EI05082 - Loss of Blower Motor Speeds Except for Low Speed or Inoperative (Replace Blower Motor Resistor and Resistor Module Connector) keyword fan #05-01-38-012C - (11/02/2006)

Subject:

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)

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:

Remove the blower fuse.

•	Fullsize Trucks and Utility Vehicles -- Htr A/C & HVAC 1 fuses

•	Midsize Utility Vehicles -- Blower Fuse 35 located in the Underhood Fuse Block

Lower the hush panel or close-out panel enough to gain access to the resistor module connector.
Disconnect the connector from the resistor module.
Remove the tape from the wiring harness to expose the wiring.

Cut the wires back far enough from the connector to eliminate any melted insulation on the wire.
Install the new connector. Use the yellow splice sleeves provided with the connector.
Install new blower motor resistor.
Reinstall the fuse or connector block. Test the blower motor to make sure all speeds are functional.
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