C5 DS headlight won't open or close

I've read many threads for a solution but tried almost all myself:

-pulled and replaced #6 minifuse
-refaced left ground between DS headlamp and generator
-pulled and cleaned contacts in left side (1)and right side(2)wiring harnesses
-cycled hazard lights 3-4 times
-manually raised and lowered DS headlamp successfully

I have noticed no sound or spinning movement in DS gear wheel assembly or manual turn knob under rubber sleeve while feeling and seeing PS assembly gear wheel and manual knob spin properly to raise and lower that headlamp

Given this failure to spin in the DS assembly; I don't think its problem is a broken nylon gear.

What do you think should be my next move?

Chris Trautman @ Corvette Assembly Plant 2019

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