This week on the channel +889K views this week

GMC opens up its Sierra V8 after an endurance test

Micah visits GM's propulsion facility to examine engine wear, redesigned oil feeds and the calibration behind the truck's response.

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GMC Story of November 10, 2026Trari Newsroom

Why this story? The channel's weekly summary: what went up this week, what is drawing views now, and where the channel stands among similar channels.

Putting the Next-Gen Sierra V8 to the Test

Things we can learn from the video

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1:57Full-throttle dyno runs accelerate wear, while a tilting stand simulates steep angles and cornering forces.
3:47Micah and Ian Stahl use engine components to explain four-stroke combustion.
4:28Engineers inspect a dismantled 6.6L V8 after at least 2,000 hours of testing.
5:00Casey Morrison explains revised lubrication, including dual main feeds, a wider annulus and slotted main bearings.
6:26Brian Baibak demonstrates how calibration affects accelerator response, drive modes and exhaust sound on the road.

The engine comes apart. GMC's only new upload, "Putting the Next-Gen Sierra V8 to the Test", takes Micah from a sensor-covered test rig to a table of disassembled components after at least 2,000 hours of testing.

This is a GMC promotional engineering feature, but the workshop detail gives truck enthusiasts something more specific than a showroom walkaround. Kevin O'Neill explains full-throttle dynamometer runs and a stand that tilts the engine to simulate steep angles and cornering forces. Later, Casey Morrison walks through redesigned oil delivery, including dual main feeds and slotted main bearings.

The teardown is the useful center of the visit: engineers inspect wear and look for changes the design needs. Micah then joins calibrator Brian Baibak on the road, where the discussion shifts from surviving punishment to making accelerator response feel right in different driving modes.

The upload has drawn roughly 35,000 views. In the comments, viewers question how laboratory endurance translates into towing, cold starts and years of ownership; others focus on the lubrication changes or the engineers' experience with earlier small-block generations. The test hours have become a discussion point, not simply a reassuring headline.

Across GMC's library, "GMC Yukon Denali Ultimate" remains the largest source of daily views, well above the new engine feature. Subscribers were unchanged over the week, while daily viewing is running below its usual level. Even so, GMC recorded the second-largest weekly view gain among the nearby motoring channels shown here, with Edison Motors having the larger week. For GMC, the new material puts the attention squarely on what happens beneath the Sierra's hood.

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What viewers say

The way his eyes lit up when the engineer said he goes all the way back to the Gen 3 small block . Dude helped engineer the most legendary small block and one of the best engine lines ever on the planet .
@carltongray3302See it on YouTube
Really like the changes in the lub. system....
@1798iscomingbackSee it on YouTube
That's awesome!! Can't wait to see these on the road
@PureGarageSee it on YouTube

Public comments from the video's page on YouTube