· Premium Member
anyone know what these parts are from?
She's onto a good point - obviously a 42RLE tranny is best left in its stock config. The W5A580 has much more torque capacity and since it bolted right up the the late '09 and up SEs with 3.5s, would be a relatively easy swap (with the appropriate TCM and PCM changes).Feeling sorry for your tranny. Now you should install a NAG1.