Engine oil
6.0 US qt (5.7 L) with filter (GM TechLink MY2025 chart)
Notes
Express 2500 Passenger LT CG23406 LV1 MY2025 US only. US MY2025 Express LT equipment group 1LT, model CG23406 (2500 Passenger Van Regular Wheelbase); standard LV1/MTH verified in own-model order-guide Mechanical column G and MY2025 VIN p.29 series GF. Excludes optional L8T, N8X. No sibling trim, other configuration, optional-engine, body, drive, year or market inference.
Coolant
12.4 L (13.1 US qt), approximately, for the entire engine cooling system (4.3L V6 with rear heat)
Notes
Express 2500 Passenger LT CG23406 LV1 MY2025 US only. US MY2025 Express LT equipment group 1LT, model CG23406 (2500 Passenger Van Regular Wheelbase); standard LV1/MTH verified in own-model order-guide Mechanical column G and MY2025 VIN p.29 series GF. Excludes optional L8T, N8X. No sibling trim, other configuration, optional-engine, body, drive, year or market inference.
Transmission fluid
DEXRON-HP automatic transmission fluid
Notes
Express 2500 Passenger LT CG23406 LV1 MY2025 US only. US MY2025 Express LT equipment group 1LT, model CG23406 (2500 Passenger Van Regular Wheelbase); standard LV1/MTH verified in own-model order-guide Mechanical column G and MY2025 VIN p.29 series GF. Excludes optional L8T, N8X. No sibling trim, other configuration, optional-engine, body, drive, year or market inference.
Fuel tank
117.3 L (31.0 US gal), approximately
Notes
Express 2500 Passenger LT CG23406 LV1 MY2025 US only. US MY2025 Express LT equipment group 1LT, model CG23406 (2500 Passenger Van Regular Wheelbase); standard LV1/MTH verified in own-model order-guide Mechanical column G and MY2025 VIN p.29 series GF. Excludes optional L8T, N8X. No sibling trim, other configuration, optional-engine, body, drive, year or market inference.