TRICO and other aftermarket [used/NOS] would be your only source, not GM, or you could adapt an electric pump from a late model

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics