This is the circuit board on GM wiper motors that commonly has problems on original motors. This board fits many GM trucks and vans. Our list is below:
91-99 Chevy full size C/K trucks
92-99 Blazer, Jimmy, Suburban
94-99 S-10 and Blazer
95-99 S-Series Blazer and Jimmy
94-99 Astro, and GMC Safari Van
90-96 Lumina, APV and Silhouette Van
92/97 Full Size Van
If you are having pulse delay issues on your wiper system, the circuit board is generally the cause. Repair your motor for a fraction of replacing the entire motor with this circuit board.