What is this?

[Keven]

The first pic is a box under the glove box im just wondering what it is and why does it says 1ton diesel since i got a 1/2 gas..

Second just seem like aftermarket chip? 2 wire going to one of the computer plug.. 4 pin on top as i show on 3rd pic.. and also on that other plug.. 4 pin on top as well.. on the last picture..

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[Keven]

Oh and forgot to mention there is 4 wire coming out of that small grey box shown on 2nd pic.. 2 like i said going to those connection on the picture but the 2 other one goes in the engine bay and i cant find them..

 

[skylark]

The one on top is the DRAC. It interprets the signal from the vehicle speed sensor and feeds that information to the ECM, speedo and cruise control.

 

[someotherguy]

...ans 2nd one is a diode module for the ABS brakes.

Richard

 

[Keven]

And any idea why he put a 1ton diesel one? They just fit on all model?

And he told me about a different diff in the back does it have something to do with this?

 

[someotherguy]

If you change axle ratio or tire size, you need to change the settings in the DRAC to keep the speedometer/odometer correct. The "simple" way is to use a compatible DRAC that is already set to what you need. It's also very easy to change one if you have basic soldering skills; the settings are done using a series of jumper wires inside that act as on/off switches. Many of us have soldered in a DIP switch so we can change them as we please. It's also easier that way to get it closest to accurate without trial and error of having to desolder/resolder the jumper wires as you try several settings.

Richard

 

[Keven]

Thank you very much!! And merry Christmas to all of you