Quote:
Originally Posted by parsonsj
So, here's what I've learned last night/today. My E67 (GM PN 12636660) started life intended for 07-08 Hummers. I think it's true that 07-08 E67s are incompatible with OS's written for 09+ E67s.
Given that, it seems I'm stuck. Getting a later E67 and a newer OS (like from a ZR1) is beyond my current abilities, I think.
I have read that HPTuners has an OS patch to support PWM fans, but I can't seem to find any such animal.
Anyway, that's the situation as I see it. Am I wrong? Would it be doable to get GM's ZR1 tune working with my crate motor LS9 if I got a newer E67?
Paging Dave Mikels, paging Dave Mikels. Dave Mikels to the E67-challenged section, please!
thanks!
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So touching on the whole E67 GMPP ECM's being unable to run PWM fans, is this specific to that older version of the ECM? (12636660)
My ECU is GM PN 19354333, does anyone know if they made revisions to the software that now allows PWM control of the fans?