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Chevy Silverado and GMC Sierra 4x4 Questions

236 messages,  Last post on Nov 17, 2009 at 5:35 AM

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What is this discussion about? Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Truck


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#126 of 236
Re: LT245 tire pressure [tafid] by obyone
Nov 27, 2008 (1:38 am)
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Replying to: tafid (Nov 26, 2008 5:54 pm)

that is exactly what you should be doing.
#127 of 236
Re: LT245 tire pressure [obyone] by tafid
Nov 30, 2008 (11:45 am)
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Replying to: obyone (Nov 27, 2008 1:38 am)

Thanks, but the lower psi is 45 psi for LT tires. My door label wants the Silverado LT 1500 to run 'P' not 'LT' tires. This says it will be 35 psi max, which is where I should be.
My lesson learned, do more homework before buying.
 
 
#128 of 236
Re: LT245 tire pressure [tafid] by obyone
Nov 30, 2008 (1:37 pm)
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Replying to: tafid (Nov 30, 2008 11:45 am)

The P or passenger tire like the Michelin LTX M/S has a max psi of 35#. Being a passenger tire 30-35# will give you the best ride. However, running LT tires which are designed to be installed on the 2500 and 3500HD with more belts and a stiffer sidewall should have no problem running at 38-40# with no load on a half ton truck. I can imagine your ride at 45 psi.
#129 of 236
04 Sierra 2500HD, Front End Growl/Grind in 4Hi/Lo by pkeagle
Nov 30, 2008 (7:35 pm)
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Facts:
*There is a Growl/Grind coming from the front driver side as far as I can tell.
*Noise is present during deceleration 30mph and under.
*Noise can not be heard during acceleration.
*Noise exists while coasting in neutral as well.
*There are no visible leaks anywhere?
*Noise is amplified while turning.
*Noise goes away after shifting back into 2WD.
*There seems to be no issues shifting into and out of 4WD Hi or Lo.
*Tire wear is consistent and even.
*Front inside brake pads are not engaging rotor on either front wheel.
 
Actions:
*Changed out front differential gear oil. Drained a purplish, thick oil w/ what looked like metal flakes/sparkles. Magnetic drain plug had a few small splinters. (<1/8") Refilled w/ Valvoline 80W90 Synthetic Gear Oil - Noise still there. *Local performance shop seems to think it might be a wheel/hub bearing assy. If a bearing, would the noise be consistent during accel and decel in 2WD or 4WD? So I have my doubts about this being the issue. Questions: *Does the front differential disengage during decel or is it engaged all the time in 4WD? *If it does disengage, what controls this? Front Axle Shift Motor? *What do I look for to tell if it is a CV Joint? *Any suggsestions or help is appreciated!!!
#130 of 236
Re: 04 Sierra 2500HD, Front End Growl/Grind in 4Hi/Lo [pkeagle] by dans04z71
Dec 07, 2008 (12:40 pm)
Reply

Replying to: pkeagle (Nov 30, 2008 7:35 pm)

I to am having this exact same problem. I took mine to a shop and they told me it was the clutches in the transfer case. As for the CV joints i dont think it would be those because you would still hear them no matter what. If you find anything out let me know.
#131 of 236
Re: 04 Sierra 2500HD, Front End Growl/Grind in 4Hi/Lo [dans04z71] by bruce48532
Dec 08, 2008 (8:01 am)
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Replying to: dans04z71 (Dec 07, 2008 12:40 pm)

I think it is the cluches in the transfer case, I just rebuild the transfer case and notice just today the growling were as before I rebuilt it and the 4wd was not working you did not hear the noise.
#132 of 236
Re: 04 Sierra 2500HD, Front End Growl/Grind in 4Hi/Lo [bruce48532] by dans04z71
Dec 08, 2008 (4:36 pm)
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Replying to: bruce48532 (Dec 08, 2008 8:01 am)

So that fixed it then you hear no more growling in it or do you? how much did it cost you to rebuild it?
#133 of 236
Re: 1995 Chevy 1500 extcab 4x4 5 speed Standard [soldiers47] by davey_donut
Dec 12, 2008 (8:09 pm)
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Replying to: soldiers47 (Feb 02, 2008 12:06 pm)

Can you let us know what was wrong with your 4WD? I have same problem with 2000 silverado. Driving in woods a stick lodged under truck near transfer case and now 4wd HI won't work. Only 2Hi and 4Low work. Thanks.
#134 of 236
Re: 04 Sierra 2500HD, Front End Growl/Grind in 4Hi/Lo [dans04z71] by bruce48532
Dec 13, 2008 (4:15 pm)
Reply

Replying to: dans04z71 (Dec 08, 2008 4:36 pm)

Still have the growling, I think its part of the design?
 
The cost, $175 timing chain, 10 cluch disc apx $3.00 each, Anitrobic gaskit sealer $17.00, 3 quarts Gm Trans fluid $24, 3 shaft seal $15 apx ? can't remember the exact price. and 8 hrs labor, first time rebuilding the transfer case.
 
One thing I have not check out, it appeared to me there was a adjusting screw for the cluch plates. Only two of the clutch plates were fried the other eight still looked good. The point being I think maybe I could have adjusted it and it would have been good for another 20-40k miles.
 
I put apx 80-100 hrs a year on it plowing every year so it has held up good.
#135 of 236
Lost in Inventory 2007 Silverado 2500 by rudy
Dec 14, 2008 (8:56 am)
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I was shopping for a new Silverado 1500. The dealer said he had a new 2007 Silverado 2500 which had been "lost "in his Inventory which had an MSRP of $30,000 that he would sell for $20,000. When I checked on Edmunds I found 2 other dealers with similar deals on the 2007 model. Does anyone know whats up.? Other then gas mileage do you think the the 2007 2500 is better than the new 2008-9 1500?

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