GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 7 of 7
  1. #1

    Default Active Fuel Managment ?

    I just have a question on when and how the motor goes from a V8 to 4 cylinder? Does a light come on when it is engaged, or does it do it automatically without alerting the driver? I do not have the DIC display system. But I do have the V8 5.3L Texas Edition. No real emergency, just a concerned individual.
    2010 Texas Edition Silverado
    FlowMaster Super 40 Series
    Corpus Christi, TX

  2. #2
    Jr. Engineer hundojoe's Avatar
    Join Date
    Feb 2010
    Elk River, Minnesota


    It does it automatically, no light on the dash, you should never even know its switching between the 2 modes.
    1999 Silverado Regular Cab Short Box
    Black on Black, Line-X sprayed in bed liner
    5.3 with K&N CAI, Texas Speed 220/220 cam with 112 deg LSA
    Texas Speed computer Tune
    American Racing Headers with Cats
    4.11 gears front and back, with Eaton rear posi
    Flowmaster 40series true duals
    16X8 American Racing Nitros with 305/70/16 Goodyear MTR's
    285's in the pic

    If it ain't broke...........Give me a minute!

    Im not completely useless, I can be used as a bad example...

  3. #3


    If you don't have the DIC buttons, there is no alert to when it switches from V8 to V4. The DIC upgrade allows you to access more screens than the odometer stem does, and this is one of them. It will tell you what mode you are in, and the instantaneous MPG. It's a very easy upgrade if you decide to do it, just search DIC on this forum.

    Sorry, search Driver Information center instead,..I forgot the search won't accept 3 letters or less.
    Last edited by troutbug; 09-21-2010 at 08:50 AM.

    2008 Silverado 1500 LT 5.3L Crew Cab
    Desert Brown Metallic

    Century top, Yakima roof rack, 2.5" front lift, Readylift 3" rear blocks, Line-x bedliner, step bars, AVS vent visors, Weathertech floor liners, door sill guards, power tailgate lock, tailgate damper, KC light bar w/ PIAA 525s, rear mini-light bar, rear LED reverse/utility lights, dual batteries (Cole Hersee isolator), DIC upgrade, 20" GM wheels, Cooper Discoverer A/T3s, 26 gal. onboard air (twin Viair 480Cs), Nathan Airchime K3HA / Old cast 2nd Gen. P3 Horns, Graham White valve, bell

    Past Chevys: 1985 S-10, 1963 BelAir sedan

  4. #4


    Yeah you won't know. you can tell when it switches back into v8 mode if you are cruising then hit the gas you'll feel that delay then power.

    2006 Duramax LBZ
    Edge Evo
    4'' Diamond eye to 6'' tip
    16'' ion alloy, 33'' fierce attitudes
    Lots of work left to do!

  5. #5


    Thank ya'll so much....Really appreciate all the understandable responses...This site is so helpfull and very courteous when it comes to others. I guess I will just have to believe that the truck is driving correctly for me.

  6. #6


    Like the others said, if you're interested in upgrading a bit by purchasing the Driver Information Center module, you'll have access to that feature as well is some others. It makes for a very affordable, easy, and useful addition.

    Here's a link to some helpful information:

    Other than that, I agree with you completely on the helpfulness of this site. Definitely a forum that is worth sticking around for. Steve and the other moderators and administrators (as well as the users) do a great job here.

    P.S.- Thanks for your service, Texas Tuff!

  7. #7


    Before I got tires that hummed I could hear the difference in the motor when it went into 4cyl mode going down the highway. If you have an aftermarket exhaust that sound is very easy to detect.

    ________2013 4C Rated__________

Similar Threads

  1. Replies: 10
    Last: 01-24-2013, 05:21 PM
  2. active fuel managment
    By black03silverado in forum Performance & Fuel
    Replies: 43
    Last: 06-05-2011, 07:28 AM
  3. Active fuel management problems 2008 Chevy Silverado
    By hd2500407 in forum Performance & Fuel
    Replies: 0
    Last: 05-09-2009, 07:59 PM
  4. 09 Colorado fuel managment module
    By Trex in forum Chevy Colorado Forum (GMC Canyon)
    Replies: 0
    Last: 07-27-2008, 02:19 AM
  5. active fuel management
    By iouhc19 in forum Performance & Fuel
    Replies: 1
    Last: 12-01-2007, 01:33 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts