Operation CHARM
: Car repair manuals for everyone.
Home
>>
GMC Truck
>>
1989
>>
R 2500 P/U 2WD L6-292 4.8L
>>
Repair and Diagnosis
>>
Maintenance
>>
Fluids
>>
Fluid - Differential
>>
Specifications
>>
Locking Differential (G80)
Locking Differential (G80)
This Article has been updated by TSB # 76-02-02A.
SAE 80W-90 GL5 Gear Lubricant, GM P/N 1052271. Do not use limited slip additive.