August 09, 2022 1 min read

What HEST camping mattress fits inside my GMC SIERRA TRUCK bed?

Consider making your own GMC Sierra into a simple camper with a HEST Dually Long camping mattress. Here is how our HEST Dually Long camping mattress fits inside the bed of a first generation GMC Sierra truck bed.

First generation GMC Sierra truck beds (1999 to 2006) are 79.2" in. long by 71.4" in. wide. With a GMC Sierra 1st Generation our Dually Long mattress will fit between the wheel wells with the tailgate closed. 

GMC Sierra Pickup Truck Bed Dimensions First Generation (1999-2006)

  • 79.2" inches long by 71.4" inches wide