Next-Gen 2027 Chevy Silverado Prototype Spied Testing

[steelerdude15]

In 2024, GM Authority exclusively brought you the first details about GM’s next-generation full-size half-ton pickup trucks – the Chevy Silverado 1500 and GMC Sierra 1500. Now, our spies have just caught the very first prototype of what we believe is the 2027 Chevy Silverado.

While the heavy camo on this truck makes it difficult to figure out whether this is a Chevy or GMC, we have our reasons to to call this a Silverado (and not a Sierra). In any event, what we see here is the Crew Cab, Short Box configuration. The upright front end features a set of placeholder (non-production) headlamps bookending a grille with at least four horizontal slats and a front-facing camera peeking out from behind the cutout in the camo. Note that the headlamps are mounted quite a bit lower within the front fascia than those on the current Silverado 1500...

 

Read More: https://gmauthority.com/blog/2025/03/next-gen-2027-chevy-silverado-prototype-spied-testing-photos/

 

*There are more photos available if you click on the link.

Edited March 4 by steelerdude15

[CamGTP]

I'm very curious about the new V8 engines they are coming out with. Nice to see some spy shots, that just means there will start to be more pictures floating around as we come to the end of winter and into more summer testing.

 

Kinda stinks that the majority of the truck will be the same. The cab and bed will be basically the same, just the front end, interior and engines will be all new.

[asilverblazer]

1 hour ago, CamGTP said:

Kinda stinks that the majority of the truck will be the same. The cab and bed will be basically the same, just the front end, interior and engines will be all new.

I'm sure cab and bed will get new sheet metal, what more would you want?

[Ryan Tierney]

no more dual usb port exhaust.........only took how long

[C/K Man]

Article says the basic platform (chassis) will be unchanged.  I guess that means for better or worse another generation of waxy goo covered frames.  It appears so in the pictures. 

 

If they get the fender lips tighter around the wheels with that shape as in the photos, the trucks will look a lot better.

 

I'll bet that truck is a GMC judging by the grille texture.

Edited March 4 by C/K Man

[newdude]

Well, the diesel lives *unless* those cooling inlets in the exhaust tips are on a gas truck which means we get gas particulate filters on the V8s.  You can see the cooling cuff/venturis on the pass. pipe that is visible where I circled in the picture below.  Same style that the 3.0 Duramax currently uses. 

 

Looks like all the sheet metal is new.  Rear bumper is similar in general appearance but its clearly different.  So lots of new on the existing or slightly modified T1 frame (T1-2 or T1.2).

 

 

 

Edited March 5 by newdude

[revrnd]

On 3/4/2025 at 6:37 PM, C/K Man said:

Article says the basic platform (chassis) will be unchanged.  I guess [b]that means for better or worse another generation of waxy goo covered frames.[/b]  It appears so in the pictures. 

 

If they get the fender lips tighter around the wheels with that shape as in the photos, the trucks will look a lot better.

 

I'll bet that truck is a GMC judging by the grille texture.

 

Looking forward to a unibody truck?

[64BAwagon]

On 3/4/2025 at 3:22 PM, CamGTP said:

I'm very curious about the new V8 engines they are coming out with. Nice to see some spy shots, that just means there will start to be more pictures floating around as we come to the end of winter and into more summer testing.

 

Kinda stinks that the majority of the truck will be the same. The cab and bed will be basically the same, just the front end, interior and engines will be all new.

The rumor is the 1500 lineup will be as follows. 

2.7L turbomax (new designation)

3.0 Baby Duramax (unchanged)

5.7L gas engine (no other details)

6.6L (unknown designation)

 

The 5.3 and the 6,2 are gone. 

The 5.7 and 6.6 will have all of the AFM/DFM garbage no one wants 

These trucks are already on the road doing validation. (obviously by the pic)

They will include an all new (to the trucks) electrical architecture. 

 

The 2027 HD's are going to be a mid cycle mechanical refresh only with very minor body changes (if any) maybe some trims adds or subtracts but mostly focused on the new 6.6 gas L8S and the new Duramax L6P 8.3L 

both with added emissions equipment including a large EGR for the gasser. 

