Nick_R_23

Hey guys, I'm hoping someone can point me in the right direction here. I've done a bit of research on this and I'm still confused.

I have an LQ4 engine, PCM, and harness from a 2007 Chevy Express 3500 cutaway van. Hoping to reuse this PCM and harness, have no issues sending the harness out to be modified.

I will be running a TBSS intake/DBW throttle body on this engine.

This will all be going into a '67 Camaro, and I'm trying to figure out what pedal will be compatible with my setup. Detroit Speed makes a pedal bracket for my Camaro, which uses a C6 Corvette pedal. I would love to use this setup if possible. Will the C6 pedal work with my PCM and TBSS throttle body?

Nick_R_23

Really, nobody knows?

My PCM number is 12602801
TAC module is 12590009
Throttle pedal is 15821777

I take it that I can't run a C6 pedal (Gen IV) with this Gen III engine. So will a C5 pedal work with this PCM and TAC? Or do I need a C5 TAC also? I know I will need to run an X-Link for the TBSS throttle body, but what combo do I need for the PCM/TAC/pedal to play nice with each other?

SS69LS1

iTrader: (108)

The newer DBW dont use a TAC. I have installed 2 swaps w/ E38 ecm and C6 pedal. Not familiar with those part #'s, but if you have a TAC module, Likely need to use a pedal designed for use with TAC. Can you make the van pedal work by fabbing a bracket? If the pedal arm is too long, shorten it to your liking. Are you reworking the van harness yourself or having a shop do it? If using a shop, consult with them on your parts, they should know what can be used together.

Nick_R_23

I can't make the van pedal work, it's the plastic style one and it has an awkward angle to it, and an odd throw. I'm not stuck on using the van harness, I just have it here. I will likely go with either a vendor harness, or I've been considering the possibility of using Holley's Terminator LS MPFI.

I'm wondering if the Terminator kit might be the way to cheat at this, as I can order their kit meant for a Gen III (24x), but it appears to have the plugs and programming to run either 6 or 8 pin throttle bodies (which it says supports my TBSS throttle body!), any style of injector, as well as the 6 pin flat connector pedal. They recommend the 10379038 pedal, which from my research is a Gen IV 2004-2011 Cadillac CTS pedal. From my limited research, it seems that the C6 pedal with interchange with this just fine. Is this my ticket?

Nick_R_23

So I've confirmed with Holley that their system will control my TBSS throttle body just fine, however I'm having a hard time getting an answer from them about the pedal. I keep seeing posts online that say things like "I *think* all Gen IV pedals are interchangeable" but I can't find anything concrete. It doesn't help that there's very limited info on the CTS pedal that Holley specifies.

Nick_R_23

I recieved a response back from Holley this morning. Their answer, while slightly vague, might be enough for what I need. The tech informed me that the engineers stated that as long as the pedal shares the same physical connector AND posts a successful TPS autoset, then there should be no issues with using that pedal. I guess the next step here would be to pull the wiring diagrams for both vehicles and compare pedal pin outs and hopefully they are the same.