rpo codes

[stizkidz]

Do these 2 RPO codes mean anything:

GU4
and
G80

Also, I spun my front driveshaft and I noticed that both front wheels turn in the same direction. Does this mean that the front diff is LSD? Stock 10 bolts, by the way.

 

[divorced]

GU4 - 3.08 axle ratio
G80 - govlock

 

[teamroper1]

can't remember what GU4 is exactly but it is your gear ratio
G80 = locking rear differential

 

[smokkey1]

http://www.livefromthesanitarium.com/autostuff/GMRPOCodes.pdf#search='GM%20rpo%20codes'


GU4 - 3.08
G80 - gov loc