Help your truck's HVAC blower hold its selected fan speeds with the Four Seasons switch 35888, an HVAC blower motor resistor built for vehicle-specific applications. It fits many trucks, among them the 1981-1987 GMC Brigadier, 1988-1992 Peterbilt 376 and 1989-1997 Kenworth T400, as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list.
In the blower circuit, the resistor adds resistance so the fan motor can run at the lower speed settings, which lets you set how much air moves through the HVAC system. This part is listed as both an HVAC Blower Motor Resistor and a Switch. They are the same part.
- Quality contacts: Designed for proper electrical conductivity.
- OE-style connectors: Connectors styled after the original equipment.
- Vehicle-specific applications: Cataloged for the listed truck applications.
- Four Seasons experience: Engineered and tested to provide years of trouble-free operation, drawing on more than 50 years of Four Seasons mobile A/C experience.
Signs this part may need replacing: the blower runs on only some speeds, often only on high, or does not run on the lower settings. A blower motor, control switch or wiring fault can cause similar symptoms, so diagnose the cause before replacing. If a failed resistor is the cause, the 35888 replaces it.
