by Bullet Bob » Fri Aug 28, 2020 9:05 pm
I'm about to start reassembly of the 4R70W and I have a question about necessary electronic parts. I have the 1-3 ohm TCC but I seem to recall reading somewhere that it's necessary to also change the EPC solenoid when using a late trans ('03) with the CBAZA ECM. I've been going through my mountain of swap and tuning info but can't seem to find it. So is it true? Do I need to change the EPC to one that will be happy with the EEC-IV?