Just bought a 2001 Blazer about 3 weeks ago. Truck looks great but 2 weeks ago the manifold gasket went. Replaced it everything was fine for a week. Then tranny started slipping. Replaced filter and fluid. Now it seems to be locked and the slip is worse. OBD II says solenoid B electrical twice and CP sensor. Do I need to find a transmission or is this one worth fixing? Any help would be greatly appreciated.

Also, when the tranny started slipping, the service engine soon light came on. and the only code it showed was the cps.

When I dropped the pan, one of the sensors was off so I snapped it back in. Now I have the solenoid code.