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Dorman 973-400 HVAC Blower Motor Resistor Kit
| Brand | Dorman 973-400 |
|---|---|
| Connector Gender | Female |
| Connector Quantity | 1 |
| Gasket or Seal Included | No |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 2 |
| Package Contents | 1 Blower Motor Resistor; 1 Wire Harness |
| Terminal Gender | Male |
| Terminal Quantity | 5 |
| Terminal Type | Blade |
| Wire Quantity | 5 |
| Wiring Harness Included | Yes |
| Wiring Harness Length | 6 |
| Fits | Chevrolet, Pontiac, and Oldsmobile · 25 vehicles |
Resistor kit. Includes a resistor and harness pigtail for a complete electrical repair.
Harness included. Comes with a 6-inch wire harness and matching connector for easier replacement.
Blade terminals. Five-wire, female connector with male blade terminals for secure electrical contact.
Cross-references 3A1026, 15305921 and DR774 for the same application. See all 6.
Dorman 973-400 HVAC Blower Motor Resistor Kit
Dorman 973-400 is an HVAC blower motor resistor kit that replaces an overheated or corroded original resistor and restores blower speed control on select vehicles. It includes the resistor and a replacement harness pigtail for a direct repair on common GM applications, including Chevrolet Malibu, Pontiac Grand Am, and Oldsmobile Alero.
Key Features
- Includes a blower motor resistor and wire harness pigtail
- Uses a 5-wire, 5-terminal design with blade terminals
- Female connector with male terminals for the repair connection
- 6-inch wiring harness length
- 2 mounting holes for OE-style installation points
- Direct replacement for overheated or corroded factory resistor assemblies
Product Details
This HVAC blower motor resistor kit is built for vehicles that use a resistor-based blower speed circuit rather than an electronic control module. Dorman 973-400 addresses common failure points at the resistor and connector interface, where heat damage and corrosion can interrupt blower operation. It is a practical replacement for select Chevrolet Malibu, Pontiac Grand Am, Oldsmobile Alero, Chevrolet Classic, and Oldsmobile Cutlass applications. This part cross-references Dorman OE Solutions-style replacement numbers such as RU43 and RU872 for the same application.
What It Helps Fix
- Blower motor only working on certain speeds
- No cabin airflow from the HVAC vents
- Intermittent blower operation caused by a damaged resistor connector
- Heat-related melting or corrosion at the resistor harness
- Loss of fan speed control in the HVAC system
Installation Notes
Verify connector style, terminal count, and vehicle fitment before installation. This kit uses a female connector with male blade terminals and a 5-wire harness layout, so matching the original configuration is important for a proper repair. Confirm application details for 1999-2005 Pontiac Grand Am, 1999-2004 Oldsmobile Alero, 1997-2003 Chevrolet Malibu, 2004-2005 Chevrolet Classic, and 1997-1999 Oldsmobile Cutlass; Grand Am listings exclude climate control models.
- Fits 2004-2005 Chevrolet Classic, N/A
- Fits 1999-2005 Pontiac Grand Am, N/A, Exc. Climate Control
- Fits 1999-2004 Oldsmobile Alero, N/A
- Fits 1997-2003 Chevrolet Malibu, N/A
- Fits 1997-1999 Oldsmobile Cutlass, N/A
Quality Assurance
Dorman designs replacement parts to match the original service function and restore failed HVAC electrical connections with OE-style fitment. Part number 973-400 is built for repair-focused replacement on the listed GM vehicles and is supported by Dorman’s aftermarket engineering standards.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Chevrolet | Classic | 2.2L | L4 | N/A | — |
| 2005 | Pontiac | Grand Am | — | — | N/A | Exc. Climate Control |
| 2004 | Chevrolet | Classic | 2.2L | L4 | N/A | — |
| 2004 | Oldsmobile | Alero | — | — | N/A | — |
| 2004 | Pontiac | Grand Am | — | — | N/A | Exc. Climate Control |
| 2003 | Chevrolet | Malibu | — | — | N/A | — |
| 2003 | Oldsmobile | Alero | — | — | N/A | — |
| 2003 | Pontiac | Grand Am | — | — | N/A | Exc. Climate Control |
| 2002 | Chevrolet | Malibu | — | — | N/A | — |
| 2002 | Oldsmobile | Alero | — | — | N/A | — |
| 2002 | Pontiac | Grand Am | — | — | N/A | Exc. Climate Control |
| 2001 | Chevrolet | Malibu | — | — | N/A | — |
| 2001 | Oldsmobile | Alero | — | — | N/A | — |
| 2001 | Pontiac | Grand Am | — | — | N/A | Exc. Climate Control |
| 2000 | Chevrolet | Malibu | — | — | N/A | — |
| 2000 | Oldsmobile | Alero | — | — | N/A | — |
| 2000 | Pontiac | Grand Am | — | — | N/A | Exc. Climate Control |
| 1999 | Chevrolet | Malibu | — | — | N/A | — |
| 1999 | Oldsmobile | Alero | — | — | N/A | — |
| 1999 | Oldsmobile | Cutlass | — | — | N/A | — |
| 1999 | Pontiac | Grand Am | — | — | N/A | Exc. Climate Control |
| 1998 | Chevrolet | Malibu | — | — | N/A | — |
| 1998 | Oldsmobile | Cutlass | — | — | N/A | — |
| 1997 | Chevrolet | Malibu | — | — | N/A | — |
| 1997 | Oldsmobile | Cutlass | — | — | N/A | — |
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