GMC Sierra 1500 guidesAC and heatingGMC Sierra 1500 AC Blowing Warm on the Driver's Side? Check This Condenser Bulletin Before You RechargeSome 2019-2021 Sierra 1500s built in Mexico have a condenser with a misplaced internal plate, so the AC runs weak even though it's full of refrigerant. Here's how to spot it, GM's fix, and what condensers cost.Transmission and clutchGMC Sierra 1500 8-Speed Shudder or Harsh Shifts? The Fluid Flush Fix GM Recommends (and What It Costs)That rumble-strip feeling at light throttle is a well-known 8-speed issue on 2015-2018 Sierra 1500s. GM's bulletin 18-NA-355 points to a fluid exchange first. Here's how to tell if it's you and what to pay. GMC Sierra 1500 at a glance TypeTruckCurrent generation2019-presentSold new in the USYes
