Hello everyone, if I may start out with a question, my four wheel drive 98 GMC when it was new, a fleet truck I think, it had a 3.42 ratio and a positraction axle. The RPO codes showed,
GU6 : AXLE REAR, 3.42 RATIO
G80 : AXLE POSITRACTION, LIMITED SLIP
I suspect that has long time lost that ability as I can 'light up' tire on payment quite easily if I try. What I'd like to know is, has anyone fixed it so it works again like it was from the factory or went with some other type of locking set up?
I don't know what size the rear end is, sorry.