I Have A SSL DD888 i want to put in my 2001 blazer but its taller than the stock hole from the original stereo what do i need to do to make it fit

 

A hacksaw and the guts to cut up your dash.



Did something like that few years ago:
click here to see my handywork at showyoursound.nl

 

Later Blazers have a double DIN facia for the dash. Grind not cut the frame of the dash with a dremel or die grinder as it only takes a little. There might be clearance issues to the rear at a heater duct. That can be remedied with a heat gun and a gentle push. Again only a little as there are other heat sensitive parts around. Remove air bag fuse and disconnect battery first. The adapter jack rattles around so rap it with a little foam. Good luck, now get after it!

 

I used the dash from a 2001 Bravada for my double din install. Everything matches up the same, just has a bigger opening for the stereo. No cutting or trimming was needed.