GM SPO Group Numbers. GMC Truck GMC C-Series Medium Duty Truck B7 1999

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC C-Series Medium Duty Truck B7 🢒 Body and Accessories 🢒 Horns 🢒 GM SPO Group Numbers

Application	GM SPO Group Number
Horn	2.810
Horn Relay	2.815