What the heck - The 1947 - Present Chevrolet & GMC Truck Message Board Network

navysnipe · 09-28-2011, 07:11 PM

OK, here is the story. My 01 1500HD silverado normally runs great and I have had few problems with it except the standard stuff that happens up here in the northeast. Things like brake lines rusting out...no problem, brakes lasting only 50K miles...again no problem, and the common servo's not working correctly in the AC system again no problem. Things like this that I can repair or attempt to repair and they stay fixed. But here is the rub with my truck. I had a vibration in my drive train, i thought no problem I changed two of the U joints and the carrier bearing on the drive shaft. Well guess what? Vibration from 25 to 30 MPH drives me nuts. I've tried to move the carrier bearing forward and backwards and sideways but still the same problem. I think the drive shaft may need to be balanced, well no place in Maine does that...or so I am told. The thing was really rusty and may have thrown a weight. Another problem I am having is whenever I put the truck up on my ramps to work on it or park it on an aggressive angle I get an ABS and emergency brake light on which means to me a fault in the ABS system. Put it back on relatively level ground and like magic the problem clears up every time. Another "minor" problem I have is the AC sometimes misbehaves on really hot days. The compressor will not engage at idle and will blow hot until you get going down the road. I am an AC tech and it is driving me crazy all the pressures are OK under a load and at idle(when it runs). I think the BCM is faulty but that I can live with for now.

Any thoughts from anybody, suggestions appreciated
Navysnipe

**truckdude239** · 09-29-2011, 12:07 PM

tnt?

navysnipe · 09-29-2011, 05:21 PM

Believe me I think about a little TNT .... every time I drive it.

Navysnipe

**truckdude239** · 09-29-2011, 09:43 PM

http://www.brooklinemachine.com/ is one that balances
http://www.austinmachine.com/
http://www.newenglandtrans.com/services.asp?service=748

http://www.google.com/search?q=drive...w=1920&bih=950

navysnipe · 09-30-2011, 05:35 PM

Thanks for the post on drive line links. I forgot to mention that its a daily driver and I need it to drive my kids around in every day 4 boys. But the South Portland one is promising and I may take a day trip down there.

Navysnipe

**truckdude239** · 09-30-2011, 06:08 PM

np glad i could help

navysnipe · 10-01-2011, 09:13 AM

Anybody else had problems with their ABS? Sounds to me like there is something that is not meeting its permissives for a reset. like a valve that is not in its "at rest" position you know stuck up or half way. Especially since it only does it when the truck is not level. It there any way to flush the ABS module out? I replaced all the brake lines and didn't even think about that. sorry for the navy terms but thats my life. I just can't stand not knowing whats wrong.

A well understood problem is half solved

Navysnipe

**truckdude239** · 10-01-2011, 11:03 AM

herei found this on the abs light http://repairpal.com/abs-light-due-t...ttery-tray-812

navysnipe · 10-01-2011, 05:57 PM

Thanks, but since I live in the northeast I regularly clean all my grounds. Like I said it only comes on when the truck is at a strange angle like on ramps or on hill

Navysnipe

chinquipin · 10-07-2011, 08:06 PM

May have nothing to do with your problem, but i have multiple gm vehicles and abs light and/or vibration usually has been hub assembly in my experiences.

09-28-2011, 07:11 PM	#1
navysnipe Registered User Join Date: Apr 2008 Location: Sabattus, Maine Posts: 84	What the heck OK, here is the story. My 01 1500HD silverado normally runs great and I have had few problems with it except the standard stuff that happens up here in the northeast. Things like brake lines rusting out...no problem, brakes lasting only 50K miles...again no problem, and the common servo's not working correctly in the AC system again no problem. Things like this that I can repair or attempt to repair and they stay fixed. But here is the rub with my truck. I had a vibration in my drive train, i thought no problem I changed two of the U joints and the carrier bearing on the drive shaft. Well guess what? Vibration from 25 to 30 MPH drives me nuts. I've tried to move the carrier bearing forward and backwards and sideways but still the same problem. I think the drive shaft may need to be balanced, well no place in Maine does that...or so I am told. The thing was really rusty and may have thrown a weight. Another problem I am having is whenever I put the truck up on my ramps to work on it or park it on an aggressive angle I get an ABS and emergency brake light on which means to me a fault in the ABS system. Put it back on relatively level ground and like magic the problem clears up every time. Another "minor" problem I have is the AC sometimes misbehaves on really hot days. The compressor will not engage at idle and will blow hot until you get going down the road. I am an AC tech and it is driving me crazy all the pressures are OK under a load and at idle(when it runs). I think the BCM is faulty but that I can live with for now. Any thoughts from anybody, suggestions appreciated Navysnipe

09-29-2011, 12:07 PM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,217	Re: What the heck tnt? __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube Last edited by truckdude239; 09-29-2011 at 04:48 PM.

09-29-2011, 05:21 PM	#3
navysnipe Registered User Join Date: Apr 2008 Location: Sabattus, Maine Posts: 84	Re: What the heck Believe me I think about a little TNT .... every time I drive it. Navysnipe

09-29-2011, 09:43 PM	#4
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,217	Re: What the heck http://www.brooklinemachine.com/ is one that balances http://www.austinmachine.com/ http://www.newenglandtrans.com/services.asp?service=748 http://www.google.com/search?q=drive...w=1920&bih=950 __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

09-30-2011, 05:35 PM	#5
navysnipe Registered User Join Date: Apr 2008 Location: Sabattus, Maine Posts: 84	Re: What the heck Thanks for the post on drive line links. I forgot to mention that its a daily driver and I need it to drive my kids around in every day 4 boys. But the South Portland one is promising and I may take a day trip down there. Navysnipe

09-30-2011, 06:08 PM	#6
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,217	Re: What the heck np glad i could help __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

10-01-2011, 09:13 AM	#7
navysnipe Registered User Join Date: Apr 2008 Location: Sabattus, Maine Posts: 84	Re: What the heck Anybody else had problems with their ABS? Sounds to me like there is something that is not meeting its permissives for a reset. like a valve that is not in its "at rest" position you know stuck up or half way. Especially since it only does it when the truck is not level. It there any way to flush the ABS module out? I replaced all the brake lines and didn't even think about that. sorry for the navy terms but thats my life. I just can't stand not knowing whats wrong. A well understood problem is half solved Navysnipe

10-01-2011, 11:03 AM	#8
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,217	Re: What the heck herei found this on the abs light http://repairpal.com/abs-light-due-t...ttery-tray-812 __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

10-01-2011, 05:57 PM	#9
navysnipe Registered User Join Date: Apr 2008 Location: Sabattus, Maine Posts: 84	Re: What the heck Thanks, but since I live in the northeast I regularly clean all my grounds. Like I said it only comes on when the truck is at a strange angle like on ramps or on hill Navysnipe

10-07-2011, 08:06 PM	#10
chinquipin Registered User Join Date: Jun 2011 Location: East Tennessee Posts: 35	Re: What the heck May have nothing to do with your problem, but i have multiple gm vehicles and abs light and/or vibration usually has been hub assembly in my experiences.



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