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USAGE FLUID/LUBRICANT
Manual
Transmission
Synchromesh Transmission Fluid
(GM Part No. 12345349 or
equivalent).
Automatic
Transmission
DEXRON -III Automatic
Transmission Fluid.
Key Lock
Cylinders
Multi-Purpose Lubricant,
Superlube
(GM Part
No. 12346241 or equivalent).
Chassis
Lubrication
Chassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of NLGI # 2, Category LB
or GC
-LB.
Front and Rear
Axle (Standard
Differential)
SAE 80W-90 Axle Lubricant (GM
Part No. 1052271 or equivalent).
USAGE FLUID/LUBRICANT
Rear Axle
(Locking
Differential)
Axle Lubricant; use only GM Part
No. 1052271. Do not add friction
modifier.
Transfer Case AUTO-TRAK II Fluid
(GM Part No. 12378508).
Electronic
Transfer Case
DEXRON -III Automatic
Transmission Fluid.
Automatic
Transfer Case
AUTO-TRAK II Fluid
(GM Part No. 12378508).
Rear Driveline
Center Spline
and Universal
Joints
Chassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of NLGI # 2, Category LB
or GC
-LB.