Caddilac. Vehicle towed in for wont pick up speed. Car will start ok, idles a little rough, hit the accelerator, nothing. Sometimes you get a slight response from pushing to the floor. We replaced the throttle bo... Trouble codes: U2106, P0650
1996 Chevrolet Tahoe 5.7L Transfer case VIN: 3GNEK18ROT
Customer called and said vehicle all the sudden lurched violently on the freeway, and then was working very hard after that. Vehicle was towed to my shop and ran and drove perfect at all speeds. During the test drive I noted that the 4 hi and 4 low lights were...
1999 Chevrolet C1500 Suburban 5.7L The Whole Truck VIN: 3GNEC16R7X
Hello im charles and i am new at this so don't get mad if i don't do this right. We have had this truck all week trying to find a noise & a shake as if you are running over a rumble strip in the road. Tires had wire showing so we replaced them. Front & rear br...
2000 Chevrolet Suburban 1500 5.3L Fuel Gauge VIN: 3GNFK16TOY
Guud morning i have a 2000 suburban here with fuel gauge inoperative and [...] fuel level sensor circuit high voltage. Tech 2 data shows around 2 volts fuel level at 75%, but fuel gauge does not work stuck at empty, data also shows what gauge should have a...
2002 Chevrolet Monte Carlo SS 3.8L Abs VIN: 2G1WX15K72
Hi! we have an 02 Monte Carlo with an intermittent abs light that we cant get to come on. We puled history codes that are C1216, c1218, C1224, C1228, and C1235. We were able to watch the sensors and they are all working properly has anyone come across this pro...
2002 Chevrolet Tahoe LT 5.3L Rear Diff Makes Noise on acceleration VIN: 1GNEK13TO2
This a 4:10 diff we are dealing with. After all diff gears, bearings, shims, and every thing torqued to specs... And noise still present, we bought a complete reman diff unit. Vehicle was test driven. Noise gone. A week later the vehicle came back with the sam...
2002 Chevrolet C7500 8.1L Engine VIN: 1GBM7HIE62
I'm stumped on this one. I have replaced the same motor in many and have never ran across this, actually I have never had this problem with any kind of new motor install. New Crate motor that had heads removed and hardened valves installed. Did the normal swap...
2003 Chevrolet Suburban 2500 LS 8.1L service brake booster VIN: 1GNFK16Z73
This truck, came in to our shop, no start, check engine light. had wires in underhood fuse panel eaten by field mice. repaired all wiring, put in lot, then battery dead, found battery shorted replaced battery customer picked up. brought back , with service bra...
2004 Chevrolet Impala 3.8L 2-1 downshift noise VIN: 2G1WF55K84
Problem has developed about 15k miles ago. While trans automatically downshifts during normal slow down at about 15 mph (2-1 shift) there is a loud buzz noise and trans pressure rises from ~ 75 psi to 150 psi - foot off gas. Sometimes lasts for 2-3 seconds, so...
2005 Chevrolet Silverado 3500 6.0L Poor Idle Quality, Cuts out VIN: 1GBJC34U15
at times truck will dump fuel out of front filler neck. when this happens truck will stumble and die loosen cap truck will start up. fuel guage reading just below 1/2 tank as well as scanner rear tank has less than 1/8 tank thanks for your help
2005 GMC W5500 Forward W5S042 5.2L MIL Lamp on VIN: 4KDB4B1U75
tested 2 com wires from pcm to tac module. ok. tried new ignition switch, tried disconnecting alternator cable and regulator plug, tried jumper from ground to engine. when running with key off, seems to be 2.5v on black/yellow wire (gd wire). turn on wipers or... Trouble codes: U0107 (active), P0053 (B1S1 o2 heater), U1041 (loss of ebcm com)
2006 Saturn Vue 2.2L Cuts out, Stall VIN: 5GZCZ23DX6
Hi everyone, I have this 06 VUE that I think may have a security issue but don't know for sure or why it happened. Customer drove to the grocery store, came out and the engine would start and run for 2 seconds then die. Also the door locks and the key FOBS sto...

