Does a 1998 Chevy pickup 4l60e transmission match 1999 astro van?

No, a 1998 Chevy pickup 4L60E transmission is not a guaranteed match for a 1999 Astro van. While both vehicles might use the 4L60E transmission, there can be subtle differences in the bellhousing, output shaft length, and even internal components depending on the engine and options of the specific trucks and vans.

Simply put, it's highly unlikely to be a direct bolt-in swap without potential issues. You need to verify the compatibility of the specific transmission from the pickup and the specific transmission needs of the Astro van. This often requires checking part numbers. A professional transmission shop can help determine compatibility.