Sierra MultiPro Tailgate

The innovative MultiPro tailgate available on the 2019 Sierra (Fig. 16) offers flexibility and functionality designed to improve loading, unloading and access to the cargo box. It features a primary gate and inner gate, both of which are released using the buttons on the tailgate. The primary gate also can be released remotely using the key fob or the button on the center of the instrument panel. The tailgate is not power operated.


Fig. 16


The tailgate has six functional positions.

Primary Gate – Open the primary gate for access to the cargo box. (Fig. 17)


Fig. 17


Primary Gate Load Stop – With the primary gate open, the load stop helps keep longer items secure in the cargo box. (Fig. 18)


Fig. 18


Easy Access – The inner gate folds down for easier reach into the cargo box to access items near the cab. (Fig. 19)


Fig. 19


Full-width Step – With the primary gate open, the inner gate folds into a sturdy step (up to 375 lbs., 170 kg) with a conve­nient handle for easy cargo box entry and exit. (Fig. 20)


Fig. 20


Inner Gate Load Stop – With the primary gate closed, fold the inner gate for two-tier storage and open the load stop to help keep longer items secure. (Fig. 21)


Fig. 21


Inner Gate Work Surface – With the primary gate closed, fold the inner gate for two-tier storage or for use as a standing-height work surface. (Fig. 22)


Fig. 22


Here’s a look at the different positions of the tailgate. (Fig. 23)

Fig 23

Opening the Gates

There are two release buttons on the tailgate. To open the primary gate, press the lower button. Press the upper button to release only the inner gate. (Fig. 24) To open the primary gate and the inner gate at the same time, press the lower button and then the upper button consecutively.


Fig. 24


Press the release bar on the inside of the tailgate (Fig. 240 to open the load stop or lower the step.


Fig. 25


Trucks Equipped with a Hitch Ball

Do not lower the inner gate with the primary gate open (easy access or step positions) if a hitch ball or trailer is attached. This may damage the tailgate due to the amount of clearance between the hitch receiver and the lowered inner gate. (Fig. 26)


Fig. 26


Tailgate Operation

When the BCM receives a release command to release the primary tailgate or inner (auxiliary) gate, it applies a brief pulse of voltage to the appropriate left and right pickup box latch relay control circuits, which energizes the coil side of the relays. The switch side of the appropriate left and right latch relay then momentarily closes, supplying a brief pulse of battery positive voltage to the left and right pickup box primary tailgate or auxiliary endgate latches. (Fig. 27) The latches activate to release the gate.


Fig. 27


The inner auxiliary pickup box endgate must be in the latched position before commanding the primary tailgate to release. The BCM disables the primary tailgate release function if the inner auxiliary pickup box endgate is open or ajar.


– Thanks to Dave MacGillis and Sherman Dixon

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