* Automatic Transmission: The drain plug is typically located on the bottom of the transmission pan. The transmission pan is a fairly large, rectangular metal part located underneath the transmission itself. The drain plug is usually a smaller bolt on the lower edge of this pan. You'll need to get under the vehicle to locate it.
* Manual Transmission: Manual transmissions on Blazers of this era usually have a drain plug located on the bottom of the transmission case, similar to the automatic but potentially a bit more recessed.
To find it definitively:
1. Consult your owner's manual: This is the best resource, as it will have a diagram showing the location of all fluid drain plugs.
2. Use a repair manual: A Haynes or Chilton repair manual specific to your 1998 Chevy Blazer will show the exact location and provide instructions for draining the transmission fluid. This is a good option if you don't have the owner's manual.
3. Online resources: Search online using "1998 Chevy Blazer transmission drain plug location" along with the specific transmission type (e.g., "4L60E" for a common automatic). Images and videos may be available.
Important Note: Before attempting any work on your transmission, make sure the vehicle is safely supported on jack stands and that the engine is cool. Transmission fluid is hot when the vehicle is running and can cause serious burns.
