Hose this GT after it's overhauled (6)
I believe the answer is:
tights
'hose' is the definition.
(I know that tights is a type of hose)
'this gt after it's overhauled' is the wordplay.
'after' means one lot of letters go next to another.
'it's overhauled' indicates an anagram.
'this'+'gt'='thisgt'
'thisgt' is an anagram of 'TIGHTS'.
(Other definitions for tights that I've seen before include "elasticated clothing" , "Leg-wear for women" , "Woman's garment" , "Nether garments for women or acrobats (6)" , "Close-fitting female garment" .)