2017-2019螺栓EV型号的前座椅靠背盖板可能会在上层盖板和侧面气囊之间脱离。已释放更新的座椅盖板设计以解决此条件。新设计采用额外的J-HOOKS，可靠地防止侧面气囊装饰，以减小间隙。（图。1）
图。1
拆卸和安装前座椅靠背的程序是广泛的，实现适当的拟合需要注意细节。使用第二设计座椅封面盖的替换过程已更新服务信息。以下是执行程序时要记住的一些提示。
座椅靠背封面清除
Replacing the seatback cover requires removing the seat from the vehicle as well as removing the head restraint from the seat, the inner recliner finish cover, the seat recliner handle, the seat adjuster vertical actuator handle, and the seat outer finish cover.
To begin removing the front seatback cover, release the J-hook retainer at the outboard seatback side air bag using a flat-bladed tool or trim stick and remove the seatback upper support bolt. (Fig. 2)
图2
Next, disengage the seatback cover along the seatback upper support, side air bag, and the inboard side of the seatback using a trim stick to push in and release the seatback cover retainers. (Fig. 3) Also disengage the seatback cover at the bottom of the seatback latch finish cover. The seatback cover retainers are arrow retainers.
图3.
使用扁平叶片的工具推入并释放顶部的螺旋盖保持器。（图4）盖上盖子的顶部释放，重新定位侧面气囊周围的上支撑架并向上枢转。
图4.
向外拉完成覆盖,然后向上disengage the lower retainers and remove the finish cover from the seat frame. Remove and discard the seatback upper support.
Remove the two lower seat cover push-in retainers at the bottom of the seatback. They will be reused during installation of the new seatback cover.
Pull the seatback cover through to the front of the seat to clear the seat hinges. Next, pull the black spline retainer out of the seat frame around the entire edge of the frame and remove the arrow retainer from the channel in the middle of the seatback cover. (Fig. 5) Finally, remove the seatback cover from the seat frame.
图5.
安装新的座位封面
第二个设计座椅靠背盖附带在较低座位区域中的两个额外的J-HOOK。（图6，a）它还使用侧面气囊周围的j钩，围绕座椅盖板的边缘和底部的箭头保持器（图6，b），以及沿盖子的内边缘的黑色花键保持器。（图6，C）
图6.
通过在座椅靠背中间将座椅背板的中间部分对齐，开始安装新盖板。使用装饰杆将固定器置于通道中。（图7）
图7.
Work around the edge of the seatback cover to seat the black spline retainer into the channel.
将下座椅盖面料推到座椅的后部，并将推入固定器从原始座椅封面覆盖物固定到座椅框架中的下组孔中。（图8）
图8
安装新的座椅封面上支撑（图9），这将有助于将座椅靠背盖保持在气囊盖上。
图9.
提升上支撑件，然后向下推动座椅锁闩锁饰面，向内接合下部保持器。确保座椅靠背盖中的通道适合侧面气囊的装饰。
The seatback finish cover is secured to the frame at the lower part of the cover and at the top of the cover. (Fig. 10)
图。10.
Install the seatback cover bottom first, ensuring that both retainers are properly seated on the lower seat frame. Lower the upper support around the side air bag and positon the seatback cover to engage the seatback latch finish cover retainers at the top of the seatback. Reinstall the seatback finish panel bolt that secures the upper support. Tighten to specification, but use care not to overtighten.
接下来，折叠背面盖底部的箭头固定器，并将它们安装到座椅背面盖的下边缘的通道中。
Pull the seatback cover up into position. Use the head restraint posts to confirm the cover is centered on the seat. Flip the center arrow retainer on the seatback cover and push it into the channel. Engage the other retainers along the top and inboard side of the seatback latch finish cover. (Fig. 11) The retainers will make an audible click when engaged in the channel. Continue to secure the retainers along the side air bag.
图。11
要在外侧空气袋的边缘周围安装新的J-Hooks，请通过从工具末端缩短约40毫米的较薄，改变平坦的饰边杆。（图12）需要额外的间隙来正确安装新的J-Hooks。一定要仅将J-Hobs推到足够远的侧面空气袋的边缘周围。
图。12
将侧面气囊的座椅盖板下方的下j-hook固定。将J-HOOK折叠到织物中，以便缝合J-HOOK的缝合进入上部支撑的中间。这将允许J-HOOK捕捉到上支持的侧面。检查盖帽盖板是否有任何皱纹或间隙。
完成安装重新安装修剪件，调整处理和头枕。（图13）
图。13
要查看座椅盖板的视频，请查看2019年4月新兴问题研讨会，10219.04V，GM学习中心centeroflearning.com（我们。）。在加拿大，回顾2019年5月版TAC谈判。
– Thanks to Chuck Wieseckel
