Dodge truck wiper problems

The dealers want $400 + to repair the malfunctioning windshield wipers on my 2006 Dodge 1500 SLT truck. It could be more if it involves the main module!
The wipers sometimes do not start and sometimes, they work for a while, go fast and then slow and often stop and won’t restart. Darn near got killed in traffic at night in the rain. I pushed the “wash” feature and got to see enough to get off the road…Help!

I recently noticed the same thing happening to me on my '06 Ram. I had the wipers up fast, they’d slow down, then go back to normal. I hope I don’t have to get the same repair