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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.
Automatic
Transfer Case
Automatic Transfer Case Fluid
(GM Part No. 12378396).
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.
Constant
Velocity
Universal Joint
Chassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements of
NLGI # 2, Category LB
or GC
-LB.