I've been looking at some Avalance 2500s, my question is, will a big utility atv, like a Grizzly700 fit in the back, with tailgate down, and using an LA guard dog? I don't want to resort to folding down the midgate and rear seat.

It should handle it OK. Avalanche bed is 63" long and 50" wide. Add another 18" to 20" for the tailgate and you have more than enough for a full size utility.

Besides, the Avalanche has those cute ATV tracks molded right into the bed liner.

Jaybee

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'07 Outlander 800 XT Camo
'02 Eiger 5-sp
'02 Ozark
'96 TRX90

Old rides: '89 Warrior, '93 KQ 300, '97 Warrior, '84 LT50, '98 LT80

'07 GMC Sierra 2500HD DMax
25' six-place flatbed trailer

Thanks, I wasn't sure.......hope I can make the LA Guard Dog work out.