From what I have heard GM DID pull substantial amount of their holdings out of Isuzu (something like they owned 52%, but sold all but 12% no longer having the majority vote in Isuzu goings on. Good or bad that is yet to be seen, so far their customer relations still suck!). They do still purchase their Diesel engines from Isuzu. The Ascender is a rebadged Envoy, but I am sure Isuzu is paying GM for the production of the vehicle!!! Either that or trade for reduced cost on the Diesel engines. Who really knows what kind of deals they have going up their in Detroit!?!?!;eekr;