r/gmcsierra↗
GMC Sierra
A community for all things related to GMC Sierra trucks.
60k subscribers495 posts / mo in Sep 2026 (incl. <1% by known bots)426 authors / mosince 2015
r/gmcsierra has 60k members (+32% over the last 12 months). It gets about 495 posts a month from 426 people. Top topics: GMC Trucks, Buying Advice and Diesel Trucks.
When to post on r/gmcsierra
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How r/gmcsierra has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/gmcsierra
Top topics
Share of the subreddit's posts
- GMC Trucks19%
- Buying Advice4.1%
- Diesel Trucks3.2%
- Transmission Issues3.1%
- TruckLovers2.3%
Brands people mention
Most-mentioned brands and sites, last 12 months
- GM Authority
- RealTruck
- Roughcountry
- AmericanTrucks
- etsy
Everything else about r/gmcsierra
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research