5.3 w/ 10 speed mpg

Z71RAD88 · August 15, 2020

Curious to know what you guys are seeing in town and highway with the 5.3 10 spd setup. 4x4s and 2WDs.

loud_pipes · August 16, 2020

2020 AT4, 5.3/10, 4” lift, 33x12.5 wheels, sport mode 100% of the time. 17 mpg blended city/highway and heavy on the accelerator.

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Z71RAD88 · August 16, 2020

11 hours ago, loud_pipes said:

2020 AT4, 5.3/10, 4” lift, 33x12.5 wheels, sport mode 100% of the time. 17 mpg blended city/highway and heavy on the accelerator.

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Do you recall what you were getting prior to lift and tires? I realize AT4 comes from the factory with the 2” and 32s.

Grall · August 16, 2020

20 TB

16-17 city

19.5-20.5 70-75 mph highway

23-26 mpg under 60 mph easy highway

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loud_pipes · August 16, 2020

Do you recall what you were getting prior to lift and tires? I realize AT4 comes from the factory with the 2” and 32s.

IIRC, The best I got was an average of 19mpg over 400 miles, blended highway/city driving.

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Rodek · August 18, 2020

I'm getting 19 in town and 22-23 on the highway.

Jay Curlin · August 19, 2020

I get 19.5 to 20 highway (70-80mph)......15 city. I only buy Top Tier gas (87 octane)

Unknown_eyes · August 19, 2020

I'm getting 22 mpg average with mixed driving. 2020 Sierra 5.3, 10 speed, 4x4, 20" all season tires. Stock truck.

Z71RAD88 · August 20, 2020

On 8/19/2020 at 7:56 AM, Unknown_eyes said:

I'm getting 22 mpg average with mixed driving. 2020 Sierra 5.3, 10 speed, 4x4, 20" all season tires. Stock truck.

22 average. That's really good.