I feel like such a novice asking this question, but my Chevy literature doesn't contain the codes for 84 interiors and I can't find it anywhere. So what's 22M mean? I'm guessing medium blue. Exterior codes are 22L, 27M and 22U which my Parts and Illustration Catalog says is Light Royal Blue upper and lower, Medium Dark Royal Blue middle (yup it's a Conquista), but it doesn't show 84 interior codes. Thanks.

This picture should answer your question.

http://i468.photobucket.com/albums/rr41/larsonrt/1984ColorCodes.jpg

Yup, Your right 1984 Conquista, Thats what my book shows for a 1984.
L22 = Lower body color, Light Royal blue
M27 = Middle body color, Med, Dark Royal blue
U22 = Upper body color, Light Royal blue

Too bad it's not your transmission code.

ROFL............Manual 5 speed......feel the overdrive love...
Craig

Thanks for the info.