I have problem with my 2008 LY6. I have repinned a wire to pin 48. In HP tuners I have flashed it to "crank" and 15/15. Using resistors for a pull up signal around 1K and a switched 12volt wire I get nothing. I have tried with 3 tachometer different and nothing.

I have other problem that I donīt know if is relationship with Tach. My speed gauge(on HPTuners) show always 252 km/hr.

Specs TJ

Wrangler TJ
LY6-2008 (Out Silverado 2500HD)
T56 - Corvette 94
Adapter T56/D20 in house
Tranfer Case Dana 20
F44 front
F9 rear Detroit locker
33x12.50 Dunes Grappler

Regadrs
Raul

 

pics and videos

http://www.youtube.com/watch?v=qVZsbZSy5_A

NAF 2012 - TJ V8 en Tasa Grande - YouTube

 

I have still the problema with my tachĄĄ Some help please

 

try 3/3

 

Itīs Gen IV not Gen III

 

http://www.hptuners.com/forum/showthread.php?27691-tach-wire-on-pcm-09-gmc-sierra


According to this thread your settings should work considering you have the right resistor and its pinned properly and have it switched.

 

I did that and nothing

There are several people with the same problem on 07 + LY6

Raul