P0716 & p0717

[Bedwards]

Hey guys. I have a 2001 Pontiac Grand Prix GT which has the SS M90 kit on it. Recently, I've noticed my car's RPM is strangely higher than normal from about 100 km/hr and up. Sometimes it's normal, and other times it runs close to 3000 RPM. There have also been a few times where my car won't shift into 4th gear and my RPM is even higher (3500 RPM). I'm guessing this is the 4th clutch shaft wearing down. I also got the codes P0716 and P0717 and I'm pretty sure this is related to the problem. Does anyone have any advice?

On a side note, can removing a rear 02 sensor cause a P0141 code? This code just recently appeared, even though my rear 02 has been gone for months.

[Mitchstrp]

check your tune

[Austins01GP]

Yeah both those codes are related to the transmission. Start by checking your wires running from your PCM to the transmission make sure they are connected properly

And yes the code would be throwen by no o2 but I have no idea why it took so long.

[matt5112]

sounds like you need a rebuild.

But didn't you already know that?

At the very least a new fourth hub and input sensor. That or check the wiring.

[Bedwards]

I'll reset my transmission tune back to stock and see if that helps. I've already looked at the wiring, and it looks fine, but I'll check it again. I'm hoping I don't have to rebuild it. I'm a broke ass student.

[Bedwards]

Hey guys. I just wanted to give an update on this. I took a look at the wires between the transmission 20 pin connector and the PCM and I noticed my CAI wore through some of wires connecting to the PCM. Turns out the ISS wire was shorting out on the metal fibers on my intake. I wrapped the damaged wires individually with electrical tape. My torque converter is locking up properly again, and my car has no issues shifting to 4th gear! If you have a P0716 or P0717 code, check those wires!