Product Description
Genuine GM 391948 Relay (NOS)
This genuine New Old Stock (NOS) GM 391948 multi-purpose relay is a critical electrical component designed for a wide range of General Motors vehicles from 1961 through 1984. Manufactured in the USA, this versatile relay was used across various Chevrolet, Pontiac, Oldsmobile, Buick, and Cadillac models, including popular lines such as the Corvette, Camaro, Firebird, Impala, Chevelle, Cutlass, Skylark, and C/K Series trucks. It served multiple functions, including HVAC blower motor control, fast idle operation, window defogger activation, and headlight actuator control, making it an essential part for maintaining the original electrical integrity of your classic GM vehicle.
Key Features:
- Brand: GM (General Motors)
- Part Number: 391948
- OEM Number: 391948
- Interchange: RY-8
- Position: Multi-purpose (HVAC Blower, Fast Idle, Window Defogger, Headlight Actuator)
- Origin: USA
- Condition: NOS (New Old Stock)
Fitment:
| Make | Model | Year | Engine | Notes |
|---|---|---|---|---|
| Chevrolet | Corvette / Camaro / Chevelle / Impala / Nova / C/K Truck | 1961-1984 | All | HVAC / Fast Idle / Window Defogger / Headlight Actuator |
| Pontiac | Firebird / GTO / Grand Prix | 1961-1984 | All | HVAC / Fast Idle / Window Defogger / Headlight Actuator |
| Oldsmobile | Cutlass / 442 / Delta 88 | 1961-1984 | All | HVAC / Fast Idle / Window Defogger / Headlight Actuator |
| Buick | Skylark / Riviera / LeSabre | 1961-1984 | All | HVAC / Fast Idle / Window Defogger / Headlight Actuator |
| Cadillac | Eldorado / DeVille / Fleetwood | 1961-1984 | All | HVAC / Fast Idle / Window Defogger / Headlight Actuator |
Fits Years:
1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984
Note on Stock Photos: Due to our inventory of multiple identical units for this specific part number, we utilize representative stock photos for this listing. You will receive a component that strictly meets all listed specifications and fitment requirements. Please be aware that because these are vintage parts, minor cosmetic variations—such as surface finish, color, or production markings—may exist between different manufacturing runs. These slight aesthetic differences are a result of historical production processes and do not impact the part's integrity, performance, or authenticity.
A Note on Fitment Accuracy: We manually research our fitment data using vintage manufacturer catalogs to provide you with the most accurate information possible. However, because we are human and these decades-old resources can occasionally contain errors, we cannot guarantee 100% accuracy. We strongly encourage you to perform your own due diligence and verify this part number for your specific application before purchasing. Please note that this part may also fit other vehicles or years not explicitly listed in our research.
Unbeatable Prices & Expectations
While many of our vintage parts were manufactured decades ago, they remain unused and high-quality. Some original boxes may show signs of shelf-wear, such as dust, tape, or surface distress from years of storage. Rest assured, the components inside have been inspected to ensure they are complete and ready to help you finish your project without breaking the bank.
