DBW question

[jackyl9999]

I have a 2006 LQ4 that I am wanting to use a corvette pedal with one of Hartrods mounting plates.

I have a 2005 vette pedal, but have found out that it will only work with a Gen IV engine.


Has anyone used a 98-2004 vette pedal with a DBW setup?

[truckdude239]

I think its just a matter of geting the pin outs on the connector right

[boostedc10]

If you want to run the 98-04 Vette pedal you need to have the truck ECM, TB and TAC and be tuned accordingly. The only additional thing you will need to do is rewire the pedal connector to match the truck pinout to the TAC.

[BR3W CITY]

Originally Posted by boostedc10

If you want to run the 98-04 Vette pedal you need to have the truck ECM, TB and TAC and be tuned accordingly. The only additional thing you will need to do is rewire the pedal connector to match the truck pinout to the TAC.

Not really sure this holds true. Afaik, the 'Vettes used the Red/Blue ECM connectors and only interchange with 01-02 trucks. After that, trucks switched to Blue/Green w/ different pins. Not sure about the 05-06 'vette, but once you hit 07 everything drops the TAC module and TAC function becomes a process of the ECM.

[boostedc10]

Br3w i think you may have mis-understood my post. What I am saying is the ECM should be for the truck not a vette. The TAC and throttle body should also be for the truck if you are running the truck ecm. The 98-04 pedal is only an input to the TAC module but due to the way the sensors read on the Vette a few wires have to be swapped.

I am only talking about using the pedal assembly from the vette nothing more, so it has nothing to do with the ECM connector colors.

I am sure it works as I have done it in a past project of mine.

[dayj1]

Originally Posted by boostedc10

Br3w i think you may have mis-understood my post. What I am saying is the ECM should be for the truck not a vette. The TAC and throttle body should also be for the truck if you are running the truck ecm. The 98-04 pedal is only an input to the TAC module but due to the way the sensors read on the Vette a few wires have to be swapped.

I am only talking about using the pedal assembly from the vette nothing more, so it has nothing to do with the ECM connector colors.

I am sure it works as I have done it in a past project of mine.

That definitely works for the '01 and '02 DBW trucks with the red/blue PCM connectors and the all plastic TAC module.

But, the blue/green PCM and TAC module with a metal bracket from the '03-'07 trucks won't work with the 'vette pedal.

Unfortunately, I think the original poster was asking about an '06. So, it won't work.

[boostedc10]

Originally Posted by dayj1

That definitely works for the '01 and '02 DBW trucks with the red/blue PCM connectors and the all plastic TAC module.

But, the blue/green PCM and TAC module with a metal bracket from the '03-'07 trucks won't work with the 'vette pedal.

Unfortunately, I think the original poster was asking about an '06. So, it won't work.

Dayj1 I know for a fact the ECM, TB, and TAC i used was from a DBW 04 5.3L Silverado which has the Blue Green connector and the pedal was from an 02 Vette. I had no issue running it.

[boostedc10]

Dayj1 I did miss that the motor was an 06 which you are correct it has the newer TAC and 2 Apps pedal.

Unless the LQ4 was earlier then the rest of the truck line (which i dont believe it was) the tac and pedal change came in 2005.

This also explains why I was able to make the stuff from the 04 work.

In short Dayj1 is right and it will not work. Sorry for all the confusion.

[jackyl9999]

When you say blue/green connectors are you talking about the connectors that plug the harness into the ECM?


I believe mine are Blue/Red. I would have to check.


I was wanting to avoid using the pedal I have mainly for the way the vette pedal mounts and not having to rework my pedal. It is all plastic and from what I have heard can be difficult to make it look factory in these trucks.

[boostedc10]

Best bet is post the part number of the ecm and tac that you have. I have never seen a red/blue ecm in a truck past 03.

[jackyl9999]

I was wrong. The ECM plugs are blue and green.

TAC number is
tmd1-160k1
510-091777

[boostedc10]

Yup no Bueno on the vette pedal swap.

[jackyl9999]

I decided to mod my pedal that came with my engine/trans setup. Took about 2 hours. Turned out pretty good I think. I used my stock pedal linkage. I will post pics tomorrow in case someone else needs an idea.

I will have a vette pedal and Hartrod mount for sale soon if anyone is interested.

[jackyl9999]

Couple pics of what I was able to come up with using the DBW pedal that came with my engine / Trans combo.

