Disabling Systems After Pickup Box Removal

A customer may request the pickup box and rear bumper be removed on 2019-2020 Silverado 1500 and Sierra 1500 models to install an aftermarket bed or body. (Fig. 18) If the vehicle is equipped with Side Blind Zone Alert (RPO UKC) or Park Assist (RPO UD5, UD7), there will be several “Service System” messages displayed on the Driver Information Center due to the control modules and sensors being disconnected/missing after the box and bumper are removed.

Fig. 18

To disable the optional driver assistance features that are no longer operational after installing a service body, refer to the latest version of GM Upfitter Integration Bulletin #168 – Box Removal – with Side Blind Zone Alert (UKC) and Park Assist (UD5/UD7). The information can be found at www.gmupfitter.com. Select the Technical Bulletins tab and then click the “Show all bulletins” link.

The disable procedure requires contacting the Techline Customer Support Center to remove the affected systems.

The Side Blind Zone Alert system is disabled due to the absence of the modules that are mounted inside the bumper corner step insert. Relocation of the Park Assist sensors or the Side Blind Zone Alert modules is not supported by GM. These devices are only tested in their OEM locations and performance and accuracy is unknown if the sensors or modules are moved to another location.

– Thanks to Jim Will

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