Posted by tt on March 07, 19100 at 09:58:59:
In Reply to: Re: Scheduled Service posted by tt on March 07, 19100 at 09:52:21:
: : I have a 99 GMC 2500 with 454. I noticed that everybody is talking about changing the diff fluid at 3K and 10K. In my service manual it indicates that the fluid levels need to be checked but not replaced. Is this service necessary at 3K and 10K? This is my first suburban so any suggestions on service schedule would be helpful.
: : Thanks
:
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: if u have the limited slip diff u need to change the oil at 3000 miles (per the owners manual)....my chevy dealer sure believes in refilling with mobile 1 gear oil ...tt
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forgot to mention that if u use the m-1 do NOT use gm's limited slip diff additive...tt