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DFM and lifters question?

Jsd
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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.

dgstarr63 Enthusiast

dgstarr63

Posted
Posted

My 2021 Silverado 8 speed had the hard downshift to 1st. The dealer replaced the valve body and it has been perfect ever since. If you are still on the powertrain warranty, you should 9nsist on this fix

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