Blower Motor

This procedure removes and replaces the HVAC blower motor assembly located in the passenger compartment of the 2023 Chevrolet Bolt EUV.

Warnings

Tools required

Parts

• HVAC Blower Motor Assembly × 1 — Use OEM specification
• Blower Motor Resistor (if damaged) × 1 — Use OEM specification

Preparation

1. Park the vehicle on a level surface and turn off all systems
2. Ensure the ignition is OFF and remove the key fob from the vehicle
3. Allow the HVAC system to cool completely if recently operated
4. Open the passenger door for access to the lower dash area

Procedure

1. 1

   Remove passenger side lower dash panel
   Locate the lower dash trim panel on the passenger side beneath the glove box. Use the trim panel removal tool to carefully release the retaining clips. Start from the bottom edge and work upward. Pull the panel away from the dash and set aside. On the Bolt EUV, this panel is held by approximately 6-8 push clips.
2. 2

   Disconnect blower motor resistor connector
   Locate the blower motor resistor module mounted near the blower motor housing. Press the locking tab on the electrical connector and disconnect it from the resistor. If removing the resistor, remove the two mounting screws using a 7mm socket.
   Torque spec

   Blower Motor Resistor Screws2 Nm (1.5 lb-ft)
3. 3

   Disconnect blower motor electrical connector
   Locate the main blower motor electrical connector. This is a larger connector with a positive locking mechanism. Press the release tab firmly and pull the connector straight off the motor. You may need to wiggle it gently while applying pressure to the release tab.
4. 4

   Remove blower motor mounting screws
   Locate the three blower motor mounting screws around the perimeter of the motor housing. These are typically positioned at the 12 o'clock, 4 o'clock, and 8 o'clock positions. Remove all three screws using a 7mm socket. Support the blower motor with one hand as you remove the final screw to prevent it from falling.
   Torque spec

   Blower Motor Screws4 Nm (3 lb-ft)
5. 5

   Remove blower motor assembly
   Carefully pull the blower motor assembly straight down and out of the HVAC housing. You may need to rotate it slightly to clear the housing opening. The motor has a squirrel cage fan attached, so be careful not to damage the fan blades. Once clear, lower it out of the dash area.
   ⚠The blower motor fan cage is plastic and can be easily damaged. Handle carefully and avoid contact with surrounding components.
6. 6

   Inspect blower motor housing
   With the motor removed, use a flashlight to inspect the HVAC housing for debris, leaves, or obstructions. Use a shop vacuum to clean out any accumulated material. Check the resistor module for signs of burning or damage. Inspect the electrical connectors for corrosion or damage.
7. 7

   Install new blower motor assembly
   Position the new blower motor assembly near the housing opening. Carefully guide the motor and fan cage up into the HVAC housing, rotating as needed to align. Once fully seated, the mounting screw holes should align with the housing. Install all three mounting screws and tighten to specification using a torque wrench.
   Torque spec

   Blower Motor Screws4 Nm (3 lb-ft)
8. 8

   Reconnect electrical connections
   Connect the main blower motor electrical connector, ensuring it clicks into place and the locking tab engages fully. If the resistor was removed, reinstall it with its mounting screws torqued to specification, then reconnect its electrical connector until it clicks.
   Torque spec

   Blower Motor Resistor Screws2 Nm (1.5 lb-ft)
9. 9

   Test blower motor operation
   Before reinstalling the lower dash panel, turn the vehicle to ON/RUN mode (do not start). Test the blower motor at all speed settings (low, medium-low, medium-high, and high). Listen for unusual noises and verify smooth operation at each speed. Check for proper airflow from all vents. Turn the vehicle off.
10. 10

    Reinstall passenger lower dash panel
    Position the lower dash trim panel and align all mounting clip locations. Press firmly at each clip location until you hear or feel each clip engage. Verify the panel is secure and flush with surrounding trim.

Reassembly

1. Ensure all electrical connectors are fully seated with locking tabs engaged
2. Verify the lower dash panel is properly secured with all clips engaged
3. Check that no tools or parts were left in the dash area

Verification

• Turn the vehicle to RUN mode and test blower motor at all four speed settings
• Verify airflow is strong and consistent at each speed with no unusual noises
• Check that air direction controls function properly with the new motor
• Confirm no rattles or loose panels when operating the blower motor
• Test in both fresh air and recirculation modes to ensure proper operation

Related trouble codes on this vehicle

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