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Prev Professional Automotive Repair Technical Discussions for December 20, 2007
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Open Help Requests for GM
Help Request Answers
1999 Cadillac Seville STS 4.6L high rising idle VIN: 1G6KY5492X
at cold start,engine will idle normally for aprox.2to3 min gradually up to 2200rpm.ran through flow chart according to alldate chart.all readings from wiring normal.ref voltage, ground voltage.jumpered a to c terminals.(4.9volts.)reset idle air control to mini... Trouble codes: P0122 (throttle/pedel position snsr a input)
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1997 Chevrolet Camaro Z28 5.7L idle increases VIN: 2G1FP22P6V
engine increases idle when in park or neutral,as high as 2000rpm.has been to 3 or 4 shops, about all computor related parts have been tried. have not found any intake leaks.if you have run into this please let me know..
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1999 Chevrolet Astro 4.3L No Start VIN: 1GBDM19WXX
I'm pulling the rest of my hair out on this one. Towed in-no start. Customer claims she parked in garage the night before, came out next morning and would not start. I have 60 psi fuel pressure and good spark from coil and at several plugs that were checked. I...
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1999 Chevrolet Silverado 1500 4.8L Stall VIN: 1GCEK19VXX
Vehicle was towed in, starts and immediately dies, no stumble, shuts off like a light switch. fuel and spark is fine, injector pulse drops causing the stall. no codes present, vehicle was operating fine, symptom occoured to owner after short stop at a store. l...
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2000 Chevrolet Venture 3.4L No Start VIN: 1GNDX03E6Y
Harness was repaired carefully and methodically. Once repaired vehicle would crank but not start. Second inspection indicated that MAFF sensor had fire damage and center was blow n out. Replacement of MAFF sensor completed and vehicle started immediately but w...
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2000 Chevrolet Silverado 2500 6.0L Poor Idle Quality, Hesitation, Misfire VIN: 1GCGK29U3Y
missing on even cyl acts like it is running out of fuel under load even in park
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2002 Chevrolet Tracker 2.0L heat VIN: 2CNBJ13C22
hi all... we are all a lil stumped on this one customer had her car towed in for an "extreme" over heating issue. after pulling it in and getting it to operateing temp i called the customer and tried to varify what was going on and she said the reason she had ...
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2002 Chevrolet Impala 3.4L Misfire VIN: 2G1WF55E82
car came to us with a miss on cylinders 1 and 2..the miss only occures at a snap accerleation on throttle, then it will miss continuously until the car is shut off for a couple of minutes. restart engine and no missfire detected...if you bring rpm up slow and ... Trouble codes: P0300
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2003 Chevrolet Silverado 3500 LS 6.6L Electronic VIN: 1GBJK39143
truck came in and code p0708 was present. went and replaced shift selector switch. drove truck around block but the check engine light still stayed on. cleared out codes but upon starting truck again check engine light came back on. have replaced this switch o...
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2003 Chevrolet Silverado 1500 4.8L MIL Lamp on VIN: 2GCEK19V43
gauge was showing 210 KOEO (engine was 160) at time when compared.The CTS was cracked internally.Also gauge showing wrong reading. Trouble codes: P1115 (circuit intermitant coolant)
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2004 Chevrolet Silverado 1500 5.3L module VIN: 1GCEK19T24
vehicle came in with 4wd inop. first tried waking up the control module by removing t/c fuse, no go.then replaced the module and removed fuse for that module,still unable to communicate with transfer case control module. we tested all the powers and grounds go...
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2004 Chevrolet Aveo 1.6L client gets shock every time she leaves the car VIN: KL1TD62644
We have all gotten a little zap the odd time when exiting a vehicle, but this poor client has to use her elbow to shut the drivers door because the shock hurts so much. The longer the trip, the worse it gets. On her first visit to us with the complaint I immed...
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1999 GMC Safari SL 4.3L code VIN: 1GTDM19W0X
good afternoon. thanks in advance for any help/advice given the problem i`m having is the van wont run, keeps setting code p1626 loss of serial data with vtd. replaced the passlock part of the ignition switch. i did the relearn and everything was fine for a ...
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2000 GMC K2500 Sierra SLT 5.7L No Start, no module comm VIN: 1GTGK29R4Y
Intermittant crank no start, No communication using tech 2 Any Ideas,common things to look for?
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2004 Oldsmobile Alero GL 2.2L igintion lock cylinder VIN: 1G3NL52E04
good morning, how to remove lock from cylinder when key wont turn. thanks joe
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1987 Pontiac Firebird Trans Am 5.0L battery VIN: 1G2FW21F3H
This car battery is constantly being discharged. Voltage gauge on dash panel shows discharge, but at the battery I have over 14 volt dc KOER. Run this vehicle for about ten minutes and battery is discharged. Thanks in advance for your help.
