Product Description
Genuine GM 1997030 Automatic Headlight Sensor (NOS)
Enhance your classic GM vehicle with this genuine New Old Stock (NOS) GM 1997030 Automatic Headlight Sensor. This crucial component is designed for the "Twilight Sentinel" or "Automatic Headlight" system, allowing your headlights to turn on and off automatically based on ambient light conditions. Sourced from original GM inventory, this sensor ensures authentic performance and fitment for a range of 1961-1971 Buick models, 1961 Chevrolet Impala, Bel Air, and Biscayne, and 1961-1962 Cadillac DeVille, Fleetwood, and Eldorado models equipped with the automatic headlight option.
NEW Out of original box
Key Features:
- Brand: GM
- Part Number: 1997030
- OEM Number: 1997030
- Interchange: D806
- Position: Automatic Headlight Sensor / Twilight Sentinel Sensor
- Origin: USA
- Condition: NOS (New Old Stock)
Fitment:
| Make | Model | Year | Engine | Notes |
| Buick | Electra / LeSabre / Wildcat / Riviera / Skylark / Special / GS / Centurion / Estate Wagon | 1961-1971 | With Twilight Sentinel / Automatic Headlight System | |
| Chevrolet | Impala / Bel Air / Biscayne | 1961 | With Twilight Sentinel / Automatic Headlight System | |
| Cadillac | DeVille / Fleetwood / Eldorado / Series 62 | 1961-1962 | With Twilight Sentinel / Automatic Headlight System |
Fits Years:
1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971
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.
