MAP/BARO Switch

I've got a 96 GXE. I'm getting a 1302 code from the ECU, which is
MAP/BARO SW Solenoid valve. I've figured out what it looks like (just
like the EGRC solenoid which I just replaced), but there are two
identical solenoids sitting next to each other, mounted to the same
plate. (This is in addition to the EGRC solenoid.) The dealer's parts
guy says they have different numbers. I can't tell from the manual
which is which. Does anyone know?