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2001 Pontiac Grand Am SE 2.4L Misfire VIN: 1G2NF52T71
Hello all, I'm looking for some info on this Grand Am. We've replaced the plastic coil cover housing 4 times in the last year or so. The cover itself seems to short internally and create a misfire/no-start condition. The past two times it has been cylinders 1 ... Trouble codes: P0300
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2002 Pontiac Grand Am GT 3.4L No Start, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1G2NW52E92
vehicle runs fine until warmed upand whenyou accel it starts to cut and continuously gets worse until the car won't even start. if you let if cool off then it will startand run again until warm, and so on and so forth
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2002 Pontiac Grand Am GT 3.4L Surge VIN: 1G2NV12E02
hey guys i have a 02 grand am, 3.4 liter auto trans.problem is a surge in third and overdrive under light acceleration,plugs wires and coils are new the customer installed them he also replaced tps sensor problem is still there now i have the car. fuel pressur...
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2002 Pontiac Grand Am SE1 2.2L bcm VIN: 1G2NF52F82
I purchased this car as a non-runner. After replacing the motor and getting it running, I have a light that says service vehicle soon. I cleared the BCM but it comes back right away and sets code 2601. There is no listing in All Data or the fix archives that e...
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2002 Saturn Vue 3.0L No Communication VIN: 5GZCZ63B32
Do any of you Saturn Techs have any communication problems w/ your tech 2 and Saturn Vue. We can communicate w/ the generic side, but not he GM vehicle specific. We can ping all the modules on the system, but when try to do a code pull on the modules, the PC... Trouble codes: 300 (Random Misfire), 301 (Cylinder 1 Misfire), 303 (Cylinder 3 misfire), 700 (Transmission failure code sent to PCM)
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Fixes & Summaries for GM
Fix/Summary Answers
2000 Buick Century Custom 3.1L air bag VIN: 2G4WS52J8Y
hey all thanks for all the info, i figured it was the clock spring but was not sure. as it was my sisters new used car i went ahead and changed it out and it took care of all the problem. now if i could just change out my sis. thanks
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1994 Cadillac Seville SLS 4.6L Rear Auto Level Control, Trunk Pulldown Motor Sche VIN: 1G6KS52Y8R
Thanks to all who replied. Especially George for diligently working through fax challenges in support of the PASS Key circuit. Trunk pull down problem caused by bad connection at the trunk latch switch not completing the gnd leg of the circuit to the pulldow...
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1996 Chevrolet Tahoe 5.7L gauges VIN: 1GKEK13R3T
first i want to thank every who responded so fast pete,greg,bill,frank& every one else well we are going to call this one fixed we checked the wires going to the insterment panel and found that the ground was shorted to voltage,we could not find where it was s...
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1998 Chevrolet Astro 4.3L No Start VIN: 1GCDM19W9W
WELL I DECIDED TO REMOVE THE IGNITON LOCK CYLINDER AND I TOOK A PAPER CLIP AND KIND OF TRACED ALONG THE LOCK CYLINDER TO SEE WHERE THE MAGNET WAS AND SURE ENOUGH THER WAS NONE.I WENT TO LOCAL DEALER TO SEE THIERS AND RIGHT AWAY I SAW THE MAGNET.I INSTALLED THE...
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2000 Chevrolet S10 2.2L Unknown VIN: 1G0CS14542
Many thanks for the helpful suggestions regarding this vehicle, we found a shorted solenoid in the transmission that actually caused the dash cluster to fry. We suggested to the customer that as long as we were in the trans we could fix it as well as send the ...
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2000 GMC Savana 1500 5.7L fuel gauge VIN: IGDFG15R6Y
THANKS FOR THE RESPONSES. MY CUSTOMER HAS DECIDED TO WAIT TILL NEXT MONTH TO DO REPAIRS. I RECHECKED ALL GROUNDS AND CONNECTIONS AGAIN. I FEEL THAT THE VOLTAGE COMING FROM THE PCM IS INCREASING TO MUCH WHEN VEHICLE IS RUNNING. I WILL UPDATE THIS AFTER REPLACIN...
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2005 GMC Sierra 2500 HD 6.0L No Start VIN: 1GTHK29U65
Well, after looking all around the problem we decided to run the truck on the flush machine canister and it ran fine. We had ruled out a fuel problem because it was not contaminated and we always had good fuel pressure. When cranking cold it would wash the cyl... Trouble codes: P0336.
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1995 Oldsmobile Aurora 4.0L heater VIN: 1G3GR62C7S
The heater core was plugged and the feed port from the engine to the heater core is plugged. Unfortunately, the customer opted not to fix the car.
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1999 Oldsmobile Alero GL 3.4L Traction Control VIN: 1G3NL52E4X
Thanks to all that replied: Both Right Side Wheel Speed Sensors Would Intermittently Go Open Replaced Both & All Is Well
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1996 Pontiac Grand Am SE 2.4L MIL Lamp on VIN: 1G2NE12TXT
well i must say that all the time spent checking powers and grounds and ohming components out that i finally went for it and went for broke and tried a new pcm,and it is out of my bay and fixed. i am not all together sure why this was all happening but the bo... Trouble codes: P0440 (evap system malfunction), P1601 (loss of serial data).
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