I believe I've got a factory trans cooler on my truck ( looking straight into the grille it sits right infront of the radiator) and from what I'm told its a crappy one. I'm going to get a B&M supercooler trans cooler (24000 GVW). Can I run two trans coolers (the stock one and the B&M together)? Will it help the trans a whole lot?

 

Any time you can get more surface area for a cooler its good! I run the supercooler on mine, and I see about 40* less in temps over the stock cooler.

 

If I were you, I'd just swap the stocker out for the 24000. It'll be alot easier to mount just 1 cooler. Or go to the 28000.

 

I run two coolers for my transmission with no problem. The B&M cooler keeps the tranny cooler than factory one alone did.