To figure out what you currently have, you'll need to:
* Check your vehicle's identification number (VIN): This is the most accurate method. A VIN decoder (many free options online) can reveal the original transmission.
* Look under the vehicle: You can identify the transmission by its physical characteristics (case shape, markings). However, this requires some familiarity with different transmission types. Photos can be helpful for comparison online.
* Check your owner's manual: If you have it, the manual will specify the transmission type.
Once you know the original transmission type (e.g., 700R4, 4L60E), you can search for a replacement of the same type. While some other transmissions *might* be adaptable with significant modification (requiring custom parts and potentially a skilled mechanic), using the same type is strongly recommended for a straightforward replacement. Trying to fit an incompatible transmission will be incredibly difficult and possibly impossible.
Common transmissions in a 1994 full-size Chevy Blazer 4WD include the 700R4 (a three-speed automatic) and the 4L60E (a four-speed automatic). But again, check your specific vehicle to be sure.
