Chevrolet Colorado/GMC Canyon Schematics Chevrolet Colorado/GMC Canyon Schematics. Select your vehicle's Year, Model, and Engine from the drop down lists below and then click "View Schematics" to see the schematics for your vehicle. 2004-2008 Chevrolet Colorado Vehicle Wiring Chart and Diagram Commando Car Alarms offers free wiring diagrams for your 2004-2008 Chevrolet Colorado. Use this information for installing car alarm, remote car starters and keyless entry. View our complete listing of wiring diagrams for your Chevrolet Colorado. Need Wiring Schematics or TSBs? Look here! | Chevy So have a 08 chevy colorado, was having rear drum brake problems and came to find out my axle seal was leaking. Proceeded to drain the differential, removed the c clip for driver side axle, and pulled the seal out. Decided to replace bearing also. Used the slime hammer and came out in four hits..