If the motor runs but doesn't move the glass (w/o defrost E0TZ9842006B, w/defrost F2TZ9842006A), push the glass up for access. The glass is strong enough to support its own weight fully extended, but not much extra weight.
If the motor doesn't run, remove the 4 nuts (2 on each side - see below) that hold the regulator tracks to the glass brackets. Bend the regulator arms down slightly to pull the studs out of the brackets, and then push the glass up or down as needed. Remember to FULLY lower or remove the glass before lifting or closing the t/g.
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