Yep 4x4 is only Colorado towable 4 down without modifications. I read that the new Colorado you have to disconnect the battery to tow 4 down? Does anybody know if that's true. On our 2008 Colorado we don't have to disconnect the battery.
Lonny & Diane
2004 Country Coach Allure 33' "Big Blue"
Towing 2008 Chev Colorado 4x4
Semper Fi