Front Driver Side Suspension Automatic Forward Lighting Position Sensor - GM (84365778)
Genuine OEM GM Parts & Accessories - 84365778
Front Driver Side Suspension Automatic Forward Lighting Position Sensor - GM (84365778)
Genuine OEM GM Parts & Accessories - 84365778
- GM
- 84365778
- 23404138
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- MSRP: $82.07
- You Save: $34.10 (41.5% off)
- Sale Price: $47.97
- MSRP: $82.07
- Discount: $34.10 (41.5% off)
- Sale Price: $47.97
Also Purchased

- GM
- 84365778
- 23404138
Details
- Brand:
- SKU:
84365778
- Positions: Left Front, Left
- Other Names:
Height Sensor
- Description: GM Genuine Parts Front Driver Side Suspension Automatic Forward Lighting Position Sensor (Part Number: 84365778) is an OE suspension height/position sensor that provides vertical orientation input to automatic forward lighting systems so headlamp aim can be adjusted for vehicle pitch.Shop with World Parts Direct — a homegrown U.S. company offering competitive pricing, compatibility guarantee, expert tech support, and OEM-backed warranty coverage.
- Also known as: Height Sensor
- Function: Detects vehicle pitch (tilt forward/back) and relays position for headlamp leveling
- Location: Front driver side (left)
- Application: Used with automatic headlamp leveling systems to improve visibility
- Condition: New
- Replaces:
23404138
Vehicle Fitment
| Year | Make | Model | Body & Trim | Engine & Transmission |
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GM

Built with GM’s engineering expertise, ACDelco and OEM GM parts are factory original equipment replacement parts for your Chevy, Buick, Cadillac, GMC, Saturn, Pontiac, Oldsmobile or Hummer. Every ACDelco and OEM GM part is rigidly held to federal safety and quality standards and is guaranteed by GM Replacement Parts Limited Warranty. You can trust GM Genuine Parts when ordering this Front Driver Side Suspension Automatic Forward Lighting Position Sensor for your 2017-2025 vehicle. GM Parts & Accessories Limited Warranty.