2000 Lesabre wiper motor/relay issue

[RB98SS]

My LeSabre's wipers recently started wiping in a very jerky/shuddering way recently. It's not the blades as it's too drastic and only happens under two conditions. The first is when they are set to "intermittent", the second when they are turned off and going to the "park" position. I've read a couple threads regarding this issue and it appears that the problem could be my wiper relay. Is the wiper relay in the fuse box or somewhere else? Am I barking up the right tree?

Thanks, Gary

[jdl]

There is no wiper relay. Maybe the switch or motor?

[HotZ28]

The windshield wiper motor is protected by a circuit breaker and a fuse. If the motor overheats due to heavy snow, etc., the wiper will stop until the motor cools.