Brakes on 1999 chevy

I have a 1999 chevy blazer and 1999 chevy Silverado 1500 pick up truck. There seems to be a problem with the rear brakes on both vehicles not releasing all the way. Is there a problem with this year model vehices that you are aware of, and what is the fix? Thanks

Disc or drum? The rear calipers on my 2000 Blazer froze up after the pads were changed at 80k miles. The fix was to replace the calipers.

Ed B.

Disc, I replaced the calipers on the Blazer, but now the Z-71 has the same problem. I thought it was strange that the rear pads worn so much more than the front pads. Thanks