Does a 1996Chevy blazer transmission interchange with 2001 Chevy transmission?

No, a 1996 Chevy Blazer transmission will almost certainly not interchange with a 2001 Chevy Blazer transmission. While both are Chevy Blazers, there were significant changes in transmissions and drivetrains over those five years. The bolt patterns, bellhousing, input shafts, and even the overall transmission design likely differ. Trying to force a mismatch could cause serious damage to your vehicle.

To find a compatible transmission, you need to know the exact transmission model number from both the 1996 and 2001 Blazers. This information is usually found on a tag on the transmission itself. Then, you can compare those numbers to see if they are interchangeable. Even with the same model number, there can be subtle differences that might cause compatibility issues. A parts store or a transmission specialist will be your best resource for determining compatibility.