Fixes & Summaries for GM
Fix/Summary Answers
1991 Chevrolet Corvette 5.7L Tach
With no other symptoms we will be pulling the cluster out before winter. He wants to drive it for the warm months. The cluster is going to be checked by Module Master, someone we often use for EBCMs. The solenoid on the man trans was something called a "1 to 4...
2001 Chevrolet Camaro 3.8L Shuts down
Rereading I see I forgot to mention the throttle body was replaced before the TAC module.I did receive some heat issue related suggestions and tried to get it to fail in controlled conditions.Unfortunately the local temps have been below 70 and and my efforts ... Trouble codes: P1221, P1516.
2002 Chevrolet Trailblazer EXT LT 4.2L No Start VIN: 1GNDT13S72
Thanks for the great help, almost everyone said the throtle body was at fault. I was fairly sure after testing but reluctant to beleive that changing the battery had somehow killed the throtle body. One dead give away was a response i got saying the trotle pla... Trouble codes: P1515, P1516, P1523.
2003 Chevrolet Silverado 1500 5.3L Abs Light VIN: 2GCEK19TX3
well thanks for all the help ,but i googled this one and got the right answer! yes google , the only fix on google was to remove the mouse nest from under the fuse box and repair the chewed off wire ! WELL I HAD TO LOOK, SURE ENOUGH A MOUSE NEST AND THE BLUE ...
2005 Chevrolet Colorado Sport LS 2.8L ignition relearn VIN: 1GCCS19885
thank you to all whom took time to reply. one thing we learned on working on euro cars is to have a battery charger on trickle to keep the system up, while koeo. many people don't believe in this but it will stop you in your tracks and make you start all ove...
2005 Chevrolet Silverado 1500 LS 5.3L radio VIN: 1GCEK19B75
Thanks to all who replied , this is a great forum. Sometimes we cann't see the forest for the trees . Turned out to be bad wiring to one speaker, repaired wires and replaced that speaker . Thanks again Mike
2007 Chevrolet Uplander LT 3.9L ABS module VIN: 1GNDU23107
OK, unplugged and plugged in the connector for the RR wheel sensor(hub) and the problem went away. I figured that it had a weak sensor in the RR and just reconnecting it was good enough to make it work. The owner decided to go ahead and drive it and it if come...
2001 GMC Savana 3500 SLT 5.7L No Start VIN: 1GDJG31R01
Ok problem solved. I focused on the fact that the tech 2 said VTD was disabeling the fuel and all my pcm information seemed wrong. After trying 2 computers and the original and they all had the same problem I knew it was not a pcm issue. I started testing wire...
1990 Oldsmobile Delta 88 Royale Brougham 3.8L compressor VIN: 1G3HY14CXL
Thanks to all who replied... You guys went above and beyond duty -- the culprit was a BAD Reman Compressor -- replaced again with a NEW Unit -- PERFECT ... Thank again IATN Brothers for all the help
1990 Oldsmobile Toronado Trofeo 3.8L Excessive Emissions, Poor Idle Quality, Stall, MIL Lamp on VIN: 1G3EV13C4L
Nothing was making sense on this one, everything on the replies had already been checked, then just on a hunch I hooked up an old MasterTech scanner we had laying around to compare data and it showed a code 34 instead of 43. Grounded the ALDL terminals and che... Trouble codes: 43 (Esc).
2006 Pontiac GTO 6.0L Ignition key cylinder VIN: 6G2VX12U26
I Read a little closer, On the installation portion of Alldtata the steering wheel lock is what was causing a blockage, Once I depressed it with the screwdriver and moved it the lock went right into place. Overall it was a very easy fix thanks to all who respo...
1999 Saturn SL1 1.9L No Start VIN: 1G8ZH586XZ
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