This argument never dies, because both trucks solve the same problem in completely different ways.
If you actually drive your truck every day — work, highway, winter, errands, towing, long trips — the differences start to matter fast.
OBS (1988–1998) — Simple, Mechanical, Honest
Why people daily them:
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Straightforward wiring and systems
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Easy roadside diagnosis
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Cheap parts everywhere
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Classic truck feel and visibility
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No BCM drama, minimal electronics
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Easier backyard repairs
An OBS feels like a truck. Steering is loose compared to modern standards, interiors are basic, and you hear and feel everything. That’s either the appeal or the downside depending on what you want.
Daily driver reality:
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Interior noise is higher
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HVAC and sealing show their age
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Fuel economy usually worse
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Safety and crash protection behind newer platforms
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Long commutes expose comfort limits
Best fit: short-to-medium commutes, guys who wrench their own stuff, people who value simplicity over refinement.
GMT800 (1999–2006) — Modern Enough Without Being Complicated
Why people daily them:
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LS-based drivetrains are extremely reliable
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Better ride quality and highway stability
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Strong HVAC and insulation
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More comfortable seating and ergonomics
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Better braking and overall safety feel
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Still relatively easy to work on
GMT800 sits in the sweet spot. Modern drivability without the heavy electronic dependency that came later.
Daily driver reality:
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Electronics start to exist (BCM, clusters, modules)
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Interior plastics age poorly
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Front end parts wear faster if neglected
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Slightly more diagnostic work vs OBS
Best fit: long commutes, highway driving, year-round use, people wanting reliability plus comfort.
What’s your take on GMT400 vs GMT800? Which one do you prefer and why?