r/GMT400
26k members
r/GMT400 is a subreddit with 26k members. The most common kinds of discussions are solution requests and advice requests, and the community frequently discusses transmission, engine, chevy, truck, and brakes, and they frequently recommend/review battery, tire recommendations, and pump.
Use this subreddit to post pictures of your GMT400 trucks, show us your mods, or ask for advice.
Popular Themes in r/GMT400
#1
Solution Requests
: "New Foam/Rubber Replacement Parts, Interior and Exterior"
5 posts
#2
Advice Requests
: "EGR delete for 97 Chevy c1500 worth it"
3 posts
#3
Pain & Anger
: "Turn signal madness"
1 post
Popular Topics in r/GMT400
#1
Transmission
: "Transmission doesn't seem to be shifting"
12 posts
#2
Engine
10 posts
#3
Chevy
10 posts
#4
Truck
: "Damn I love this Truck"
9 posts
#5
Brakes
7 posts
#6
Wiring
: "Point of No Return update: Wiring"
6 posts
#7
Help
6 posts
#8
Obs
6 posts
#9
Fuel
: "Fuel issue"
6 posts
#10
Paint
6 posts
Products Discussed in r/GMT400
Battery
12 reviews
#1
Optima
5.0★ from 4 reviews
#2
Walmart
4.0★ from 2 reviews
#3
NAPA
4.0★ from 1 review
Tire Recommendations
7 reviews
#1
BFG
5.0★ from 2 reviews
#2
Cooper
4.0★ from 1 review
#3
Firestone
5.0★ from 1 review
Pump
2 reviews
#1
EP381
5.0★ from 1 review
#2
Delphi
5.0★ from 1 review
Member Growth in r/GMT400
Yearly
+7k members(34.9%)
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About
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This page gives a focused view of r/GMT400, including current member size, discussion patterns, product reviews, and related communities to explore.
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Last updated: June 28, 2026