What kind of rear differential fluid does a 2007 Tahoe take?
The rear differential in a 2007 Chevrolet Tahoe generally uses GL-5 gear oil in either 75W-90 or 80W-90 viscosity. The exact specification depends on the rear axle type and whether the axle is a limited-slip unit. Verify the exact requirement for your vehicle by checking the axle tag or the owner's manual.
Fluid specification by axle type and condition
The Tahoe could be equipped with slightly different rear axles, and the presence of a limited-slip differential can change the recommended additive approach. The following options cover the common scenarios.
- 75W-90 GL-5 gear oil — standard recommendation for most 8.6-inch and 9.5-inch rear axles on the 2007 Tahoe, suitable for both conventional and synthetic variants.
- 80W-90 GL-5 gear oil — acceptable alternative, sometimes preferred in hotter climates or for certain axle configurations.
- Friction modifier for limited-slip (LSD) axles — if your Tahoe has a G80 or other LSD, you’ll typically need to add a friction modifier to the GL-5 gear oil unless the bottle already includes it.
Using the correct oil and, if necessary, the friction modifier helps maintain proper differential operation and reduces wear. When in doubt, follow the axle-specific guidance in your owner’s manual or consult a dealer/mechanic.
How to confirm your axle configuration
Identifying the exact axle setup on a 2007 Tahoe ensures you choose the right fluid and any needed additives. Use these steps to verify what your vehicle requires.
- Check the axle code on the vehicle’s data plate or axle tag to identify the rear axle model (for example, 8.6" vs 9.5").
- Look for the G80 badge/option code or check the glovebox tag for RPO codes indicating a limited-slip differential.
- Consult the owner's manual or GM service documents for the recommended lubricant and whether a friction modifier is required for your axle.
- If uncertain, contact a Chevrolet dealer or qualified mechanic with your VIN to confirm the exact specification for your truck.
Knowing your axle type helps you select the precise oil and any necessary additives, avoiding common mistakes that can affect differential performance.
Bottom line
For most 2007 Tahoe models, use 75W-90 GL-5 gear oil as the default rear-differential lubricant. If your axle is identified as 80W-90 GL-5 or is in a hot or heavy-use environment, 80W-90 is a viable alternative. If you have a limited-slip differential, plan to add a friction modifier per the oil’s instructions. Always confirm the exact specification for your axle by checking the RPO tag, owner’s manual, or with a dealership.
Summary
In practice, your 2007 Tahoe’s rear differential typically calls for GL-5 gear oil in 75W-90, with 80W-90 as an acceptable alternative in some instances. The presence of a limited-slip differential requires attention to a friction modifier additive. The safest course is to verify the axle type and follow the owner’s manual or dealer guidance to ensure the correct lubricant and additives are used.
What kind of oil does a Tahoe differential take?
For the 2015 Chevrolet Tahoe LT, use SAE 75W-90 synthetic gear oil in both front and rear differentials. Check the owner's manual for exact specifications. Symptoms of low or wrong fluid include whining noises and poor handling.
How much fluid does a 2007 GMC Yukon rear differential hold?
If your vehicle has a 6-lug wheel, then it features an 8-inch rear axle with a capacity of 2.1 quarts.
What kind of rear differential fluid does a 2005 Chevy Suburban take?
Mobil 1 – 75W-90 Full Synthetic Gear Lubricant, Extends Gear Life, 1 Quart (Part No. 26101)
What kind of gear Oil does a 2007 Tahoe take?
3 Qt. Penzoil 80W90 conventional gear Oil.
