Engine/Transmission (1994 - 1998) exhaust brake on auto truck

[JFaughn]

I am thought I read something awhile back about putting a exhaust brake on an truck with an auto trans , what will I need to do to trans and truck to make it work ?

 

[Joe G.]

There is a ton of stuff about this on this forum. Search for mystery switch. The short answer is that you have to have a way to make the torque convertor clutch stay locked at idle throttle. Since you have a '94 with a 47RH transmission the electronic controllers for a 47RE used in '96 and later trucks will not work.