Gen5DIY normal business hours are M-T 7:30 AM-3:00 PM PST and Fridays from 7-11 AM MST. 928-733-0936. Gen5diy1@gmail.com GenDIY will be closed Friday the 30th thru the 2nd in observation of Labor Day!
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  2. 19-21 Sierra Plug & Play Harnesses
Gen5DIY specializes in plug and play harnesses for your 2019-2022 GMC Sierra.  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.

19-21 Sierra Plug & Play Harnesses

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2019-2022 New Body GMC Sierra Radar Detector Harness and 23 HD models
2019-2022 New Body GMC Sierra Radar Detector Harness and 23 HD models

P&P Harness

From $54.99
2019-2023 GM Truck LED Taillight Harness
2019-2023 GM Truck LED Taillight Harness

P&P Harness

$174.99
Radar Detector Harness for Cobra Radar Detector
Radar Detector Harness for Cobra Radar Detector

P&P Harness

$84.99
19-23 Silverado/Sierra Dash Cam Harness
19-23 Silverado/Sierra Dash Cam Harness

P&P Harness

$105.99
2019-2023 Sierra New Body Foglight Harness(Adding Fog Lights)
2019-2023 Sierra New Body Foglight Harness(Adding Fog Lights)

P&P Harness

From $166.99
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19-23 Speaker Wire Breakout Harness
19-23 Speaker Wire Breakout Harness

P&P Harness

From $179.99
2019-2023 Full Size Truck Flashing 3rd Brake Light Harness
2019-2023 Full Size Truck Flashing 3rd Brake Light Harness

$63.99
19-23 Sierra Fog Light Always On Harness
19-23 Sierra Fog Light Always On Harness

P&P Harness

$131.99
19-23 Sierra Fog Light High Beam Override Harness
19-23 Sierra Fog Light High Beam Override Harness

P&P Harness

From $131.99
19-21 Sierra LED Front Turn Signal Load Harness
19-21 Sierra LED Front Turn Signal Load Harness

P&P Harness

$117.99
2014-2021 Cobra Model Radar Detector Harness for Manual Dimming Mirrors
2014-2021 Cobra Model Radar Detector Harness for Manual Dimming Mirrors

P&P Harness

$42.99
GM Full Size Hot Start Ground Harness Engine to Body
GM Full Size Hot Start Ground Harness Engine to Body

P&P Harness

$49.99
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Duramax (L5P) Injector Connector - 19368140
Duramax (L5P) Injector Connector - 19368140

P&P Harness

From $39.99 $125.99
19-21 Sierra 1500 DRL Override Harness
19-21 Sierra 1500 DRL Override Harness

P&P Harness

$119.99
19-21 GMC 1500 to 22-25 1500 Headlight Harness
19-21 GMC 1500 to 22-25 1500 Headlight Harness

P&P Harness

From $172.99