GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2003 🢒 Envoy - 2WD 🢒 Body and Accessories 🢒 Cruise Control 🢒 Cruise Control Schematics
Figure 1:

TAC Motor, APP Sensor, On/Off Switch and Stop Lamp Switch - 4.2L Only
Object Number: 863249 Size: FS
Figure 2:

TAC Module, TAC Motor, APP Sensor, On/Off Switch and Stop Lamp Switch - 5.3L Only
Object Number: 863252 Size: FS
Figure 3:

ECBM and Vehicle Speed Signal
Object Number: 863254 Size: FS