Things You'll Need
Instructions
Park the Trail Blazer on a flat surface and make sure the brake is in place.
Locate the gearbox at the rear center of the ATV. The drain plug will be at the bottom. Remove the plug with a wrench and let it drain into the drain pan.
Replace the drain plug with the wrench and slide the drain pan out.
Remove the gearbox dipstick and add gear oil until the fluid level falls between the acceptable levels on the dipstick.