342 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Usage Fluid/Lubricant
Engine Oil Engine oil meeting the dexos1™ specification of the proper SAE viscosity
grade. ACDelco dexos1 Synthetic Blend is recommended. See Engine
Oil 0 258.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL
®
Coolant.
See Engine Coolant 0 263.
Fuel Additive Fuel System Treatment PLUS (Part No. 88861013).
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 19299818, in
Canada 19299819).
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection
requirements.
Automatic Transmission ATF-WS Automatic Transmission Fluid (GM Part No. 88863400, in
Canada 88863401).
Transfer Case (All-Wheel Drive) Transfer Case Fluid (GM Part No. 88863089, in Canada 88863090).
Rear Differential Clutch Fluid
(If equipped)
Rear Axle Hydraulic Fluid (GM Part No. 88901975, in Canada 88901976).
Rear Axle Gear Fluid Dexron LS Axle Lubricant (GM Part No. 88862624, in Canada 88862625).
Chassis Lubrication Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or
lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
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