The linkage bushings are worn/missing/broken or the wiper arms are not timed properly to the wiper transmissions.
Replace the paulse board that's attached to the wiper motor.
its broken......
wiper motor or the bolts holding it tight.
check wiper fuse first, then check wiper switch then check wiper motor
Check your fuses.
Broken or disconnected wiper transmission (linkage)?
The RPM is not working on 2002 chevy impala LS. transmission and engine sounds good- no problem. what's wrong
my o6 chevy impala is lighting up on the dash that the engine is hot but the gauge is saying its cold what is wrong and how can i fix it?
Either the fuse is blown or the wiper motor is bad.
I'm having the same trouble with the 2004 Impala.
try replacing the windshield wiper moter, and check for damaged wireing that could be causeing a short and blowing fuses.
I have a 2003 astro with the same problem, it was the blower motor