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Prev Professional Automotive Repair Technical Discussions for February 24, 2012
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2004 Buick Park Avenue 3.8L Rap VIN: 1G4CW54K04
I have a 2004 park avenue that the RAP will not shut off, the coustomer had a complante about a dead bat and when she brought it the radio and the power windows will not shut off, I have no codes, I have checked the RAP relay and its good. Please help
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2006 Cadillac Escalade EXT 6.0L n/a VIN: 3GYEK62N86
Truck came in for whineing sound.Sounded like a suspension problem.Upon inspection it seamed like this sound is coming from the transfer case or tranny.Its hard to tell.There is not much i can do,I put the truck in neutral spin the rear and front tires forward...
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1994 Chevrolet C1500 Cheyenne 4.3L brake light switch VIN: 1GCDC14Z6R
customer came in with no tail lights or brake lights. Tail light problem turned out to be the headlamp switch, still had no brake lights. had power to brake switch , if I jumped wires at switch, the lights worked, I installed a new switch and they still do not...
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2000 Chevrolet S10 2.2L Mechanical VIN: 1GCCS1954Y
truck had bad motor, I replaced engine with one with new rod bearings , oil pump ect. drove about 20 miles truck quit. was out of time pulled down and pin in cam was broke into. Relaced cam drove about 10 miles and once again pin in cam broke again. Cam turns ...
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2004 Chevrolet Express 1500 4.3L Brakes VIN: 1GCFG15X84
Van stops ok. But, when you very slowly & gradually come to a stop in "stop-&-go" traffic; at the last split second before stopping the van feels like you hit an ice patch. If you apply the brakes heavily, no problem. Van had leaking PS hose to hydro-boost br...
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2004 Chevrolet Silverado 1500 4.8L MIL Lamp on VIN: 2GCEC19VX4
Hi All, One of my customers has a 2004 chevy truck, 4.8liter engine that in a years time or 9 thousand miles that throws a p0430 code. It first came in with a p0430 code and a rattling converter. Replaced convertor and all showed good then in 1 year 8 thousan... Trouble codes: P0430 (catalyst system low efficiency bank 2)
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2004 Chevrolet Corvette 5.7L MIL Lamp on
has aftermarket k&n air filter induction -cleaned maf-has aftermarket exhaust-engine data 1 said car was in open loop after running for 30 min. after codes were cleared it seemed to go into closed loop? i am using anautel maxi das 708 it would not let me reset... Trouble codes: 174 (bank2 lean-longtermavg13-15), 171 (bank 1 lean-lt trim avg 13-15)
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2007 Chevrolet Tahoe LTZ 5.3L Misfire VIN: 1GNFK13067
Thanks in advance,I have this 07 tahoe that has v4 cylinder deactivation and it came in for some front end work and exhaust manifold gasket(r/side).It was here for a few day after work was done drove great.Customer takes it and 2 days later comes back with eng... Trouble codes: P0300, P0306
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2007 Chevrolet Suburban 1500 Z71 5.3L Glass hatch VIN: 3GNFK16397
Hello all you Tech. This 2007 Suburban is going to drive me to drink. When I turn on the A/C, then release the brake pedal the rear glass hatch will open, turning on the dome lights. If the A/C is off everything work ok. I have replaced the BCM also we install...
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2009 Chevrolet Express 1500 5.3L ipc VIN: 1GCFH15409
speedo drops out shift ind. switches between p and what ever gear your in for a split second, also during cond clicking noise in ipc, and trans shifts to 2nd. Intermittantly abs light on code c0055 0f sets
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2001 Oldsmobile Alero GX 2.4L Hesitation, Stall, No MIL after stall VIN: 1G3NK12T11
Typing for my brother, Fred. We thought we had this problem solved with the ignition switch (see related history). The car ran fine for several miles before the stall occurred again. The engine will abruptly stall on a snap throttle. Sometimes, it will only st...
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2006 Saturn Vue 2.2L Mil VIN: 5GZCZ23D86
I cannot come up with any information for this dtc. I contactd the service department of our GM dealer and it wasn't in their material either. The CEL is inlluminated with no driveability concerns. Does anyone, possibly a former Saturn tech, have any info on w...
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Fixes & Summaries for GM
Fix/Summary Answers
2001 Buick Regal LS 3.8L trans. shifting VIN: 2G4WB55K91
the problem was broken & rubbed through wiring under the hood where it runs by the accumulator.there was so much tape at this location & the wires very small which made it difficult to see. we cut open the harness, repaired the affected wires, retaped & insula...
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2002 Cadillac DeVille 4.6L battery VIN: 1G6KD54Y42
Thank you to all that replied.We reassembled and sent this Caddy on its way.with an amp clamp on the battery and a tech 2 powered up,we never could "catch" a module staying awake after hundreds of door,trunk,hood,and key cycles.the customer was getting angry a...
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2004 Cadillac CTS 3.6L block VIN: 1G6DM57734
Customer took car home on tow truck don't know what his plans are.Thanks to all for responding everyone said take out the bottom.The best tip was about using 4 jack stands under the cradle instead of some sort of flat tray stand GM said to use.This what concer...
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2007 Chevrolet Trailblazer LT 4.2L calipers VIN: 1GNDS13S47
Firstly, I would like to thank the techs that responded. Brake fluid was contaminated, replaced master cylinder and bled whole system twice. Test drove on and off for two days, no more lock-up of any sort. Customer came to pick vehicle up and admitted to maybe...
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1995 GMC K1500 Sierra SL 5.7L brake pedal VIN: 2GTEK19KXS
Put another master cylinder on no change. Have great pedal with front hoses piched off. Re-examined pad contact points etc. still no obvious issues. Got with Identifix and tested pedal drop of 3.1 inches or less with no vacumm on booster and normal pedal app...
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2000 Saturn LS2 3.0L 1-2 shift VIN: 1G8JW52R3Y
Thanks for the replys. Although I never did duplicate this fault, I went ahead and programmed the TCM with the latest calibration file and explained to the customer that the fault still may be present and would more than likely involve at least the PC solenoid...
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