2021 Tahoe Suburban Yukon Escalade Engine Wiring Harness Junction B...
This is a genuine OEM GM Engine Wiring Harness Junction Block, also known as a Fuse & Relay Box, designed for the 2021 Chevrolet Tahoe, 2021 Chevrolet Suburban, 2021 GMC Yukon, and 2021 Cadillac Escalade. It serves as the central junction point for engine wiring harness connections and is a direct replacement for the factory unit.
This part is a genuine GM OEM component, backed by GM's factory warranty and guaranteed to meet original factory specifications. It fits 6-cylinder 3.0L Diesel, 8-cylinder 5.3L, and 8-cylinder 6.2L engine applications across compatible vehicles. Please note that only the junction block assembly itself is included — refer to your vehicle's diagram and confirm Part Reference #1 is the component you need before purchasing.
| Year Range | Make | Model | Trim/Engine | Notes/Options |
|---|---|---|---|---|
| 2021 | Chevrolet | Tahoe | 8 Cyl 5.3L, 8 Cyl 6.2L | 4 Door 1/2 Ton |
| 2021 | Chevrolet | Suburban | 8 Cyl 5.3L, 8 Cyl 6.2L | 1/2 Ton |
| 2021 | GMC | Yukon | 6 Cyl 3.0L Diesel, 8 Cyl 5.3L, 8 Cyl 6.2L | 1/2 Ton; Yukon/Denali |
| 2021 | Cadillac | Escalade | 6 Cyl 3.0L Diesel, 8 Cyl 6.2L | 1/2 Ton; Escalade/Escalade ESV |
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