2003 avalanche wipers will not work

SOURCE: chevy cavalier 1997 wiper motor

check first the fuse.
the fuse box might be located just above the left foot pedal under the steering wheel!

SOURCE: Rear Windshield Wiper Problems

Check the wiper motor connection if its touching anything and loose it will automatically ground out and check at connection make sure you put some gel and then snap it in/ Please rate my response thank you very much

SOURCE: replaced wiper motor but still won't work buzzes

can you move the linkage when you pulled the motor?

SOURCE: Rear Wiper does not move

My 2005 Malibu Maxx the motor works but the wiper arm barely moves

SOURCE: 2004 Cavalier Wiper Motor

hi, im not sure if they would have a separate motor each because most vehicles have a linkage bar that connects the two wipers to keep them in time with each other. without the wipers on, try manually rotating the paasenger side wiper (be gentle) if that moves easily and the drivers side does not even flinch, then it could be a broken linkage. hope i helped!