Description
The 86291952 Genuine GM Rear Stop Lamp Assembly is an exterior lighting component designed for compatible 2019–2026 GMC Sierra 1500 trucks, providing rearward brake signal illumination through the corresponding factory lighting system to communicate vehicle deceleration to approaching traffic. The assembly is configured for installation within the rear body structure, supporting stop lamp operation, proper positioning within the original rear lighting arrangement, and integration with the designated vehicle electrical circuits across the specified AT4 and AT4X applications.
Vehicle Compatibility
| Year |
Vehicle |
Engine |
Trims |
| 2026 |
GMC Sierra 1500 |
3.0L L6 Diesel |
AT4 |
| 2026 |
GMC Sierra 1500 |
6.2L V8 Gas |
AT4 |
| 2026 |
GMC Sierra 1500 |
3.0L L6 Diesel |
AT4X |
| 2025 |
GMC Sierra 1500 |
3.0L L6 Diesel |
AT4 |
| 2025 |
GMC Sierra 1500 |
6.2L V8 Gas |
AT4 |
| 2025 |
GMC Sierra 1500 |
3.0L L6 Diesel |
AT4X |
| 2024 |
GMC Sierra 1500 |
3.0L L6 Diesel |
AT4 |
| 2024 |
GMC Sierra 1500 |
6.2L V8 Gas |
AT4 |
| 2024 |
GMC Sierra 1500 |
3.0L L6 Diesel |
AT4X |
| 2024 |
GMC Sierra 1500 |
6.2L V8 Gas |
AT4X |
| 2023 |
GMC Sierra 1500 |
3.0L L6 Diesel |
AT4 |
| 2023 |
GMC Sierra 1500 |
6.2L V8 Gas |
AT4 |
| 2023 |
GMC Sierra 1500 |
6.2L V8 Gas |
AT4X |
| 2022 |
GMC Sierra 1500 |
3.0L L6 Diesel |
AT4 |
| 2022 |
GMC Sierra 1500 |
6.2L V8 Gas |
AT4 |
| 2022 |
GMC Sierra 1500 |
3.0L L6 Diesel |
AT4X |
| 2022 |
GMC Sierra 1500 |
6.2L V8 Gas |
AT4X |
| 2021 |
GMC Sierra 1500 |
3.0L L6 Diesel |
AT4 |
| 2021 |
GMC Sierra 1500 |
5.3L V8 Gas |
AT4 |
| 2021 |
GMC Sierra 1500 |
6.2L V8 Gas |
AT4 |
| 2020 |
GMC Sierra 1500 |
3.0L L6 Diesel |
AT4 |
| 2020 |
GMC Sierra 1500 |
5.3L V8 Gas |
AT4 |
| 2020 |
GMC Sierra 1500 |
6.2L V8 Gas |
AT4 |
| 2019 |
GMC Sierra 1500 |
5.3L V8 Gas |
AT4 |
| 2019 |
GMC Sierra 1500 |
6.2L V8 Gas |
AT4 |
General Specifications
| Condition |
New |
| Part Number |
86291952 |
| Brand |
GM |
| Part Type |
Rear Stop Lamp Assembly |
| Part Description |
Lamp Assembly; Lamp Assembly - Rear Body Structure Stop |
| Years |
2019–2026 |
| Vehicle Applications |
GMC Sierra 1500 |
| Engine Configuration |
3.0L L6 Diesel / 5.3L V8 Gas / 6.2L V8 Gas |
| Position |
Rear Body Structure |
Product Features
The 86291952 Genuine GM Rear Stop Lamp Assembly is configured for the rear body structure lighting system on compatible 2019–2026 GMC Sierra 1500 trucks:
-
Provides rear stop lamp illumination to communicate braking activity to vehicles approaching from behind
-
Supports brake signal operation through the corresponding factory rear exterior lighting circuit
-
Incorporates the specified lamp assembly configuration for installation within the rear body structure
-
Maintains the designated rear lighting position relative to surrounding vehicle body components
-
Contributes to rearward signaling visibility when the vehicle brake lighting circuit is activated
-
Accommodates the original rear lamp mounting arrangement when electrical and attachment interfaces correspond
Application Notes
The 86291952 Rear Stop Lamp Assembly is intended for 2019–2026 GMC Sierra 1500 trucks equipped with the corresponding factory rear body structure lighting configuration, including the specified AT4 and AT4X applications with 3.0L diesel, 5.3L gasoline, or 6.2L gasoline engines identified in the vehicle compatibility table. Before installation, inspect the original rear lamp mounting provisions, electrical connector arrangement, surrounding body panel alignment, and associated wiring, then confirm secure assembly attachment and proper brake light operation according to the applicable GM service procedure.
Always verify the part number, 2019–2026 GMC Sierra 1500 application, trim level, engine configuration, rear lamp mounting location, and original lighting equipment before installation.
