• If you currently own, previously owned or want to own an Avalanche, we welcome you to become a member today. Membership is FREE, register now!

Don't Forget To Clean Midgate Threshhold!


Charter Member
SM 2008
SM 2007
SM 2006
SM 2005
SM 2004
SM 2003
Full Member
Mar 10, 2002
Vancouver, WA
I call it the "midgate threshhold". It's the spring-loaded two-part assembly that is screwed to the front of the bed with 6 torx screws whose springed part covers the crevice between bed and midgate as the midgate folds down and rotates away from the bed.

got_change provided a good reminder several months ago to Clean the midgate-to-bed drain cover--the little slotted plastic screen that covers a gutter and drain hole in the front of the bed. But the metal/plastic threshhold assembly that is screwed to the bed under the plastic screen is also a source of dirt and grime.

Following my recent bout with sand I still have sand in the bed. After removing the mat, the plastic screen that got_change talks of, there was still sand wedged in between the bed, midgate seals, and this spring-loaded threshhold piece. So I took it off and lo' and behold; check this out:


Guess this is another thing that needs removing and cleaning periodically.



  • midgate_threshold_removed.jpg
    51.7 KB · Views: 47
Good recommendation. I had to do that after hauling a bunch of concrete. I had some water back up into my cab and once I cleaned that I didn't have any water back up again.