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Prev Professional Automotive Repair Technical Discussions for January 18, 2011
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1998 Buick Century Custom 3.1L Stall VIN: 2G4WS52M5W
does anyone know where the fuel pump resistor is located on this vehicle, and what does it look like? from what i am reading this could very well be the problem. Trouble codes: P0230
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2002 Buick Rendezvous CXL Plus 3.4L charging VIN: 3G5DB03E02
ok here goes. vehicle came in not charging. tested battery and alternator. battery bad and alternator only putting out 12v. Replaced battery and alternator. couple of weeks later vehicle came back in not charging. Replaced alternator. all was good vehicle is b...
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2011 Buick LACROSS 3.6L Rear Diff. VIN: 1G4GD5GDXB
Hello techs, this is an all wheel drive lacross with a driveline vibration.car is new and never in an accident.the vibration is transmitted through the vehicle.it happens under light acceleration from a cruise.it is not felt on a flat road in a coasting situat...
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1996 Chevrolet K1500 Suburban 5.7L Transfer Case VIN: 1GNFK16R4T
Customer stated 4x4 worked last winter. During the summer the 4x4 indicator switch lamps all would flash randomly.Now 4x4 lamps only light up when key first turned on.There is no 4x4 engagement or sensation.no 2hi lamp lite at anytime except start up. when ret...
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1998 Chevrolet Cavalier 2.2L Cuts out, Stall, MIL Lamp on VIN: 3G1JF12T9W
First of all it's a 2.4 T not a 2.2. For some reason it comes up a 2.2 on iatn. I am a G.M. tech of 22 years (or at least i thought i was) and i've never had anything like this. It seems like timing is off or something is interfering with crank signal. when yo... Trouble codes: P0335 (Ckp sensor a circuit problem), P0341 (Cmp sensor circuit out of range)
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2003 Chevrolet Silverado 2500 HD 6.0L steering & b VIN: 1234567891
i have this 2003 chev pkp came in w/broken power steering pump shaft.put after market pump on after driving [...] all fluin blow out top of pump. so i replaced pump w/gm pump & same thing.could it have something to do w/hydro boost not to familar w/the pro...
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2004 Chevrolet Silverado 3500 6.0L abs VIN: 1GCHK23U14
Help GM Techs!! This truck has the abs and brake light (in cluster) illuminated. When we tried to scan for codes we could not communicate with any scan tools. We found dlc fuse blown, replaced and still were getting comm. errors with various different high qua...
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2002 GMC Envoy SLE 4.2L No Start, Stall VIN: 1GKDT13S22
Customer said vehicle died going down road, it will start for just a second(until oil pressure gauge starts to rise), then died and has no compression on attempt to restart. Both codes say to do tests with engine running,buuttt,it will not. We examined the exh... Trouble codes: P0114, P1514
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2003 GMC Sierra 2500 HD 6.6L Starter VIN: 1GTHC29143
Please help, this truck is costing me money! This truck 1st came to me about this time last year with a starter that clicked intermittently & would not engage. I replaced it with a new aftermarket starter. This starter went about a week & developed an intermit...
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2004 GMC Envoy SLE 4.2L Air suspension VIN: 1GKDT13S44
Rear suspension sags overnight- No flash codes on air switch. Bypassed compressor by retrofitting schrader valve to lines- suspension and lines hold air for days. We blamed compressor, changed it, vehicle still sags overnight UNLESS you pull the ECAS fuse. Did...
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2007 GMC Sierra 1500 SLE 4.8L security VIN: 1GTEC14X37
Hello to all, Well this is a friends truck he scanned and got a relearn code. He took it to gmc dealer they updated theft module and key relearn. Dealer said it didnt work that it needs further troubleshooting, so I decided to get more opinions on what should...
