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).
Some customers may comment that the blower will only work on low speeds or has become inoperative.
REPLACE THE BLOWER MOTOR RESISTOR AND RESISTOR MODULE CONNECTOR.
Replace the blower motor resistor and module connector using the following procedure:
• | Fullsize Trucks and Utility Vehicles -- Htr A/C & HVAC 1 fuses |
• | Midsize Utility Vehicles -- Blower Fuse 35 located in the Underhood Fuse Block |
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.
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 |
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 This number will not be published in the Labor Time Guide. |