Below are links to forum How-To Guides for gen9 cars. If any member has a new How-To guide or a guide that has been missed just send a PM/message to me or another moderator and we can review and hopefully add it.
2016-2017 1.5T LFV oil and filter change (2018+ 1.5 LFV similar with different oil and filter specified):
www.chevymalibuforum.com
2016-2018 6-speed 6T40 MNH transmission fluid drain and fill (paired with 1.5T):
www.chevymalibuforum.com
2016-2018 6-speed 6T40 MNH transmission fluid level and condition check (paired with 1.5T):
www.chevymalibuforum.com
2016 2.0T 8-speed Aisin AWF8F45 transmission fluid drain and fill:
www.chevymalibuforum.com
2016+ Cracked 3rd brake light (CHMSL) repair
www.chevymalibuforum.com
2016+ Release rear seatback from inside cabin (to access and release trunk if necessary):
www.chevymalibuforum.com
LED Headlight Swap (HIDs work too!):
www.chevymalibuforum.com
Remove Rear headrests
www.chevymalibuforum.com
2016-2017 USB port upgrade or replacement for 7" MyLink or 8" Mylink:
www.chevymalibuforum.com
2016-2017 1.5T LFV oil and filter change (2018+ 1.5 LFV similar with different oil and filter specified):

How-To: 1.5T LFV Malibu oil change gen9 2016 2017 (2018+...
This is an informal guide for the DIYer that wants to learn but is a little unsure. It is not a professional guide, there might even be typos. If you disagree with something, don't use the guide or write your own. This user (me), the forum, staff, nor anyone else is responsible for failure to...
2016-2018 6-speed 6T40 MNH transmission fluid drain and fill (paired with 1.5T):

How-To: 6-speed 6T40 MNH transmission fluid drain and...
This is an informal guide for the DIYer that wants to learn but is a little unsure. It is not a professional guide, there might even be typos. If you disagree with something, don't use the guide or write your own. The author (me), the forum, forum staff, nor anyone else is responsible for...
2016-2018 6-speed 6T40 MNH transmission fluid level and condition check (paired with 1.5T):

How-To: 6-speed 6T40 transmission fluid level and...
This is an informal guide for the DIYer that wants to learn but is a little unsure. It is not a professional guide, there might even be typos. If you disagree with something, don't use the guide or write your own. This user (me), the forum, staff, nor anyone else is responsible for failure to...
2016 2.0T 8-speed Aisin AWF8F45 transmission fluid drain and fill:

How-To: Generation 9 2016 Chevy Malibu 2.0L LTG 8 speed...
Hi everyone, See attached document which describes the steps, tools, and materials needed to change the transmission fluid in the (2016 only) 8 speed transmission AF50-8 MRC. If anyone has any questions or feedback let me know. EDIT: I had one typo which has been corrected.
2016+ Cracked 3rd brake light (CHMSL) repair
How-To: Cracked 3rd brake light (CHMSL) repair
My 2016 LT got to experience a Center High Mounted Stop Lamp (CHMSL) crack around 130,000 miles. This is a fairly simple repair but I'll walk through it in detail. You can use pictures from the leaking CHMSL bulletin/program along the way. That bulletin removes the gaskets from a "good" CHMSL...
2016+ Release rear seatback from inside cabin (to access and release trunk if necessary):

How-To: Release rear seatback from inside cabin (to...
This is for the 2016-2021 Chevrolet Malibu. As of June 2022 there are a few owners in this discussion conforming it worked as well as a couple hundred satisfied youtube users. There are a few that didn't get it to work... On gen9 you can access the trunk via the button on the trunk lid or by...
LED Headlight Swap (HIDs work too!):

How-To: Gen9 LED Headlight Swap (HIDs work too!)
This post will be a how to on swapping the headlights in your gen9 Malibu. I have a 1LT with the 1.5L, so this may be different with a 2.0L. View the guide with this in mind. Preface The set of bulbs I purchased were 6000K, 8000 calculated lumen LEDs. They are fan cooled, with a "360 degree"...
Remove Rear headrests

How-To: Remove Rear headrests
Anyone know if it’s possible to remove the rear headrest? Sent from my iPhone using Tapatalk
2016-2017 USB port upgrade or replacement for 7" MyLink or 8" Mylink:
How-to: USB port upgrade for 7" MyLink or 8"...
My LT has the 7" MyLink and single USB port in the front, just like the LS. For those that haven't noticed the 7" MyLink source menu has USB1 and USB2, where USB2 is always grayed out. This is because USB ports hub in pairs and you only have one. That MyLink is begging for another port. While...