If your trying to do this to tow a lighter car, what benefits do you feel you will receive? My GMC ENVOY is 5074 street weight (4 down). My Caddy is 4200 street weight (dolly). I see no difference in handling or fuel mileage when towing either vehicle. When not towing I receive only about 3/10 of a mile improvement in fuel mileage. If you doing this for fuel mileage, consider staying with the Trailblazer.
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
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