GM 14-bolt FF Rear End with 149k miles
Hi to all, Our TV is a GMT400 1997 GMC K2500 7.4L Burb with 149k miles. It is 8-lug, 3.73, GVWR 8,600, with GAWR RR of 6,000 lbs for the full floater rear axle. We believe the rear end also has 149...
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If it really has the G80 (which is a 1/2T diff) then it has no clutches and the additive is moot.
I suspect you have a heavier diff though..
Can you check your owners manual? It should say if it requires additive.
I suspect you have a heavier diff though..
Can you check your owners manual? It should say if it requires additive.
