Engine lags on my 5.3

[My 4xHoe]

Why does my 5.3 in my 2024 Tahoe have an engine lag when I’m just driving between 40-50 mph, and it wants to drop below 1000 rpm’s?

 

[GMCnewbee]

Just guessing, but the transmission might be going to a higher gear at the altar of fuel economy.

 

[Joseph Garcia]

Have you put a quality bi-directional scanner on it to see if there are any existing trouble codes?

Also, with the scanner, you can observe in real time what may be happening when you hit that engine lag threshold.

 

[Marky Dissod]

... the transmission might be going to a higher gear at the altar of fuel economy.

TCM may also be discouraging/delaying/denying a downshift (or upshifting early) for similar reasons.

 

[2024 White Tahoe]

Why does my 5.3 in my 2024 Tahoe have an engine lag when I’m just driving between 40-50 mph, and it wants to drop below 1000 rpm’s?

Still covered by the 5-year / 60,000 mile (no deductible) power train warranty?

Take it to a Chevrolet dealer for diagnosis and potential repair?

 

[sohanrd]

Why does my 5.3 in my 2024 Tahoe have an engine lag when I’m just driving between 40-50 mph, and it wants to drop below 1000 rpm’s?

Put it on L9 see if there is a difference.

 

[blanchard7684]

Did this just start occuring?

 

[My 4xHoe]

Still covered by the 5-year / 60,000 mile (no deductible) power train warranty?

Take it to a Chevrolet dealer for diagnosis and potential repair?

Will do, this didn’t do this at first when I bought it. Started around 15k miles

 

[My 4xHoe]

Did this just start occuring?

Yeah, around 15k miles

 

[blanchard7684]

Can a more detailed description be offered?

Is this with heavy throttle input, moderate input? Or no throttle input?

 

[My 4xHoe]

Put it on L9 see if there is a difference.

When I put it in L9, there’s no issue, only when it’s in D, it’s like it’s in between gears and the rpms are at 1000 with no throttle response with the lag until you throttle hard