Owner's Manual
Page 409
... Chassis Lubricant (GM Part No. 12377985 or equivalent) or lubricant meeting requirements of NLGI ## 2, Category LB or GC-LB. USAGE Front Axle Propshaft Spline and Universal Joints One-Piece Propshaft Spline (With Two-Wheel Drive) FLUIDLUBRICANT Chassis Lubricant (GM Part No. 12377985 or equivalent) or lubricant meeting requirements of GM 998530. Spline...
... Chassis Lubricant (GM Part No. 12377985 or equivalent) or lubricant meeting requirements of NLGI ## 2, Category LB or GC-LB. USAGE Front Axle Propshaft Spline and Universal Joints One-Piece Propshaft Spline (With Two-Wheel Drive) FLUIDLUBRICANT Chassis Lubricant (GM Part No. 12377985 or equivalent) or lubricant meeting requirements of GM 998530. Spline...