1947–1972
Restoration, drivetrain, preservation.
Featured: Rust Repair
From the forum · Rust Repair
Rust Repair on Classic Chevy Trucks: Where to Start
Read the thread →Chevy · GMC · Cadillac full-size trucks & SUVs Find Your Truck.
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Fix It Right.
From Squarebody to T1XX, find generation-specific guides, known problems, real repairs, and build discussions from full-size GM truck owners.
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Find Your Truck
Every generation has its own hub — buying guides, the problems these trucks are actually known for, and fixes that hold up. Each card links to the hub, plus a real forum thread to jump straight into.
1973–1987
Restos, swaps, brotherhood.
Featured: C/K ID Guide
From the forum · Buyer Guide
Squarebody C/K ID Guide: Years, Trims & Build Codes
Read the thread →1988–1998
The trucks that built the culture.
Featured: Interior LED Upgrade
From the forum · Interior Upgrade
OBS Interior LED Upgrade (1995–1998)
Read the thread →1999–2006
5.3 & 6.0, oil pressure, mods.
Featured: Cabin Air Retrofit
From the forum · Common Upgrade
GMT800 ’03–’06 Cabin Air Filter Retrofit
Read the thread →2007–2013
AFM, oil use, real-world builds.
Featured: Tailgate Assist
From the forum · How-To
GMT900 Tailgate Assist Install (2007–2013)
Read the thread →2014–2018
Modern truck tech & tuning.
Featured: Tailgate Assist
From the forum · How-To
K2XX Tailgate Assist Install (2014–2018)
Read the thread →2019–now
Latest Silverado & Sierra.
Featured: 10-Speed Shudder Fix
From the forum · Diagnostic
10-Speed Shudder on T1XX — How to Fix It
Read the thread →All platforms
The complete swap guide + checklist.
Featured: LS Swap Guide
From the forum · LS Swap
LS Swap into a Full-Size Chevy / GMC — Complete Guide
Read the thread →The primary reason to be here
Get Help From Owners Who’ve Done It
Post a question, document your build, share a repair, or help another GM truck owner. Registration is free.
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From the forum right now
Latest Forum Activity
GMT900 Active
GM 5.3L Oil Consumption Issues (2007–2013): What You Need to Know
K2XX Active
2018 Silverado AFM/DOD Delete
GMT800 New
2000 K2500 Chevy CC Dash Question
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The most-read repairs, upgrades, diagnostics and buyer info across the FSC forum — refreshed automatically.
Common Repair
GMT800 Instrument Cluster Repair
Stepper motors, backlight bulbs and dead gauges — what to fix before you throw a whole cluster at it.
Common Repair · GMT800
Read the Thread →
Interior Upgrade
OBS Interior LED Upgrade
Convert the factory HVAC, cluster and interior lighting to LED on a 1995–1998 OBS, bulb sizes included.
Interior Upgrade · OBS / GMT400
Read the Thread →
Engine Diagnostic
5.3L Oil Consumption: What to Check
Why AFM 5.3 engines burn oil, how to confirm it, and the fixes owners actually use before a teardown.
Engine · GMT900 / AFM 5.3
Read the Thread →
Transmission
10-Speed Shudder on T1XX
The torque-converter shudder on the 10-speed, how to tell it apart from driveline vibration, and the fix.
Transmission · T1XX
Read the Thread →
LS Swap
LS Swap into a Full-Size Chevy / GMC
The updated overview of swapping an LS into a full-size GM truck — mounts, wiring, cooling and drivetrain.
LS Swap · All Platforms
Read the Thread →
Buyer Guide
Squarebody C/K ID Guide
Decode years, trims and build codes on 1973–1987 C/K trucks before you buy or start a project.
Buyer Guide · Squarebody
Read the Thread →
Backed by real trucks 
Guides and Real Builds
Technical information from FSC, backed by trucks and repairs documented in the community.
Featured Technical Guides
Engine
5.3 Oil Consumption: Why It Burns Oil & How to Fix It
Known Problem · GMT900 / AFM 5.3
Common Repair
Blend Door Actuator: Clicking Dash Fix & Relearn
HVAC · GMT800 / GMT900
Electrical
How to Find a Parasitic Battery Draw
Diagnostic · GMT400 – K2XX
LS Swap
The Complete LS Swap Checklist
Powertrain · All platforms
From Members’ Garages
2002 Avalanche 2500 8.1L
An 8.1 Vortec / 4L80E tow rig — lift, wheels, cluster upgrade, double DIN and a bed drawer build.
Build thread · GMT800
The FSC Yukon Project (FSC1)
The community-build 1997 OBS Yukon: mechanical refresh, interior LEDs and an Escalade console swap.
Community build · OBS / GMT400
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Community thread · Add yours
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Current FSC projects
The FSC Yukon Project
Follow the OBS Yukon build, see the work as it progresses, and learn how the FullSizeChevy community is involved. It is a community build first, a giveaway second.
- Full mechanical inspection and refresh completed
- Interior LEDs, seat recovery and OBS Escalade console swap done
- New headlights, billet grille, exhaust and detailing done
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