[2wd73blazer]

I have a 04 lq9 out of a Escalade. Will the corvette pedal work? Im new to the ls stuff. What is the tac?

[boostedc10]

The TAC is the Throttle Actuator Control, it is a small black box that is wired to the ecm and stock pedal. The best bet is to post the p/n of the TAC you have. This will stop us from going in circles on whether or not it will work.

[2wd73blazer]

I didnt get the tac in the deal. I got the harness but its hacked up, ecm, complete motor, and trans. No pedal or tac. Live and learn. Hope its not a expensive lesson.

[BR3W CITY]

You already have the TB tho, right?

You can buy the pedal and tac together on ebay, just look for a matching pair from an 04 silverado/escalade/van.

[2wd73blazer]

I have the tb. I also bought the corvette pedal and bracket from Rob. If there is a way to make the corvette pedal work I would like to go that way. What would I have to change to make it work?

[BR3W CITY]

Originally Posted by 2wd73blazer

I have the tb. I also bought the corvette pedal and bracket from Rob. If there is a way to make the corvette pedal work I would like to go that way. What would I have to change to make it work?

read the first half of this thread your posting in
Sounds like boostedc10 has a truck setup from the similar year range running the vette pedal. You might take a look at his build or look at his "threads started by" to see what solution he came up with. (what year is your vette pedal from?)

[2wd73blazer]

Its the 05 and up corvette pedal.

[boostedc10]

Simple answer is it will not work. The connector on the 05 pedal is the newer style.

[2wd73blazer]

I found this posted on another site. Does this sound correct?

2005+ corvette pedal is out of the question....it is based on the Gen IV operating system & ECM, uses no TAC module at all. If you are running / keeping the truck throttle body from the 07 silverado, here is what you do.....

Use the '07 truck throttle body (assuming its a "old body style" gen III motor, by the post and pictures of the truck pedal)

Use a 2002-2007 truck TAC module

Use a 1997-2004 Vette Pedal.

The trick is, that you can interchange the Pedal between truck and vette.....but the TAC must match the Throttle Body. Secondly, the operating system of the computer must match the TAC and Throttle body also (i.e....truck throttle body & TAC = blue / green ECM, and appropriate tune based on truck file) OR . . . . ( Vette throttle body / TAC....red / blue computer, and appropriate VETTE program based computer) -04 vettes used a blue/green connector computer, they are the only exception, all other years up till then are red-blue

The only variable that I cant tell you for certian, is if the harness between the pedal and the TAC is the same for truck and vette. I know it will plug in with the same connectors, but i believe there is 2 wires that must be transposed when switching between vette and truck pedals with a truck TAC. Call Robert @ fuel injection connection (303) 641-6400, he will verifty this and help you out, nice guy!

Ive done this exact swap several times, took a little trial and error on my part the first time, but it is something that I know works and have done many times since.

ALSO . . . . . .(not done, sorry!) You cant use the later model PCM to "eliminate" the TAC module on your motor....it is a 24x reluctor and 1x cam sensor motor, and needs to be run with the corresponding 07 (old body style) and below computer. Gen III computers wont read Gen IV crank signals, and vice versa. The only exception to this is the LS2 GTO cars.....they use a Gen IV "tac-less" pedal and the Gen IV computer, but are a 24x motor, actually the ONLY 24x LS2 that was made. These are the only ECM's of the IV Gen cars that can read 24x, you could try this approach with the 06 vette pedal, if you like. Just remember that the Gen IV ECM's wont control automatic transmissions, they use a seperate computer with a jumper harness for that. I would just stick with the gen III truck computer, truck throttle body, truck TAC module, and a 97-04 Vette pedal, with the TAC module-pedal harness wired correctly.

[2wd73blazer]

My ecm has blue plugs but the chart says it should be warren type which is the same type as the Corvette. How do I know what I have? I already have to buy a harness so do I need a new ecm, pedal, tac, and tb. I dont want to throw good money after bad.

[boostedc10]

From what i know and what was discussed in this thread is that the truck tac module that is all plastic will work with the 1997-2004 vette pedal.

As stated by Dayj1 earlier in the thread the later tac which has an aluminum bracket will not work with the vette pedal.

From my side I can confirm that swapping the 2 pins at the vette pedal and using the all plastic tac it will work. I do not know and have not tried it with the aluminum bracket tac so I cannot speak to the validity of the post you found.