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DFM and lifters question?

Jsd

By Jsd
in 2019-2025 Silverado & Sierra

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BamX31 Enthusiast

BamX31

Posted
Posted
On 10/21/2021 at 12:58 PM, Jsd said:

Someone above misunderstood me about mileage. I was getting 21 mpg and after the Range delete it went to 17 mpg. 

I too get between 16-17 mpg with the Range device in place

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newdude
newdude

If counting 2014-2021 model year, we've done 11 lifter jobs involving AFM/DFM lifters from Jan 1st 2021 to current.  One of those wasn't an AFM failure, 2018 NYS Police truck that had a non active cyl

newdude
newdude

2.4 Equinox/Terrain pistons and timing chains blow the lifters out of the water for us in terms of # done/failures.  I know those have all sorts of special policies on them and what not for oil consum

Amcguy1970
Amcguy1970

The failure rate is in the decimal of a percent, for the few you hear about on the forums with how many members are on here and all the millions that have been sold it is probably like 0.01%. People n

driver1965 Enthusiast

driver1965

Posted
Posted

I understand the concerns of rising fuel prices (paid $4.65 last night in Camarillo, CA). However, we purchased trucks, not 4-cylinder scooters to drive around. Trucks get worse mileage, period. My mileage dropped w/ the Range control, Pedal Commander, leveled, valence removed, Cold Air Intake, auto-stop bypassed, and 275/65r20 Falken Wildpeaks. All of this on a 5.3 v8. I had the same engine on my old '08 Yukon in which I sold to my mechanic after 178K. His wife now drives it. I would ask all who have the issues what type of driving are you doing/what are you hauling? However, I can still make Vegas on one (1) tank of gas. Enjoy your truck. Cheers.

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