My CEL was never ON when the o2 sensors were off. So what was the change in this release. It is possible that my rear o2s are bad, though it seems strange that they were fine until I got the predator. It seems like a false code to me, but maybe shutting them off fouled them???

Like Mike Levy said ...

Same here. I'm completely stock. When I flashed back to stock in order to upgrade from r18 to r19/20 I started seeing it, along with codes starting with U, like U1101 or something like that. r20 wouldn't work (early 05) so I went back to r19. Codes p0138 and p0158 were on anytime the rear o2 heaters ...

Is there any way to get the CEL to shut off when you return the car to stock? Why is it on when it was never on before? I thought when you returned it to stock, everything was supposed to be normal...

-Shane

I can't seem to get rid of p0138 and p0158 with the new CROM. I updated to 9r01 hoping I could get the CEL to shut off. Previously as long as the rear 02 heater was on, so was my CEL.

I've tried clearing the codes and they won't go away. The only thing I can think of that I haven't tried is ...

I have the exact same problem. My build date is 03-2004. I got the dealer to reflash to the part number ending in "AI" but still no option.

I have the same problem. I just had the dealer update my TCM. Now I can adjust shift points/firmness, but I cannot see the autostick disable/enable anywhere.