V8 & V4 .. showing on DIC

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Someone

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Why does sometimes it shows V4 and sometime V8 on the DIC. (see pics)

[I have recently bought 2015 Tahoe LS 2x4 without user manual]TAHOE1.jpg TAHOE2.jpg
 

PG01

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DOD displacement on demand, AFM Active fuel mgmt, shuts of 4 cylinders to give you better gas mileage........hahahahahahahahahahahahaha.....do a search on here for AFM or google.......lolololololololol
 

Glocksub

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DOD displacement on demand, AFM Active fuel mgmt, shuts of 4 cylinders to give you better gas mileage........hahahahahahahahahahahahaha.....do a search on here for AFM or google.......lolololololololol

Exactly. My advice is to disable it using a range device, superchips or diablo programmer. It will drive better without it and most report that the change in fuel mileage (if any) is well worth the improved drive ability.
 

jeffbco

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Obviously his selling dealer didn't explain the "benefits" of AFM or he didn't get an owner's manual.

Active Fuel Management®

Vehicles with V8 engines may have

Active Fuel Management. This

system allows the engine to operate

on either all or half of its cylinders,

depending on the driving conditions.

When less power is required, such

as cruising at a constant vehicle

speed, the system will operate in

the half cylinder mode, allowing the

vehicle to achieve better fuel

economy. When greater power

demands are required, such as

accelerating from a stop, passing,

or merging onto a freeway, the

system will maintain full-cylinder

operation.

If the vehicle has an Active Fuel

Management indicator, see Driver

Information Center (DIC) 0 152 for

more information on using this

display
 

sumo

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On paper it's a great idea. Real world use is doesn't work. Sure if you let off the gas or coasting downhill will show all day long. Touch the gas pedal, back into v8 mode
 

Z15

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Its a more fuel saving device for GM CAFE then for the customer. Its things like this, 8 & 10 speed trans or a V6 like Furd.
 
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