reasons for dbw throttle not working?
 

I have finally got my ls6 conversion cranked and idling perfect but now I have no throttle what so ever. It is like it is not even in the car. Checked all the wiring again but it is all connected. If the tps goes out will it make the gas pedal do nothing or just make the car run rough? Need some suggestions

it will put it in limp mode. are you able to retrieve codes?

have you had the PCM programmed?

Yes pcm is programmed

I was having a similar problem with my DBW -- after checking and double checking everything it ended up being the pedal itself, replaced it and everything worked.

Thanks I was wondering if the pedals or tach modules ever went bad. The pedal and module had been sitting in the weather for awhile when we got it.

First step is scanning, did it throw any DBW related codes? Start here

If you have access to the PIDs, check APP and TPS with key on engine off. Press the pedal down and see if they are changing.

New DBW pedals are $75 at JEGS --- I'd be ordering one.

As mentioned before, I would be checking for codes before buying and throwing parts at it.

What harness do you have (company done by)? I have seen plenty of GM and other companies harnesses have issues out of the box. The exception is Speartech as they test each harness on an engine.

Are all the parts from the same vehicle (pedal, TAC module, ECM)? Not all of these parts from different vehicles are compatible. Some are, but not all.

So check the codes and compatibility first.

Mike Norris

So will a tac module work with any same year and model car. Or does it need to be specific to car which it came from