Colorado 2WD L5-3.5L VIN 6 (2005)
4. Using a flat-bladed screwdriver (1), release the main locking tab on the plastic brake pipe retainer. Right side shown, left side similar.
5. Using a small flat-bladed screwdriver, release the secondary locking tab. Right side shown, left side similar.
6. Remove the rear axle brake pipe retaining bracket. Right side shown, left side similar.
7. Remove the brake pipe from the wheel cylinder.