I have a GU6 RPO code which tells me what the axle ratio is. I'm not up on this stuff...does that also indicate what differential I have? about to change the fluid out and want to make sure I get the right kind.
identifying differential?
- Thread starter sunliner
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Mooseman
Moderator
Only thing you would need to know is if it's a limited slip diff or not. The only ones that got those are the AWD trucks such as the Bravada, Rainier and 9-7x. All the others, 4x4 or 2wd, got either the open diff or G80 locker. Both of these do not need an additive. The limited slip does.
