GMC Savana 2020 Owner's Manual page 316

Usage
Key Lock Cylinders, Hood Hinges
Power Steering System
Rear Axle (Dual Rear Wheels)
Rear Axle (Single Rear Wheels)
Weatherstrip Conditioning
Weatherstrip Squeaks
Windshield Washer
Maintenance Replacement Parts
If the vehicle has the Duramax diesel engine, see the Duramax diesel supplement.
Replacement parts identified below by name, part number, or specification can be obtained from your dealer.
Engine Air Cleaner/Filter
Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
GM Power Steering Fluid (GM Part No. 19329450, in Canada 19329451).
SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 88900401, in
Canada 89021678).
SAE 75W-85 Synthetic Axle Lubricant (GM Part No. 19300457, in
Canada 19300458).
Weatherstrip lubricant (GM Part No. 3634770, in Canada 10953518) or
equivalent.
Synthetic Grease with Teflon, Superlube (GM Part No. 12371287, in
Canada 10953437).
Automotive windshield washer fluid that meets regional freeze protection
requirements.
Part
Service and Maintenance
Fluid/Lubricant
GM Part Number ACDelco Part Number
315