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2024 GMC Sierra HD Products
Gen5DIY specializes in plug and play harnesses for your 2024 GMC Sierra HD.  All of our harnesses are hand built in house.  We pride ourselves in making our harness very simple to install as well as using quality components. These are truly Plug & Play products.

2024 GMC Sierra HD Products

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External Bed Light Switch Kit
External Bed Light Switch Kit

DIY Kits

From $48.99
2024-25 HD Sierra Radar Detector Harness
2024-25 HD Sierra Radar Detector Harness

P&P Harness

From $103.99
2019-2025 Full Size Truck Flashing 3rd Brake Light Harness
2019-2025 Full Size Truck Flashing 3rd Brake Light Harness

$63.99
20-23 GMC HD to 24-25 HD Headlight Harness
20-23 GMC HD to 24-25 HD Headlight Harness

P&P Harness

From $172.99
2024-25 Silverado/Sierra HD Models-Dash Cam Harness
2024-25 Silverado/Sierra HD Models-Dash Cam Harness

P&P Harness

$134.99
24-25 Sierra HD AT4X AEV Reverse Lamp Harness

P&P Harness

$149.99
20-23 Silverado HD to 24-25 HD Headlight Harness

P&P Harness

$205.99