2014 and 2015 Silverado 1500 LTZ models equipped with the Z71 package have different grilles.

2014 seen here:

2015 seen here:


Also, High Country and Sierra Denali models received a body-colored painted shark fin for 2015.

2014:

2015:


2014:

2015:


GMC Sierra with All-Terrain option changed from chrome trim for the 2016 model, to black painted trim on the 2017 model. Also, for 2016 All-Terrain was an available option for both SLE and SLT trim, for 2017-2018 it became an SLT only option.

2016 All-Terrain Crew Cab SLT:

2017 All-Terrain Crew Cab SLT


Of note, 2016 All-Terrain SLE models had LED taillamps (like SLT and Denali) while all other SLE models had incandescent taillamps.


vs.

Another thing to note about the 2019 LD (and Sierra Limited) models is that they were all made in Canada, unlike the 2014-2018 Double Cab models, which were mostly built at GM's Fort Wayne, Indiana plant.

These trucks are fairly easy to spot, as they all have a badge that says LD in place of the trim level badge to the right of the tailgate. Sierra Limiteds are even easier to spot, as they have an additional badge right next to 'Sierra'.

Silverado LD is available in W/T, Custom and LT trim levels. Sierra Limited has Sierra (Base), Elevation and SLE trim levels.

2019 Chevrolet Silverado 2500 HD 4WD LTZ Z71 Crew Cab/Standard Box

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I spotted at the wild today (2019-5-29): 2019 Chevrolet Silverado 1500 LD LT

Only available Double Cab/Regular Box body/bed style for this year.

2018 Chevrolet Silverado 1500 WT 2WD Double Cab Standard/Box Special Ops Edition

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Yesterday (2018-6-2) I took my car in for a checkup. While I was waiting for them to take care of my request, I toured around the lot and found this:

2018 Chevrolet Silverado 2500HD LTZ Z71 4WD Crew Cab/Standard Box Midnight Edition

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2017 Chevrolet Silverado LTZ Z71 1500 Crew Cab/Short Box Redline Edition

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Wheel:

2018 Chevrolet Silverado 2500HD LT 4WD Crew Cab/Long Box

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Here is this pickup truck that I snapped last fall:

2018 Chevrolet Silverado 1500 Custom 2WD Double Cab/Standard Box

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Apparently, my car wants an attention here

2017 Chevrolet Silverado 1500 4WD Double Cab/Standard Box LT Z71 Rally 2 Edition

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You can see my own car likes to sneak up here