Rear Window Wiper/Washer
For vehicles with a rear window wiper/washer, the controls are on the end of the windshield wiper lever.

Press the upper or lower portion of the button to control the rear wiper and rear wiper delay.
The system turns off when the button is returned to the middle position.
(Rear Wiper Delay Short):
Sets a five–second delay between wipes.
(Rear Wiper Delay Long): Sets a 10–second delay between wipes.
(Rear Washer): Push the windshield wiper lever forward to spray washer fluid on the rear window. The lever returns to its starting position when released.
The windshield washer reservoir is used for the windshield and the rear window. Check the fluid level in the reservoir if either washer is not working. See Washer Fluid.
Test yourself
A quick Cadillac CTS quiz: every answer comes with an explanation and a link to the manual page.