Because you need a 3/4 ton frame and body lift to fit the engine/transmission. Hopefully in the next couple of years they will be putting a smaller diesel in there. There may not be as great of a demand for them either. I think GM has their hands full trying to produce enough duramax's for the trucks. I wish they would put a duramax in a tahoe or yukon too though.
See we went to a Jeep dealer just due to the curiosity of the Liberty having a 3.5 banger in it...it was very impresive...would be like putting one in a TrailBlazer.
It seems like ford, gm and dodge are catching on to the SUV diesel thing....or at least "lighter" diesels for trucks like the f150, durango or something...
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