Where is the drain plug in rear differential on a 1996 Chevy S-10 Blazer?

The drain plug location on a 1996 Chevy S-10 Blazer rear differential varies slightly depending on the specific axle (8.5-inch or 7.5-inch) and whether it has been modified. There isn't a single universally-applicable answer.

However, it's almost always located on the bottom of the differential housing. To find it, you'll need to:

1. Jack up the rear of the Blazer and securely support it on jack stands. Safety first! Never work under a vehicle supported only by a jack.

2. Locate the rear differential housing. It's the large, cast-iron housing towards the center of the rear axle.

3. Carefully inspect the bottom of the differential housing. The drain plug is usually a square or hex-head bolt. It might be slightly recessed. A shop rag to clean off any accumulated dirt and grime will help you spot it.

4. Check your owner's manual (if available) or a repair manual specific to your 1996 S-10 Blazer. These often have diagrams showing the location. Online resources like Haynes or Chilton manuals may also prove helpful.

Important Note: If you're unsure, it's best to consult a mechanic. Improperly draining the differential can cause damage.