 

I am waiting on the 2026HD to come available for order and hopefully will order a L5P

 

[revrnd]

Interesting that they are going back to a '350' engine. When the 5.3 came out I was puzzled as to the reduction in displacement.

[asilverblazer]

2 hours ago, 64BAwagon said:

The rumor is the 1500 lineup will be as follows. 

2.7L turbomax (new designation)

3.0 Baby Duramax (unchanged)

5.7L gas engine (no other details)

6.6L (unknown designation)

 

The 5.3 and the 6,2 are gone. 

The 5.7 and 6.6 will have all of the AFM/DFM garbage no one wants 

These trucks are already on the road doing validation. (obviously by the pic)

They will include an all new (to the trucks) electrical architecture. 

 

The 2027 HD's are going to be a mid cycle mechanical refresh only with very minor body changes (if any) maybe some trims adds or subtracts but mostly focused on the new 6.6 gas L8S and the new Duramax L6P 8.3L 

both with added emissions equipment including a large EGR for the gasser. 

 

I am waiting on the 2026HD to come available for order and hopefully will order a L5P

Interesting, I haven't heard any rumors or information about the displacement changes on the 5.3 and 6.2; along with nothing new about the 8.3 diesel.

 

I wonder if the 6.6 currently in the HDs will be moving down to the light duty, which would be odd because all the tuning and engineering done on that engine was not done for the light duty consumer.

[newdude]

2 hours ago, 64BAwagon said:

The rumor is the 1500 lineup will be as follows. 

2.7L turbomax (new designation)

3.0 Baby Duramax (unchanged)

5.7L gas engine (no other details)

6.6L (unknown designation)

 

The 5.3 and the 6,2 are gone. 

The 5.7 and 6.6 will have all of the AFM/DFM garbage no one wants 

These trucks are already on the road doing validation. (obviously by the pic)

They will include an all new (to the trucks) electrical architecture. 

 

The 2027 HD's are going to be a mid cycle mechanical refresh only with very minor body changes (if any) maybe some trims adds or subtracts but mostly focused on the new 6.6 gas L8S and the new Duramax L6P 8.3L 

both with added emissions equipment including a large EGR for the gasser. 

 

I am waiting on the 2026HD to come available for order and hopefully will order a L5P

 

 

 

Couple things.  Trucks are already on GM Global B/VIP.  Global B just came out in 2020, and hit trucks 2022.5.  And the new infotainments are already out starting 2024/2025.  So is this another all new platform?  Global A was around 2007-2020 or so, so I'd figure Global B has quite some time left.  

 

Displacement larger (if true) sounds like an emissions move.  Bigger to make more power up front but then also can be not run near its limits?

 

HD.  Not sure what to think there.  2024 was MCE already, I feel like its a bit more than another MCE for it for 2027.    

Edited March 17 by newdude

[64BAwagon]

I didnt get into the weeds on the platform since its so complex. My understanding was that it was a big change and I left it at that. Apparently there were some software issues that were troublesome and that was part of it. (this is on the 1500s only) 

Youre right on the money as far as displacement and emissions. Rumblings are that the 8.3 in the HD is a beast but in order to get it compliant it will be tuned very conservatively. That seems to be true across all truck powerplants. 

The HD is mostly a powertrain/emissions refresh with some other ancillary changes. The 8.3 requires some fitment changes body wise also. Those trucks are just now being hand built for validation.  

[C/K Man]

I would be willing to wager if a 6.6L is made available in the 1500's it would be an aluminum block engine similar to the current 6.2L, not an iron block derivitive of the L8T.

 

I wonder if the 8.3L Duramax would have some commercial applications beyond GM trucks.

Edited March 17 by C/K Man

[revrnd]

15 minutes ago, C/K Man said:

I would be willing to wager if a 6.6L is made available in the 1500's it would be an aluminum block engine similar to the current 6.2L, not an iron block derivitive of the L8T.

 

I wonder if the 8.3L Duramax would have some commercial applications beyond GM trucks.

 

What motors are in the trucks built thru the Navistar joint venture? Are they common on both brands or do the Navistar trucks use 'their' drivetrain?

[C/K Man]

Both the Chevy and International versions of the joint venture trucks use the current Duramax.