GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Envoy - 2WD 🢒 Engine 🢒 Engine Electrical 🢒 Power Brake Booster Vacuum Check Valve and Hose Replacement

Removal Procedure

    Object Number: 748024 Size: SH
  1. Remove the vacuum brake booster check valve from the vacuum brake booster.
  2. Remove the vacuum brake booster hose clamp at the check valve.
  3. Remove the vacuum brake booster check valve from the hose.
  4. Disconnect the vacuum brake booster hose at the engine.
  5. Remove the vacuum brake booster hose from the vehicle.

Installation Procedure

    Object Number: 748024 Size: SH
  1. Connect the vacuum brake booster hose at the engine.
  2. Install the vacuum brake booster check valve to the hose.
  3. Install the vacuum brake booster hose clamp to the check valve.
  4. Install the vacuum brake booster check valve to the vacuum brake booster.