GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Impala 🢒 Body and Accessories 🢒 Horns 🢒 Scan Tool Data List

BCM must be properly powered

Scan Tool Parameter

Units Displayed

Typical Data Value

Horn Relay

On/Off

Off