Squarebody Rust Repair Guide for Real Trucks
This squarebody rust repair guide shows how to inspect, cut, patch, and protect common rust areas so your Chevy truck stays solid longer.
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GMT400 Engine Options That Actually Make Sense
GMT400 engine options range from simple stock rebuilds to LS swaps. Here’s what fits your truck, your budget, and how you actually use it.
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GMT400 Maintenance Guide for Real-World Trucks
This GMT400 maintenance guide covers the common wear points, service intervals, and smart fixes that keep OBS Chevy and GMC trucks on the road.
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OBS / GMT400 4-Hi Mod: Keep Low Beams On With Highs
The 4-Hi mod keeps your OBS Chevy or GMC low beams on when you switch to high. Here's how to wire it correctly, what to verify first, and what to avoid.
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GMT800 Hot-Idle Low Oil Pressure: 5.3L and 6.0L Diagnosis and Pickup Tube O-Ring Guide
Low oil pressure at hot idle on a 4.8, 5.3 or 6.0 GMT800? Confirm it with a mechanical gauge before spending money — a full diagnosis covering the sender, sensor screen, pickup tube O-ring, oil pump and when to stop driving.
GMT800 Hot-Idle Low Oil Pressure: 5.3L and 6.0L Diagnosis and Pickup Tube O-Ring Guide Read Post »
How to Decode Squarebody VINs
Learn how to decode squarebody VINs to identify year, series, engine, assembly plant, and trim so you know exactly what truck you have.
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Squarebody vs OBS Chevy: Which Truck Fits You?
Squarebody vs OBS Chevy comes down to style, comfort, cost, and build goals. Here’s how the two GM truck icons really compare today.
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Auto repair shop near me? Read this first — Squarebody, GMT400/OBS, GMT800, GMT900
Find expert fixes for Chevy/GMC Squarebody, GMT400/OBS, GMT800, and GMT900 truck issues like 4L60E slipping and AFM lifter tick at FullSizeChevy.com forum.
Auto repair shop near me? Read this first — Squarebody, GMT400/OBS, GMT800, GMT900 Read Post »
Used LS3 For Your Squarebody, GMT400, GMT800, GMT900: What To Check Before You Buy
Before buying a used LS3 for Squarebody, GMT400/800/900 trucks, verify the 58x reluctor wheel, E38 ECM, correct oil pan, fitment, VIN authenticity, and request a compression test for a reliable swap.
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OBS Chevy Market Trends in 2026
OBS Chevy market trends in 2026 show rising demand, sharper price gaps, and smarter buys for truck guys chasing clean GMT400 builds.
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