What rear diff is in my truck?

[bbck5on37s]

I know its a 10b, but what one?
98 k1500
TIA

 

[longbedder]

Without any more information than you've given, it's impossible to tell.

Check your RPO code list on the glovebox sticker. Look for these codes in the list.

G80 is a Gov-Loc rear.

[SIZE=+1]G44 : AXLE REAR 3.07 RATIO[/SIZE]

[SIZE=+1]G72 : AXLE REAR, 2.14 RATIO[/SIZE]
[SIZE=+1]G75 : AXLE REAR, 3.62 RATIO[/SIZE]
[SIZE=+1]G80 : AXLE POSITRACTION, LIMITED SLIP[/SIZE]
[SIZE=+1]G87 : RING GEAR, 8.50 INCH[/SIZE]
[SIZE=+1]G89 : RING GEAR, 7.50 INCH[/SIZE]
[SIZE=+1]G92 : AXLE REAR RATIO, PERFORMANCE[/SIZE]
[SIZE=+1]G9S : AXLE REAR RATIO, ECONOMY[/SIZE]
[SIZE=+1]GH0 : AXLE REAR, 3.54 RATIO[/SIZE]
[SIZE=+1]GH2 : AXLE REAR, 2.29 RATIO[/SIZE]
[SIZE=+1]GH3 : AXLE REAR, 2.77 RATIO[/SIZE]
[SIZE=+1]GH4 : AXLE REAR, 2.92 RATIO[/SIZE]
[SIZE=+1]GK9 : AXLE REAR, 4.63 RATIO[/SIZE]
[SIZE=+1]GL3 : AXLE REAR, 6.17 RATIO[/SIZE]
[SIZE=+1]GM1 : AXLE REAR, 2.59 RATIO[/SIZE]
[SIZE=+1]GM3 : AXLE REAR, 3.45 RATIO[/SIZE]
[SIZE=+1]GM8 : AXLE REAR, 2.56 RATIO[/SIZE]
[SIZE=+1]GQ1 : AXLE, STD RATIO[/SIZE]
[SIZE=+1]GS4 : AXLE REAR, 3.70 RATIO[/SIZE]
[SIZE=+1]GT4 : AXLE REAR, 3.73 RATIO[/SIZE]
[SIZE=+1]GT5 : AXLE REAR, 4.10 RATIO[/SIZE]
[SIZE=+1]GT7 : AXLE REAR, 3.33 RATIO[/SIZE]
[SIZE=+1]GT8 : AXLE REAR, 4.10 RATIO[/SIZE]
[SIZE=+1]GTY : AXLE, WIDE TRACK[/SIZE]
[SIZE=+1]GU1 : AXLE REAR, 2.41 RATIO[/SIZE]
[SIZE=+1]GU2 : AXLE REAR, 2.73 RATIO[/SIZE]
[SIZE=+1]GU4 : AXLE REAR, 3.08 RATIO[/SIZE]
[SIZE=+1]GU5 : AXLE REAR, 3.23 RATIO[/SIZE]
[SIZE=+1]GU6 : AXLE REAR, 3.42 RATIO[/SIZE]
[SIZE=+1]GV2 : AXLE REAR, 5.83 RATIO[/SIZE]
[SIZE=+1]GV4 : AXLE REAR, 3.36 RATIO[/SIZE]
[SIZE=+1]GV8 : AXLE REAR, 2.72 RATIO[/SIZE]
[SIZE=+1]GW4 : AXLE REAR, 3.31 RATIO[/SIZE]
[SIZE=+1]GW6 : AXLE REAR, 3.27 RATIO[/SIZE] [SIZE=+1]GW9 : AXLE REAR, 2.93 RATIO[/SIZE]
[SIZE=+1]HC4 : AXLE REAR, 4.56 RATIO[/SIZE]