This procedure covers the removal and replacement of the HVAC blower motor assembly on the 2024 Rivian EDV 500 electric delivery van.

Warnings

Tools required

Parts

• HVAC blower motor assembly × 1 — Use OEM specification
• Blower motor seal/gasket × 1 — Use OEM specification
• Interior panel clips (as needed) × 5 — Rivian trim clips

Preparation

1. Park vehicle on level surface and engage parking brake
2. Disconnect 12V battery negative terminal and wait minimum 2 minutes
3. Ensure HVAC system is completely off and cooled down
4. Remove floor mats from passenger side footwell area
5. Adjust passenger seat fully rearward and reclined for access

Procedure

1. 1

   Remove lower passenger side trim panel
   Locate and remove the lower dash trim panel on the passenger side. Use panel removal tools to carefully release the retaining clips starting from the bottom edge. There are typically 6-8 clips securing this panel. Disconnect any electrical connectors for courtesy lights if equipped, then set panel aside.
2. 2

   Remove glove box assembly
   Open glove box and remove contents. Locate two T30 Torx screws at the top hinge points and remove them. Squeeze the sides of the glove box inward to release the side stops, then lower and remove the entire glove box assembly. Disconnect the damper cable if present.
3. 3

   Access blower motor housing
   With the glove box removed, locate the blower motor housing on the passenger side of the HVAC unit. Remove the sound insulation foam pad covering the blower motor area by releasing the retaining clips. You should now see the cylindrical blower motor housing with its electrical connector visible.
4. 4

   Disconnect blower motor electrical connector
   Locate the main electrical connector on the blower motor. Press the locking tab and carefully pull the connector straight off the motor terminals. If a blower motor resistor is present as a separate component, disconnect its electrical connector as well and note the routing for reinstallation.
5. 5

   Remove blower motor resistor (if equipped)
   If the blower motor resistor module is mounted separately near the motor, remove the mounting screws securing it to the HVAC housing. Set the resistor aside with its wiring harness.
   Torque spec

   Blower Motor Resistor Screws2 Nm (1.5 lb-ft)
6. 6

   Remove blower motor mounting screws
   Locate the three mounting screws securing the blower motor to the HVAC housing. These are typically positioned around the perimeter of the motor housing. Use a T20 Torx driver to remove all mounting screws. Support the motor with one hand while removing the final screw to prevent it from falling.
7. 7

   Extract blower motor assembly
   Carefully rotate and pull the blower motor assembly downward and out of the HVAC housing. The motor with its fan wheel attached may require slight rotation to clear the housing opening. Avoid striking the fan blades on surrounding components. Inspect the mounting seal and replace if damaged or deteriorated.
8. 8

   Clean mounting surface
   With the old motor removed, clean the mounting flange area on the HVAC housing using a clean cloth. Remove any debris, old seal material, or contamination from the sealing surface. Inspect the housing opening for any debris that may have fallen into the HVAC system and remove if found.
9. 9

   Install new blower motor seal
   Position the new blower motor seal or gasket onto the new motor housing, ensuring it is properly seated in its groove. The seal should be evenly positioned around the entire perimeter with no gaps or twisted sections.
10. 10

    Install new blower motor
    Carefully guide the new blower motor assembly into the HVAC housing opening. Rotate as needed to align the fan wheel with the housing and avoid contact with internal ductwork. Align the mounting holes with the housing and ensure the seal is properly positioned before inserting screws.
11. 11

    Secure blower motor mounting screws
    Install all three blower motor mounting screws finger-tight first to ensure proper alignment. Using a torque wrench, tighten the mounting screws in a star pattern to the specified torque.
    Torque spec

    Blower Motor Screws4 Nm (3 lb-ft)
12. 12

    Reinstall blower motor resistor
    If removed, reinstall the blower motor resistor module to its mounting location. Secure with mounting screws to the specified torque. Ensure the resistor is properly seated and not in contact with any moving parts.
    Torque spec

    Blower Motor Resistor Screws2 Nm (1.5 lb-ft)
13. 13

    Reconnect electrical connections
    Reconnect the main blower motor electrical connector, ensuring it clicks securely into place with the locking tab engaged. If applicable, reconnect the blower motor resistor connector. Verify all connections are secure and properly seated.
14. 14

    Reinstall interior components
    Reinstall the sound insulation foam pad over the blower motor area. Reinstall the glove box assembly by connecting the damper cable, positioning the box into the dash opening, and securing with the two T30 Torx screws at the hinge points. Reinstall the lower passenger side trim panel, ensuring all retaining clips engage properly and any electrical connections for courtesy lights are reconnected.

Reassembly

1. Ensure all electrical connectors are fully seated with locking tabs engaged
2. Verify all interior trim panels are securely clipped with no gaps or misalignment
3. Confirm glove box operates smoothly and damper functions correctly
4. Replace any broken trim clips discovered during disassembly

Verification

• Reconnect 12V battery negative terminal
• Start vehicle and turn HVAC system to maximum fan speed and verify smooth, quiet operation with no unusual noises
• Test all fan speed settings from low to high to confirm proper blower motor and resistor operation
• Verify adequate airflow from all cabin vents in various HVAC mode settings
• Check for air leaks around blower motor mounting area by listening for whistling sounds
• Confirm no warning lights or HVAC fault codes are present in vehicle systems
• Verify all interior trim panels are secure and properly aligned

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