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EI05082 - Loss of Blower Motor Speeds Except for Low Speed or Inoperative (Replace Blower Motor Resistor and Resistor Module Connector) keyword fan

Subject:EI05082 -- Loss of Blower Motor Speeds Except for Low Speed or Inoperative (Replace Blower Motor Resistor and Resistor Module Connector)

Models:2004-2006 Chevrolet Avalanche, Silverado, Suburban, Tahoe, TrailBlazer, TrailBlazer EXT
2007 Chevrolet Silverado (Classic) Built Prior to September 1, 2006
2004-2006 GMC Envoy, Envoy XL, Sierra, Yukon, Yukon Denali, Yukon XL
2007 GMC Sierra (Classic) Built Prior to September 1, 2006
with HVAC System AC Front, Manual Temp Control (RPO CJ3) or Heater Only (RPO C42)



This bulletin is being revised to clarify the Warranty Information. Please discard Corporate Bulletin Number 05-01-38-012B (Section 01 -- HVAC).


Condition

Some customers may comment that the blower will only work on low speeds or has become inoperative.

Correction

REPLACE THE BLOWER MOTOR RESISTOR AND RESISTOR MODULE CONNECTOR.

Replace the blower motor resistor and module connector using the following procedure:

  1. Remove the blower fuse.
  2. • Fullsize Trucks and Utility Vehicles -- Htr A/C & HVAC 1 fuses
    • Midsize Utility Vehicles -- Blower Fuse 35 located in the Underhood Fuse Block
  3. Lower the hush panel or close-out panel enough to gain access to the resistor module connector.
  4. Disconnect the connector from the resistor module.
  5. Remove the tape from the wiring harness to expose the wiring.

  6. Object Number: 1709080  Size: SH
  7. Cut the wires back far enough from the connector to eliminate any melted insulation on the wire.
  8. Tip
    Use the old connector as a map for splicing the wires for the new connector. Be sure to use the correct crimping tool from the terminal repair kit J 38125. Use only Duraseal splice sleeves. Other splice sleeves may not protect the splice from moisture or provide a good electrical connection.

  9. Install the new connector. Use the yellow splice sleeves provided with the connector.
  10. Install new blower motor resistor.
  11. Reinstall the fuse or connector block. Test the blower motor to make sure all speeds are functional.
  12. Reinstall the hush panel/close-out panel.

Parts Information

Important: To determine which resistor to use for Fullsize Truck/Utility vehicles, search the parts catalog using the vehicle's VIN.

Part Number

Description

Qty

15862656

Connector - Resistor Blower Motor (includes splice sleeves)

1

89019088

Resistor -- Blower Motor (Fullsize Truck/Utility)

1

89019089

Resistor -- Blower Motor (Fullsize Truck/Utility)

1

89019100

Resistor -- HVAC & A/C (midsize utility vehicles)

1

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

N9561*

HVAC Module Connector and Resistor - Replace

0.6 hr

*This is a unique labor operation number for bulletin use only. This number will not be published in the Labor Time Guide.