I have a 2000 gmc z71 and am getting a p1122 p0332 and p0122. I replaced the tps and the light came back on saying it was still bad. Im thinkin I may have a break in my wires idk. What do yall think?

 

This code is saying that there is a low signal from the tps and the knock sensors i changed the tps so?

 

are bank two 02 sensors after the cat?

 

no. bank refers to a side of the engine, if you get an o2 sensor code it will be the bank (1 or 2) and then sensor (1 or 2). sensor one is the important one for each bank, it's upstream of the cats and provides important information to the PCM. sensor two is behind the cats and merely moniters that they are functioning. knock sensors are a common failure on gen 3 ls engines. replace them both while you're in there, you might spring for the new wire harness for them also, the plugs shattered on mine as soon as i pulled on them. clean out the holes good, install new sensors carefully, torque to 15 ft lbs (very important) then silicone the rubber covers back in place. make sure you clear the codes properly when you're done to ensure you don't have irrelevant DTC's haunting you.

 

First off you might want to start buy telling us what engine your truck was equipped with. What common and works on a V8 might be different on the V6 just so you know.

As you have found simply replacing parts will not fix your issue in this case. You need to understand the codes and what they are telling you.

P0332 Knock Sensor 1 Circuit Low Input (Bank 2)

Read more: OBD-II Trouble Code: P0332 Knock Sensor Circuit Low Input (Bank 2)

P0122 Throttle Position Sensor/Switch A Circuit Low Input

Read more: P0122 Throttle Position Sensor/Switch A Circuit Low Input - Check Engine Light Code

P1122 - Throttle Position Sensor Circuit Intermittent Low Voltage

Read more: OBD2 - OBDII Code P1122 - Throttle Position Sensor Circuit Intermittent Low Voltage | Engine-Codes.com

As far as the knock sensor code it is a fairly common issue and Gm has released a TSB about it. TSB #02-06-04-023A I would also recomend replacing the Intake gaskets while you are in there with the new revised ones. Also use an original sensor from a dealer. I got one from the parts store and it lasted 3 months. I have read were others have had the same issue.

https://www.performancetrucks.net/fo...ensors-398119/

https://www.performancetrucks.net/fo...ge-dtc-458166/

For your your other 2 codes it sounds like you may have a wiring issue. Possibly a broken wire within the harness. Also check for corrosion which can effect Voltages as well.