Noise when slowing down in 4WD - The 1947 - Present Chevrolet & GMC Truck Message Board Network

northerngmc · 11-14-2011, 05:06 PM

Winter has arrived and I had my truck in 4WD high. I noticed a noise when I let of the accelerator pedal. I put the truck into 2WD and the noise disappeared.

Any suggestions or where to start looking?

My plan is to check the transfer case and front diff fluid.

I did a quick check on the front shafts going out to the wheel and when I gave them a good shake both seemed fine.

Would front wheel bearings only be in use during 4WD?

Truck in a 2004 2500HD lly with 170 000 kms.

I have changed fluid in both the transfer case and front diff in the past 12 months.

11-14-2011, 05:06 PM	#1
northerngmc Registered User Join Date: Jan 2004 Location: Whitehorse YK Canada Posts: 2,651	Noise when slowing down in 4WD Winter has arrived and I had my truck in 4WD high. I noticed a noise when I let of the accelerator pedal. I put the truck into 2WD and the noise disappeared. Any suggestions or where to start looking? My plan is to check the transfer case and front diff fluid. I did a quick check on the front shafts going out to the wheel and when I gave them a good shake both seemed fine. Would front wheel bearings only be in use during 4WD? Truck in a 2004 2500HD lly with 170 000 kms. I have changed fluid in both the transfer case and front diff in the past 12 months. __________________ Blaine 59 GMC 9314 a.k.a. Whoopee 68 C20 50th Anniversary a.k.a. The Rat http://www.flickr.com/photos/northerngmc/ http://www.members.tripod.com/P-wee/index_032.htm 1.61803 is one H of a lot better than 3.14159, no really it is!



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