Which specification does Automatic transmission fluid (ATF) need for the Chevrolet C 3500 HD (4x2) (1997–2000)?

Automatic transmission fluid (ATF) for the Chevrolet C 3500 HD (4x2) (1997–2000): Allison TES 389, Caterpillar TO-2.

Which specification does Axle & differential oil need for the Chevrolet C 3500 HD (4x2) (1997–2000)?

Axle & differential oil for the Chevrolet C 3500 HD (4x2) (1997–2000): 75W-140, 80W-90, API GL4, API GL5.

Brake fluid for the Chevrolet C 3500 HD (4x2) (1997–2000): GM Europe GMW 3356, DOT 3.

Coolant & antifreeze for the Chevrolet C 3500 HD (4x2) (1997–2000): G11, G12.

Power steering fluid for the Chevrolet C 3500 HD (4x2) (1997–2000): Dexron III, ZF TE-ML 02F.

For the Chevrolet C 3500 HD (4x2) (1997–2000), the manufacturer specifies motor oil 15W-40 (ACEA A3/B4, ACEA E2, API SL) or 5W-30 (API SN).

Fluid	Requirement
Motor oil	15W-40: ACEA A3/B4, ACEA E2, API SL5W-30: API SN
Automatic transmission fluid (ATF)	Allison TES 389, Caterpillar TO-2
Axle & differential oil	75W-140, 80W-90, API GL4, API GL5
Brake fluid	GM Europe GMW 3356, DOT 3
Coolant & antifreeze	G11, G12
Power steering fluid	Dexron III, ZF TE-ML 02F