For anyone on the fence about the Dorman trans pan, I installed on one my 4r75e (same pan as your 4r70). It is nearly identical in every way compared to the original. Same shape, thickness, provision for the magnet, same gasket flange. A perfect fit. No leaks reusing the factory gasket.
As a skeptic of most Dorman products (I've gotten some Dorman junk in the past), this trans pan was a pleasant surprise. For anyone hemming and hawing due to the Dorman label, don't worry in this case. It's a fine replacement.
As a skeptic of most Dorman products (I've gotten some Dorman junk in the past), this trans pan was a pleasant surprise. For anyone hemming and hawing due to the Dorman label, don't worry in this case. It's a fine replacement.