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Prev Professional Automotive Repair Technical Discussions for September 4, 2007
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Open Help Requests for GM
Help Request Answers
1984 Buick Century Custom 3.0L alternator VIN: 1G4AH19E9E
after replacing the alt. and battery (at cust. request) the vehicle still wouldn't charge. i found that the bulb in the instrument panel completes the circuit to activate the alt, and i checked it and found it to be missing. i installed a new bulb and socket i...
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2002 Buick Century Custom 3.1L Excessive Emissions, MIL Lamp on VIN: 2G4WS52J52
I have this 2002 buick century that is running rich long term trim is -25% The O2 sensor and injectors have been replaced The other sensors such as TPS MAP and MAF seem to be operating within normal parameters anyone have any suggestions Help would be greatly ... Trouble codes: P0172
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2002 Buick Century Custom 3.1L Excessive Emissions, MIL Lamp on VIN: 2G4WS52J52
I have this 2002 buick century that is running rich long term trim is -25% The O2 sensor and injectors have been replaced The other sensors such as TPS MAP and MAF seem to be operating within normal parameters anyone have any suggestions Help would be greatly ... Trouble codes: P0172
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2004 Cadillac CTS 3.6L abs VIN: 1G6DM57764
This car displays service brake assist on the message center and disables abs and trac, their is a code for rt ft wheel speed sensor. We are changing the rt hub to take care of the wheel speed code but do not think that the service brake assist message will go...
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1997 Chevrolet Tahoe LS 5.7L brake booster VIN: 1GNEK13RXV
original problem: hard pedal- booster leaking vac., also master cyl. leaking at resivior. after replacing the booster 3 times and master 2 times there is squeak that appeared after first replacement that is pretty loud. i have bleed, and lubed all i can get to...
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1997 Chevrolet C1500 5.7L No Start, blows ECM fuse VIN: R9VZ109488
Truck was towed in. It had started to cut off at times and when it cut off it blew the ECM-B fuse. Customer would replace the fuse and drive away until fuse blew again. Now it blows the fuse as soon as you turn the key on. We have found that if you unplug the ...
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1998 Chevrolet Blazer 4.3L intermittent no start VIN: 1GKDT13W6V
Hey guys dont know where to start with this one customer complains of intermittent no start but every time it is broght to the shop starts fine, checked PCM, Checked Grounds,Checked starter just dont know where else to go any help greatly appeciated
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2005 Chevrolet Silverado 3500 LS 6.6L rotors VIN: 1GBJK34235
After replacement of parts the rear brakes and rotors worn prematurely within 3k miles. Found that the rear brakes are getting to a temp of 350-400 deg within a 20 mile test drive.Front brakes are at 150 deg. Was told that in some cases the rear brake hoses ca...
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2003 GMC Sierra 1500 SLE 5.3L Air flow and temperature VIN: 1GTEK14T13
Customer had complained of the air conditioning switching modes by itself and hot air coming from one side of dash and cold from the other. He stated originally it was very intermittent then became real regular. We did easily duplicate the complaint and found ...
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2006 Pontiac G6 3.5L starter VIN: 1G2ZG55886
Hello everyone and thanks for any input into this one. This G6 intermittently will not crank if you leave it sit with the windows up(or at least it seems) especially when its good and warm out. The customer will get in to start, and no starter action. The ligh...
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Fixes & Summaries for GM
Fix/Summary Answers
1970 Cadillac Deville 7.7L A/C system
I had limited time of repair, I hope the vehicle returns so I can try some of your ideas. As I said before, the pressure readings are OK while driving. The problem may lye at some vacuum source inside the vehicle.
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1993 Chevrolet Lumina APV 3.8L Surge, MIL Lamp on VIN: 1GNDU06L7P
Gentlemen We have this car fixed. We got many excellent replies and looked at them all. Some things we already tried and others were excellent in content and had many good ideas. We were looking hard at the TCC operation and to that end we road tested with t... Trouble codes: 88 (PCM Reset), 99 (Power management problem), 65 (Cruise control servo position sensor), 66 (A/C pressure sensor/circuit), 67 (Faulty cruise control switch), 69 (High pressure switch circuit).
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1994 Chevrolet Caprice Classic 5.7L speedo VIN: 1G1BN52P8R
Thanks for the replys guys. Well since it was different problem than we had the first time we decided to return the new cluster and gert another 1. plugged it in and everything started working. I guess sometimes stepping back is better than trying to jump way ...
3
1996 Chevrolet Cavalier 2.2L battery VIN: 1G1JC5242T
Thank you, thank you, thank you. Will nailed it, grounded the flasher ground wire and it helped. Then grounded the ALDL ground and the draw disappeared. Someone had been here before me and had dropped the ground in the upper left of the Instrument panel. R...
3
1999 Chevrolet p30 7.4L compressor VIN: 1GBLP37J8X
thanks to all that replied. Especially Kent from Florida and Clarence from California. So the voltage that i am seeing on the signal circuit( ecm to relay) with the relay plugged in is normal. When the relay is not activated it will have 12 volts through the r...
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2000 Chevrolet Express 3500 5.7L NO REVERSE, 1st ONLY VIN: 1GCHG35RXY
Hello everyone and thanks for the help with this one. I received many replies about burned out bands due to cracked servo pistons as well as clutch drum pistons due to excessive pressure. From what i gather from the replies, the pressure plates in the conver...
7
2000 GMC K2500 Sierra SL 5.7L door lock VIN: 1GTGK29U6X
I know I will get a bad rating on this but here gos I worked at finding a bad ground on if off and on for two days I was getting a little tired of looking at it so I took Glens advice and wired in a bosh style relay giving it a ground on the opsit side or wir...
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1997 Oldsmobile Bravada 4.3L turn signals VIN: 1GHDT13W9V
As usual, you guys are right on the money. I especially found value in the fact that I could, as pointed out, wiggle the emergency flasher knob and correct the problem. Thanks, Will from Ohio!!! Thanks to all of you!!! I replaced it and have no further prob...
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2003 Saturn L200 2.2L oil leak VIN: 1G8JU54F43
Thanks for all the help guys. Sometimes it's the simplest jobs that get the best of you. This car had two leaks. We first diagnosed the worst as a trans front seal. Turned out it was a cracked case!!! We put it all back together and then the rear main seal ...
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