GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC Suburban - 4WD 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Auxiliary Mode Valve Actuator Replacement

Removal Procedure
  1. Remove the left side rear quarter trim. Refer to Rear Quarter Trim Panel Replacement in Interior Trim.
  2. Disconnect the vacuum line from the vacuum actuator.
  3. Remove the vacuum actuator from the heater A/C module.

Installation Procedure
  1. Install the vacuum actuator to the heater A/C module.
  2. Connect the vacuum line to the vacuum actuator.
  3. Install the left side rear quarter trim. Refer to Rear Quarter Trim Panel Replacement in Interior Trim.