Starting Issue or Not?

[Gord Rule]

Hi everyone.

New user here.

I currently am running a 2015 Sierra 5.3 Crew Cab which i purchased used a couple years ago.

Odometer still under 200,00 kms.

I am noticing as time goes by that this unit seems to crank longer before starting.

I do live in Canada where the winter temps can be brutal at times but i think I actually started to notice this issue in the summer.

I have not taken it in anywhere yet for service.

Just wondering if maybe its something as simple as plugs,wires etc.?

Or possibly fuel pump issues.

Not sure if these models have outstanding issues in these areas.

Its still starting but just curious.

Any thoughts would be appreciated.