1998 GMC Sonoma Owner's Manual - Page 371

USAGE Automatic Transmission Key Lock Cylinders Chassis Lubrication FLUIDLUBRICANT DEXRON@-I11 Automatic Transmission Fluid. Multi-PuoseLubricant, % Superlube (GM Part No. 12346241 or equivalent). Chassis Lubricant(GM Part No. 12377985 or equivalent) or lubricant meeting requirements of NLGI ## 2, Category LB or GC-LB. Wheel Bearing Lubricant meeting requirements of NLGI # 2, Category GC or GC-LB(GM Part No. 105 1344 equivalent). or Axle Lubricant(GM Part No. 1052271) orSAE 8OW-90 GL-5 Gear Lubricant. USAGE Transfer Case Windshield Washer Solvent Transfer Case Shift Lever FLUIDLUBRICANT DEXRON@-111Automatic Transmission Fluid. GM Optikleen@Washer Solvent (GMPart No. 105 15 15) or equivalent. Chassis Lubricant (GM Part No. 12377985 or equivalent) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB. Chassis Lubricant (GM Part No. 12377985 or equivalent) or lubricant meeting requirements of NLGI ## 2, Category LB or GC-LB. ~~ Front Wheel Bearings Rear Driveline Center Spline and Universal Joints Differential, Front and Rear Axle 7-49