* 4L60E: This 4-speed automatic was very common.
* 700R4: A 3-speed automatic, less common than the 4L60E but still possible.
* NV3500: A 5-speed manual transmission.
To know for certain which transmission is in *your* specific 1995 GMC Sierra 1500, you'll need to check:
* The vehicle's identification number (VIN): A VIN decoder (many are available online) can tell you the transmission type.
* The build sheet (if available): This will list the transmission.
* The transmission itself: Look for markings on the transmission case. This is the most reliable method but requires some mechanical knowledge to safely access the transmission.
Checking the VIN is the easiest and safest method.
