Timborow, your washer according to the serial # CJ49 was produced the 49th week of 1999. "J" was the designation for 1999, K was 2000 & so on.
Spinout, Whirlpool factories in the U.S and their serial # prefix I.D. are:
C=Clyde Ohio, all top load washers
M=Marion Ohio, all clothes dryers & thin-twins
F=Findlay Ohio, all dishwashers, except drawer models
W=Greenville Ohio, KitchenAid countertop appliances
E=Evansville Indiana, top mount refrigerators & ice machines
Q=Lavergne Tennessee, Built-in refrig, A/C's, dehums & HEPA air filters
S=Ft. Smith Arkansas, Side by side refrig, icemakers & compactors
X=Oxford Mississippi, Wall ovens, cooktops & KitchenAid ranges
R=Tulsa Oklahoma, Freestanding gas & electric ranges