2014 Sierra Crew Cab z71 SLT 5.3L.
211,000 miles as of 6/6/22 (Purchased in Dec 2014 with 26K)
Mods:
*CarPlay/AA
*Denali dash cluster
*HUD
*remote tailgate lock
*158 degree trans thermostat installed within the last couple of months
*Fox suspension all around
*Cylinder deactivation delete with OBD2 plug in tuner around 200k miles
*K&N washable cabin filter
*LED hedlights.
Failures to date:
* All front seat heaters went out and have been replaced
* Broken exhaust manifold bolts around 94K, covered under powertrain warranty
* Condenser around 110K, I paid half and GM covered the rest.
* Factory battery blew a cell early on, replaced with AGM battery
* Some grounding issues early on that I took care of.
* Thermostat swapped out due to occasional high fan issue
Maintenance:
*Oil changes at around the 5% life mark with Mobil 1 oil and filter.
*Trans flushed every 80k and dropped the pan and filter change at 200k. (I'm dumb and never realized there was a trans filter to change. Now I do)
*Rear end fluid at 200k
*Plugs at 100k then plugs again and wires at 200k
*Brake pads at 100k
*A couple of batteries and many filters
I am very happy with and love my truck. I think I got luck after hearing some of you guys stories on here. It's been a fairly maintenance free truck.