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HOMESERVICE MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 152 (HVAC SYSTEM - AUTOMATIC)REPAIR INSTRUCTIONSMODE ACTUATOR REPLACEMENT
2009 Chevrolet Tahoe Base, 4.8 C

Mode Actuator Replacement

2009 Chevrolet Tahoe Base, 4.8 CSECTION Mode Actuator Replacement
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: View Of Mode Actuator & Screws
GM1696344Courtesy of GENERAL MOTORS CORP.
Callout Component Name
NOTE: In order to avoid actuator damage, DO NOT apply power to the actuator when it is not installed in the HVAC module.

Preliminary Procedure

  1. Remove the knee bolster. Refer to Knee Bolster Replacement (Except Cadillac) or Knee Bolster Replacement (Cadillac) .
  2. Remove the air outlet duct - floor LH. Refer to Floor Air Outlet Duct Replacement - Left Side .
  3. Disconnect the electrical connector from the mode actuator.
1 Mode Actuator Screw (Qty: 2)
NOTE: Refer to Fastener Notice .

Tighten:  1.6 N.m (14 lb in)
2 Mode Actuator
Procedure: 
Re-calibrate the mode actuator. Refer to Actuator Recalibration .
Tip:  Mode actuator cam is now accessible.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.