My 2013 Avalanche has no assist grab bar when entering on drives side. ..I've been holding on and using door arm rest as a grab bar since you can put your hand thru it and as a help to get into truck. The underside and back side of the rest has broken and completely cracked in both spots. I went to a Chevy dealer and they said this is very common and Chevy will not doing anything to help replace it. Have any of you experienced this and did Chevy give you the same answer..Thanks!