GMC 2001 Envoy - Manual (Page 431)

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USAGE FLUID/LUBRICANT
Manual
Transmission Synchromesh Transmission Fluid
(GM Part No. 12345349
or equivalent).
Automatic
Transmission DEXRON
R
- III Automatic
Transmission Fluid.
Key Lock
Cylinders Multi - Purpose Lubricant,
Superlube
R
(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 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.
Constant
Velocity
Universal Joint Chassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of NLGI # 2, Category LB
or GC
- LB.