Okay so if you go to this page on Autozone, you'll see that a code 37 on a 1988+ auto transmission has to do with the Transmission Control Solenoid circuit.
Scroll down to : Fig. Fig. 4: Diagnostic trouble codes-1988-95 2.2L and 2.5L Chrysler EFI engines (continued)
http://www.autozone.com/autozone/repair ... 5280251923
This is a Transmission Control Solenoid on Autozone but you can find them way cheaper on RockAuto.com I personally was able to find an OEM Dodge original part to put in my Auto Transmission.
http://www.autozone.com/autozone/parts/ ... 7_0_104244
Autozone.com actually has a fantastic amount of repair information on K cars in general.