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2002 Saturn Vue 3.0L No commun VIN: 5GZCZ63B62
Scan tool does not communicate with my brick or genisys conector is fine and power and grounds are ok is there a normal problem with these or do i need to start pulling every thing a part thanks for your help john
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Fixes & Summaries for GM
Fix/Summary Answers
1966 Buick Skylark 4.9L Stall VIN: 1BH2A3AA4A
Thank You Everyone!!! Think I found the problem, I hope. Ripped open the wiring harness and inspected the resistor wire. Was expecting a small wire, didnt think it would be 3ft long. It looked ok but did find a bad wire, really soft looked like oil soaked from...
75
2007 Cadillac SRX 3.6L Loss of monitors VIN: 1GYEE63717
After verifying power and grounds to ecm, and verifying that power is not lost when cranking I replaced the ecm. Car has been driven for 3 days .All monitors have run. Customer passed I/M test. Thanks everyone for your help.
12
2007 Chevrolet Trailblazer LT 4.2L Hesitation, Surge VIN: 1GNDT13S67
Well, this appears to be fixed. Thanks to everyone who responded, especially Dave from Louisiana, who hit the nail on the head. After doing all the other non-invasive testing, I decided to pull the converter out. In the process, I found a considerable amoun...
9
2007 Chevrolet Equinox LT 3.4L gauges,door locks,lighting,traction control VIN: 2CNDL73F47
Thanks to everyone for the tips,I was able to program the module but not with Legacy pass thru . Talked to GM tech help they had me do remote program/replace, starting out with new module in car & ignoring everything about turning off key and replacing module,...
8
1998 GMC K3500 Sierra SLE 7.4L Misfire VIN: 1GTHK33J1W
Thanks for all the replies. Though I had a lot of good things to check, Joe nailed it in an indirect way and kept my thinking in the right direction. Since the customer was sure it did not miss before the intake gasket replacement and Joe mentioned the wire on...
7
2000 GMC Jimmy SLE 4.3L Transfer Case VIN: 1GKDT13W9Y
Thanks to all that responded. I ended up getting schematic from snapon reference website.Found no power from motor control circuts (module to encoder module) also found module severly coroded.replaced atcm (new gm) code c0308 went away but c0323 remaind.remove...
4
2000 GMC Jimmy SLT 4.3L Front Axle Solenoid VIN: 1GKDT13W6Y
It ended up being a defective encoder motor. We replaced it and all is fine.
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2001 GMC Yukon XL 2500 SLT 8.1L Cuts out VIN: 3GKGK26G71
everyone was spot on with this one and I appreciate all the feedback. Once we finally got the sensor out, it was apparent the new sensor was redesigned. there is an o ring that used to be half way down the shaft of the long sensor and that's been redesigned t...
11
2006 GMC Sierra 1500 SLE 5.3L air bag light VIN: 1GTEK19BX6
I did fix this truck,David from Pennsylvia had it right.did anti theft relearn with the tech2 and everything turn out ok Thanks Alot John.
9
2007 GMC Yukon SLT 5.3L MIL Lamp on VIN: 1GKFK13027
hey fellow techs thank you all very much for the replies,,,most of them were sending us in the right direction we ended up sending the truck to a local GM dealer to determine what the PCM was reading for the alcohol content in the fuel and to be reset with the... Trouble codes: P0172 (Bank one system rich), P0175 (Bank two system rich).
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1995 Saturn SL2 1.9L Surge, Cuts out, Misfire VIN: 1G8ZK5276S
Replaced coolant temperature sensor and symptoms seemed to go away. Customer picked up car and have not heard anything for about 3 weeks. Trouble codes: 19.
8
2007 Saturn Vue 3.5L Power Steering VIN: 5GZCZ63427
WELL THIS ONE WILL NOT BE FIXED BY ME. I CHECKED WITH GM ABOUT OPEN RECALLS AND THERE WERE NONE. ALSO VERIFIED THAT THE ALIGNMENT WAS GOOD AS WERE THE TIRES AND THEIR PRESSURES. CUSTOMER WAS CONCERNED ABOUT THE VALUE OF A SATURN SO HE DECIDED TO LOSE MONEY NO...
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