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Prev Professional Automotive Repair Technical Discussions for January 10, 2012
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Open Help Requests for GM
Help Request Answers
1996 Cadillac Fleetwood 5.7L throttle VIN: 1G6DW52P6T
this old cadillac is in very good condition except for the fact that it's limited at 76m.p.h.. At that speed the gaz pedal pushes up on your foot so i'm assuming that the traction control unit is working but why is it? No history on anything unusual before it ...
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2007 Cadillac Escalade ESV 6.2L suspension VIN: 1GYFK66857
The service suspension message is on and my tech 2 will not communicate with the vehicle. The tech 2 says (candi module not detected). I have checked all the grounds. Pin 5 of the dlc should be less than 1 ohm and i have 20 ohms. Any help would be appreciated.
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1969 Chevrolet Nova 5.7L Engine VIN: 1327WER456
Ok here is a fun one. Not so funny on my end. This is my ride. 1969 Nova with a 327 block. Last winter I had to park it outside will working on cars. I checked the oil and noticed antifreeze in it. Took engine apart. All gaskets looked fine. Had machine shop c...
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1999 Chevrolet Lumina 3.1L MIL Lamp on VIN: 2G1WL52M1X
hey guys i got this chev lumina that has a p0327 knock sensor circuit, i already replace knock sensor , replace connector,check wiring from ecm to sensor no shorted to ground or open circuit, has the ohms reading from sensor all the way to ecm connector,i repl... Trouble codes: P0327
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2001 Chevrolet Corvette Z06 5.7L steering lock VIN: 1G1YY12S01
One for you Goodwrench guys. Got this Vette that the Service Column Lock message is dislayed on dash. Recall for this problem was done at dealer in "04. Car cranks runs fine. Heard locking actuator apply a couple of times. This vehicle is a manual trans. Check...
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2004 Chevrolet Cavalier 2.2L No Start VIN: 1G1JC12F14
Vehicle first arrived at shop with a customer complaining of long start and buzzing noise in fuse bos undr hood, duplicated concern and found fuel pump relay humming removed and replaced and vehicle was fine for two or three days then occured again. fuel press...
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2006 Chevrolet Silverado 2500 HD LT 6.0L Abs Mod. Ses Light VIN: 1GCHK23266
I got a brain teaser for everyone. First off this is a diesel truck w/standard 6spd. Tranny.for some reason it wants to show a gas engine on vehicle build. The engine light and both abs and brake light on dash are on and service brakes flashes on drivers info ...
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2006 Chevrolet Silverado 1500 LT 5.3L Misfire, MIL Lamp on VIN: 3GCEC14Z76
Customer brought vehicle in and complained that the truck ran really bad for a little while and the check engine light was flashing. They said that after a few minutes it started running fine and the light went off. Vehicle test drove fine with no misfires. Fo... Trouble codes: P0300
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2008 Chevrolet Silverado 1500 WT 4.3L No Start VIN: 1GCEC14X28
Hello Company truck came in on hook DOA. Operator said he drove truck to work and shut it off, when he went out later it would not start. (Key to start position and nothing happens starter doesn't enguage) I hooked up scanner and got com with all modules bu... Trouble codes: U0100 (Loss of com with pcm)
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2010 Chevrolet Silverado 1500 WT 5.3L Air Bag Light VIN: 1GCSKPE38A
We programmed the SDM module with the Tech 2 through TIS2-Web. Cleared all codes in the SDM and the PPS system. Started the vehicle and the air bag light went out as it should. Then when the vehicle was started again the air bag light began flashing. There are...
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2000 GMC Jimmy Diamond Edition 4.3L transfecase motor VIN: 1GKDT13W8Y
To all valued techs ,this truck has me puzzled ,have checked all archives and followed all leads.Will not go into 4L will blink 30 sec then go back to last button (4H ,2H or 4auto ) all other selection work .Tech2 will communicate with ATC and NO CODES. First ...
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2005 GMC Canyon Z71 SLE 3.5L accessories VIN: 1GTDT13635
Vehicle starts and drives fine with all accessories working properly for one to two drive cycles, then (while driving) some of the accessories quit working ie. (Cluster, radio, door locks). Once this happens the vehicle will continue to run drive properly and ...
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2000 Oldsmobile Intrigue GX 3.5L low beams VIN: 1G3WH52H5Y
Vehicle has no low beams, bulbs are good, but has high beams and parking lights. This vehicle has no fog lights. Power but no ground to both low beams, ground seems to come from relay. If I manually ground the wire at each bulb it lights up but stays on since ...
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1994 Other GM HEAVY RESCUE 330CID Low fast idle
We purchased this used 1994 hme custom chassis rescue truck with a 6v-92 engine for heavy rescue hydralic tool operations for the department. The manufacturer, n.e.v., went out of business in the late '90's. We had the hydralic system installed professionally ...
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2001 Pontiac Grand Prix GTP 3.8L No Start, Stall VIN: 1G2WR52181
Question #1 Has anyone had repeat issues with NAPA MAF. sensors? #2 Napa lists the same sensor'99 to '01 yet when I looked on Identifix there are 254 Maf. failures for '01 and 4 or 5 for '99 and 2000. Anyone have any ideas or similar experiences. Gm sensor is ... Trouble codes: P0102
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2004 Pontiac Grand Am SE1 3.4L pcm VIN: 1G2NF52E64
Car came in would only crank for a half a second. Had B2965 Key in ignition circuit open, in BCM. Has U1000 in pcm and bcm and a U1255 in cluster. Replaced lock cylinder for B2965, that code is gone now. Car still only cranked for a half second, so we tried a ...
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Fixes & Summaries for GM
Fix/Summary Answers
2002 Chevrolet Impala 3.4L no start VIN: 2G1WF55E02
so i tried the bypass modual i was talking about.it was from new rockies.web site said that it goes after bcm to send signal to pcm to allow crank and fuel.well it doesnt all it does is bypass passlock sensor and wires to it.tried it anyway ,lasted 2 days,befo...
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2004 Chevrolet Colorado LS 2.8L Cuts out VIN: 1GCCS13814
Found a good shop in Orlando with a mobile repair guy. He was able to re-flash the ECM with the correct GM software, perform the key re-learn and did the crankshaft sensor re-learn for less money than going to the dealer and no towing since he came to me. Truc... Trouble codes: P601.
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1996 GMC Yukon SLE 5.7L starter VIN: 1GKEK13R9T
Everything checks out. The flywheel looks rough so am going to replace it under warranty, thank for all the help. I will let you know what happens.Brian
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1998 Oldsmobile Bravada 4.3L No Start VIN: 1GHDT13W1W
This one is gone. The injector was leaking down and the IAC was also bad. It had no high idle so got both issues handled. I am still wondering why the code P1351 would come up on extended cranking. I did not disconnect the coil wire to create a no start and s... Trouble codes: P1351 (ignition control circuit high).
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