Add V4 Mode Indicator?

[DrAfterShock]

I bought a 2010 Silverado 1500 Crew 4x4 LT, 5.3L. The dealer told me that all LT's had the DoD V4 mode, but I noticed that some LTs had a computer on the dashboard to show V4 mode real time, and others do not have that computer. The truck I went with did not have that computer so I don't know 1) when the truck is in V4 mode or 2) if I really have DoD on the truck?

 

If the DoD is standard on my truck, is there any way to tap into a wire in the harness and add an LED on the dash to indicate when V4 mode is in use and out? If I'm on the highway a lot I'd like to know when I'm cruising if it is actually being utilized or not.

[DrAfterShock]

Allright so a few more minutes on Google turned this up: http://gmt900.wrath.org/dic.htm

 

This looks like the cleanest/easiest way to get what I need, as long as I've got the DIC harness available.

[RyanbabZ71]

see post #2 here

 

http://www.gm-trucks.com/forums/index.php?showtopic=116715

[math_10silverado]

you shure got the DIC harness, all gmt900 got them

[SouthCo]

Yeah only the dic will show you if you have a dic and it's on the right view. your 2010 5.3 has the dod, but i thought lt's had the dic?

[RyanbabZ71]

not all of em

[Black4x4Z71]

I bought a 2010 Silverado 1500 Crew 4x4 LT, 5.3L. The dealer told me that all LT's had the DoD V4 mode, but I noticed that some LTs had a computer on the dashboard to show V4 mode real time, and others do not have that computer. The truck I went with did not have that computer so I don't know 1) when the truck is in V4 mode or 2) if I really have DoD on the truck?

 

If the DoD is standard on my truck, is there any way to tap into a wire in the harness and add an LED on the dash to indicate when V4 mode is in use and out? If I'm on the highway a lot I'd like to know when I'm cruising if it is actually being utilized or not.

 

Save your money. My 2011' Silverado does show when if kicks into V4 mode but it only goes into V4 mode when I am decelerating. I have never seen it go into V4 mode with the cruise controll engaged on the highway at any speed. What a big disapointment this was to see.

 

By contrast, my 2011 V6 Honda Accord will run in V4 ECO mode all day while I have the cruise controll set at 75mph! I'm convinced that Honda is years ahead of GM with veriable cylinder management.

[Superperv23]

I bought a 2010 Silverado 1500 Crew 4x4 LT, 5.3L. The dealer told me that all LT's had the DoD V4 mode, but I noticed that some LTs had a computer on the dashboard to show V4 mode real time, and others do not have that computer. The truck I went with did not have that computer so I don't know 1) when the truck is in V4 mode or 2) if I really have DoD on the truck?

 

If the DoD is standard on my truck, is there any way to tap into a wire in the harness and add an LED on the dash to indicate when V4 mode is in use and out? If I'm on the highway a lot I'd like to know when I'm cruising if it is actually being utilized or not.

 

Save your money. My 2011' Silverado does show when if kicks into V4 mode but it only goes into V4 mode when I am decelerating. I have never seen it go into V4 mode with the cruise controll engaged on the highway at any speed. What a big disapointment this was to see.

 

By contrast, my 2011 V6 Honda Accord will run in V4 ECO mode all day while I have the cruise controll set at 75mph! I'm convinced that Honda is years ahead of GM with veriable cylinder management.

 

 

Or, and this is just a wild guess, your honda accord doesn't weigh 5500lbs, have the aerodynamics of a brick, and run on big tires. Mine will stay in V4 on flat ground on the highway till about 50mph and then always goes into V4 when you are going down even a slight grade.

[RyanbabZ71]

The DIC has more functionality than just the V-8 to V-4 mode. Its a cheap and easy mod why not do it?

 

Superperv hit the nail on the head about going into V-4 mode.

[BigBlueLB756]

DrShock, this link tells the whole story and covers your truck, whether you want to replace your panel with a new one with the switch already installed, or just buy the switch, cut out the hole in your existing panel and snap it in yourself. Many GM parts outlets have the panel and switch available, so shop around for the best deal. Or get it from your local GM dealership, although it'll probably cost more. It's an easy 10 minute swap that most of us have done.

 

http://www.gm-trucks.com/forums/index.php?showtopic=63291

[Stevens03]

By contrast, my 2011 V6 Honda Accord will run in V4 ECO mode all day while I have the cruise controll set at 75mph! I'm convinced that Honda is years ahead of GM with veriable cylinder management.

 

Your talking about a 2000 lb V6 dropping to 4 cylinders... not a near 6000 lb V8 dropping to 4 cylinders. It hardly stands a chance. If that technology was in a Impala... you'd see the same benefit as the honda has You can't convince me for a second that Honda's tech is years ahead of GM. They might manage the tech better, but what they have, it's not better

[BigBlueLB756]

And when the mighty 5.3 liter GM V8 drops off into 4-cylinder operation, it's still using more displacement than a 2.4 liter honda 4-cylinder. And sounds better.

[redjewel2ss]

when you get the DIC panel, press the top button on the DIC panel to where you are viewing instantaneous MPGs on the odometer screen, it will tell you if it is in V8 or V4 mode.

 

FYI, i have seen mine drop to V4 mode while cruising on a flat road, but only below 64 mph, never above that. and on a declined road at any cruising speed depending on how steap it is.

[pm26]

Would someone care to add a "seamless transition" meter to their instrument panel? This way you will know when the 4 to 8 cylinder switching is no longer seamless, and you have something to complain about.

[Vortec-Z71]

One is for sale here:

http://www.gm-trucks.com/forums/index.php?showtopic=134677