well thats news to me.....anyway, those mirrors I listed are the sum total of those in the parts manual, so you'll have to scratch your head a while longer maybe, though the GU4 doesnt actually seem to have a part number, and a GUU appears instead.....heres the list, but I may have a parts manual that isnt worldwide which would explain not finding a dimming one
[GT5]= Power Heated, Fold Away
[GT8]= Power Mirrors
[GTB]= Power Heated Mirrors
[GTF]= Power Mirrors
[GTR]= Power Heated
[GTS]= Power Heated, Fold Away
[GU4]= Power Multi-Function, Fold Away
[GU5]= Power Heated, Fold Away
[GYE]= Pow
1 MIRROR, Outside Rearview
04806160AF 1 C, F, Z 48, 49 With Sales Code [GUL], Right
04806161AF 1 C, F, Z 48, 49 With Sales Code [GUL], Left
04806431AC 1 C, F, Z 48, 49 With Sales Code [GUQ], Left
1DQ261BLAC 1 C, Z 48 [BL], With Sales Code [GTD],
Right
1 C, F, Z 49 [BL], With Sales Code [GTD],
Right
1DQ261BMAC 1 C, Z 48 [BM], With Sales Code [GTD],
Right
1 C, F, Z 49 [BM], With Sales Code [GTD],
Right
1DQ261S2AC 1 C, Z 48 [S2], With Sales Code [GTD],
Right
1 C, F, Z 49 [S2], With Sales Code [GTD],
Right
1DQ261XRAC 1 C, Z 48 [XR], With Sales Code [GTD],
Right
04806432AC 1 C, F, Z 48, 49 With Sales Code [GUQ], Right
1DQ271BMAC 1 C, F, Z 49 [BM], With Sales Code [GTD],
Left
1DQ271S2AC 1 C, Z 48 [S2], With Sales Code [GTD],
Left
1 C, F, Z 49 [S2], With Sales Code [GTD],
Left
1DQ271XRAC 1 C, Z 48 [XR], With Sales Code [GTD],
Left
1 C, F, Z 49 [XR], With Sales Code [GTD],
Left
1 C, F, Z 49 [XR], With Sales Code [GTD],
Right
1DQ271BLAC 1 C, Z 48 [BL], With Sales Code [GTD],
Left
1 C, F, Z 49 [BL], With Sales Code [GTD],
Left
1 C, Z 48 [BM], With Sales Code [GTD],
Left
2 GLASS, Mirror Replacement
05179780AA 1 C, Z 48 With Sales Code [GUL] or [GUQ]
or [GTD], Right
1 C, F, Z 49 With Sales Code [GUL] or [GUQ]
or [GTD], Right
05179781AA 1 C, Z 48 With Sales Code [GUL] or [GUQ]
or [GTD], Left
1 C, F, Z 49 With Sales Code [GUL] or [GUQ]
or [GTD], Left
3 MIRROR, Outside, Rearview,
Electric, Heated
04805978AK 1 C, Z 48 With Sales Code [GUU], Right
1 C, F, Z 49 With Sales Code [GUU], Right
04805979AK 1 C, Z 48 With Sales Code [GUU], Left
1 C, F, Z 49 With Sales Code [GUU], Left
1CG381BLAC 1 C, F, Z 49 [BL], With Sales Code [GU5],
Right
1CG381BMAC 1 C, Z 48 [BM], With Sales Code [GU5],
Right
1 C, F, Z 49 [BM], With Sales Code [GU5],
Right
1CG381S2AC 1 C, Z 48 [S2], With Sales Code [GU5],
Right
1 C, F, Z 49 [S2], With Sales Code [GU5],
Right
1CG381XRAC 1 C, Z 48 [XR], With Sales Code [GU5],
Right
1 C, F, Z 49 [XR], With Sales Code [GU5],
Right
04806198AH 1 C, Z 48 With Sales Code [GUD], Right
1 C, F, Z 49 With Sales Code [GUD], Right
04806199AH 1 C, Z 48 With Sales Code [GUD], Left
1 C, F, Z 49 With Sales Code [GUD], Left
1 C, Z 48 [BL], With Sales Code [GU5],
Right
1CG391BLAC 1 C, Z 48 [BL], With Sales Code [GU5],
Left
1 C, F, Z 49 [BL], With Sales Code [GU5],
Left
1CG391BMAC 1 C, Z 48 [BM], With Sales Code [GU5],
Left
1 C, F, Z 49 [BM], With Sales Code [GU5],
Left
1CG391S2AC 1 C, Z 48 [S2], With Sales Code [GU5],
Left
1 C, F, Z 49 [S2], With Sales Code [GU5],
Left
1CG391XRAC 1 C, Z 48 [XR], With Sales Code [GU5],
Left
1 C, F, Z 49 [XR], With Sales Code [GU5],
Left
4 GLASS, Mirror Replacement
05139200AA 1 C, Z 48 With Sales Code [GUU] or
[GUD], Right
1 C, F, Z 49 With Sales Code [GUU] or
[GUD], Right
05139201AA 1 C, F, Z 49 With Sales Code [GUU] or
[GUD], Left
1 C, Z 48 With Sales Code [GUU] or
[GUD], Left
5 NUT AND WASHER, Hex, M5x.80
06101443 2 C, Z 48
2 C, F, Z 49