No read out on drivers information center on 2012 captiva

https://www.google.com/search?q=2012+chevrolet+captiva+2.2+VCDi+diesel+cylinder+head+torque+specs

https://www.google.com/search?q=2012+chevrolet+captiva+2.2+VCDi+diesel+big+end+torque+specs

Not too much information on the 2.2 diesel. A service manual is the best idea.

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Videos and the part

https://www.google.com/search?q=2012+Chevrolet+Captiva+Sport.+neutral+safety+switch+location

All the fuses, Holden - Chevy, same thing

Fuse Box Diagram Chevrolet Captiva Sport (2012-2016)

https://fuse-box.info > chevrolet > chevrolet-captiva-20...

It is located under the instrument panel on the passenger's side, behind the cover on the central console. The location of the fuses in the passenger ...

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  Fuse Box Diagram Chevrolet

  https://fuse-box.info > Home > Chevrolet
  Fuse box diagram (location and assignment of electrical fuses and relays) for Chevrolet (Chevy) Avalanche (GMT900; 2007, 2008, 2009, 2010, 2011, 2012, ...

Videos here

https://www.google.com/search?q=change+the+back+3+spark+plugs+on+a+2012+chevrolet+captiva+sport

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If there I one it is in the underhood fuse and relay center, the chart of the box is on the underside of the lid.

try putting it in Neutral or Park and see if it still shakes. If it does, set the brake, open the hood, and look at the engine.
The only source ov vibration will be the engine. Look at the motor mounts. My guess is that something is loose or a bushing has failed.

You have to fix the problem. Once fixed you can clear it with a coder,scanner, or 50 key on and off.

go after relay , also check temp sensor

You may want to see if your ignition switch is under the recall chevy had for being faulty sounds like a bad switch

proable leaky injector