Chevrolet Suburban, T1XX (USA / CAN)

Additional Notes

• The Chevrolet Suburban T1XX transfer case holds 1.5 liters of fluid across all listed AWD configurations, covering the 3.0 Diesel, 5.3 V8, and 6.2 V8 engine variants.
• A 1.5-liter transfer case fill is a relatively modest capacity, consistent with the compact internal volume of an electronically controlled transfer case unit rather than a larger, gear-reduction-heavy unit.
• Under normal use conditions, the transfer case fluid change interval is set at 97,500 miles for all three engine configurations listed.
• Under severe use conditions, the change interval drops to 45,000 miles across all listed AWD configurations, representing a reduction of more than half compared to the normal use interval.
• The 3.0 Diesel AWD configuration carries the same 1.5-liter capacity and identical normal and severe service intervals as both V8 AWD variants, indicating no capacity or scheduling difference tied to engine type.
• The 5.3 V8 AWD appears under two separate specification entries: one covering 2020-2022 and another starting from 2022, both sharing the same 1.5-liter capacity and the same 97,500-mile normal and 45,000-mile severe intervals.
• The 6.2 V8 AWD follows the same dual-entry pattern as the 5.3 V8, with a 2020-2022 entry and a separate 2022 starting entry, both specifying identical capacity and interval values.