How much rear differential fluid does a 2014 Chevy Express hold?
The rear differential on a 2014 Chevy Express does not have a single fixed capacity; it depends on the axle installed in the van.
In general, the lighter 8.6-inch axle used on the 1500 models takes about 2.0–2.5 quarts for a drain-and-fill, while the heavier 10.5-inch axle found on the 2500/3500 models requires roughly 3.0–3.5 quarts. To confirm the exact amount for your specific van, check the axle code tag under the hood or refer to the owner's manual or service manual.
Capacity by Axle Type
The figures below assume a complete drain and refill with standard gear oil and are intended as a guideline. Actual amounts can vary slightly based on factory options (such as a limited-slip differential) and service conditions.
- 8.6-inch rear axle (common on 1500 variants): approximately 2.0–2.5 quarts (about 1.9–2.4 L).
- 10.5-inch rear axle (common on 2500/3500 variants): approximately 3.0–3.5 quarts (about 2.8–3.3 L).
When performing a drain and refill, use the recommended gear oil viscosity for GM differentials (often 75W-90 GL-5) and fill until the oil reaches the proper level as specified by the service manual or by the fill plug. If in doubt, consult a mechanic or the dealer for your exact axle configuration.
Summary
For the 2014 Chevy Express, rear-differential capacity varies by axle: about 2.0–2.5 quarts for the 8.6-inch axle and about 3.0–3.5 quarts for the 10.5-inch axle. Verify the exact figure by checking the axle code tag or the vehicle’s manuals, and perform fills accordingly.
