I have a 04' Chev, 6.0L. Engine light came on, fault code came up PO332. I'm afraid the KS's are under the intake. Is there any way to test the KS to see if it is bad, or is there another problem that is causing the working KS to send an error to the computer. What causes the 332 fault, is the KS bad or is it providing a reading from an engine knock? The O'Reilly computer I used said "KS 2" "Circuit low imput, Bank 2"

You have 2 faults here, the first is your engine code:

Three possible causes of the P0328 are:

1. Poor sensor contact with cylinder block
2. KS to ECM sense circuit: high resistance, open circuit, short circuit to high voltage
3. KS failure

as for the rear running light it would either be a bulb or connection, double check these conditions.

What engine ? 4.6 or 5.4 l Factory repair manual only show's one , under the intake manifold .
Knock Sensor (KS) - 4.6L and 5.4L Removal

1. Remove the intake manifold. For additional information, refer to Section 303-01B .

1. Remove the knock sensor (KS).
   1. Disconnect the electrical connector.
   1. Remove the nut and the KS.

Do you know what a knock sensor is ?
The knock sensor (KS) system enables the control module to control the ignition timing for the best possible performance while protecting the engine from potentially damaging levels of detonation. The control module uses the KS system to test for abnormal engine noise that may indicate detonation, also known as spark knock.
If the control module has determined that knock is present, it will retard the ignition timing to attempt to eliminate the knock. The control module will always try to work back to a zero compensation level, or no spark retard. An abnormal KS signal will stay outside of the noise channel or will not be present. KS diagnostics are calibrated to detect faults with the KS circuitry inside the control module, the KS wiring, or the KS voltage output. Some diagnostics are also calibrated to detect constant noise from an outside influence such as a loose/damaged component or excessive engine mechanical noise
Do you know what spark knock is or pinging ? EGR valve problem ! Is your oil pressure low ? do you have a gauge or a oil light ! If it where an oil pump problem the light would be lit ! Is your check engine light lit ? How many miles on the vehicle ? Timing chain an gears , jumped time !

P0660 DODGE Description

The Intake Manifold Tuning Valve (IMTV) system is monitored for failure during continuous, key ON engine OFF or key ON engine running self-test. The test fails when the signal on the monitor pin is more or less than an the expected calibrated range

Symptoms- Engine Light ON (or Service Engine Soon Warning Light) Possible Causes- IMTV signal circuit open, shorted to power or ground.
- Damaged IMTV actuator.
- Damaged ECM.
When is the code detected?Dual plane intake system-Control solenoid failure

CODE PO650 MALFUNCTION INDICATOR LAMP CIRCUIT MALFUNCTION CONDITIONS. POSSIBLE CAUSES MIL CONTROL CIRCUIT IS OPEN , SHORTED TO GROUND TO SYSTEM POWER,MIL CONTROL POWER CIRCUIT OPEN IN THE INSTRUMENT CLUSTER, MIL THE LAMP IS DAMAGED OR HAS FAILED,INSTRUMENT CLUSTER OR THE PCM HAS FAILED. CODE PO332 KNOCK SENSOR CIRCUIT LOW INPUT BANK 2 CONDITIONS, POSSIBLE CAUSE KNOCK SENSOR FAILED, CODE P1875 4WD LOW SWITCH CIRCUIT MALFUNCTION CONDITIONS FOR TRANSMISSIONS 4L60E 4L80E, POSSIBLE CAUSES 4WD SWITCH LOW SIGNAL CIRCUIT IS OPEN OR SHORTED TO GROUND, 4WD LOW SWITCH IS DAMAGED OR IT HAS FAILED,PCM HAS FAILED.

The knock sensors (KS) produce an AC signal when specific frequencies are detected. When the engine operates, the powertrain control module (PCM) learns a minimum and maximum frequency of noise of normal engine operation. The KS system monitors both knock sensors in order to determine if knock is present. If the KS system determines that excessive knock is present, the PCM retards the spark timing based on the signals from the KS system. The PCM then retards the timing until no knock is present. When the PCM detects a frequency that is less than or more than a defined range, DTC P0327 will set for a failure in KS 1 which is located on bank 1 on the drivers side of the engine or DTC P0332 will set for a failure in KS 2 which is located on bank 2 on the passenger side of the engine.
But, the problem doesnt have to be the sensor, it could be bad ignition coil, bad spark plugs, bad/no/too much Fuel.......

The most likely cause of your code is a bad rear knock sensor. You should check the knock sensor wiring harness for corrosion. But if that checks out the sensor will have to be replaced. The knock sensor is under the intake manifold, although it's not too difficult to remove. Both knock sensors should be replaced along with the wiring harness, just because of labor involved in gaining access to the sensors. You could try clearing the code, it may stay off for a long time.

This engine is made to run on 87 octane.Sometimes when using a higher octane can cause a check engine light or other driveability problems.If you don`t think it is your knock sensors then get some used ones at the salvage yard and try them.They are under the upper intake plenum.

Sounds like you have several problems. The P0332 sounds like you got your knock sensor wet and needs to be replaced. When you do make sure you replace the wire harness also and that you seal around both sensors. Also remove the back near fire wall foam under the intake mani to let the water that collects evap out.

04 chev 2500hd 6liter gives code p2135 replaced pedal pos. sensor still giving code only does when goes to high rpm when goes in passing gear volts drop and goes to reduced engine power