I used new utility blades in a handy knife like this from a hardware store...
and sprayed straight ammonia as a lubricant/adhesive remover. I had excellent results. As stated, do not attempt on the rear hatch b/c of the defroster lines running back and forth plus the tint in the rear is legal and helps keep the car cooler in the summer.
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1997 Camaro Z28 - 355 LT1, T56, CC503, LTs, ORY, Bald Eagle-back exhaust, !emissions, Lingenfelter CAI, EWP, !CAGS, BMR LCAs, UMI PHB, Koni Str.t/Koni SA, C5 Z06 front / LS1 F-body rear brake swap, factory hurst with short stick 
2014 2LT Cruze 2.0 Turbo Diesel
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