CrossFire/'7747/700R4/4th Gear confusion!

[Louis Baiani]

Hey Ken,

I have two bins for that vehicle, one causing a TCC lockup at very low speeds
(original), and a replacement from GM.  What are you using to change your
values?  Do you have a table indicating what is what on the bin?

Thanks,

Louis

Ken Kelly wrote:

> Okay, I hooked my tattle-tale box up and figured out that I wasn't getting a
> 4th gear signal from my transmission. At first I suspected the tranny, but
> once I found some other schematics, I realized that I just had it pinned
> wrong, so I switched it over to where it *should* be (W22) and now I'm
> getting a light while in the first three gears. In 4th gear, the light goes
> off (telling me that it's a normally closed switch.) This isn't a problem,
> but in TunerCat, I've got my TCC set to lockup at 45 and unlock at 40 when
> in 3rd gear, and lockup at 50 and unlock at 45 in 4th gear. Apparently
> either the PROM I have is backwards, or TunerCat has it backwards, because
> in 3rd gear, it won't lockup until 50 (a little too high) yet 4th gear locks
> up at 45. So my question is - should I find a different BIN to work with, or
> should I put a relay in the pigtail harness that inverts the output from the
> transmission? (I really don't want to dig into the transmission to swap to a
> normally open switch!)
>
> "The Third" Ken Kelly
>
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