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Where is the PCM located on a 2004 GMC SLT 4.2L?

I need to check the wires from the PCM to the crankshaft position sensor for broken, loose or corroded the engine will turn over but want start.

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Posted on Dec 07, 2016

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1 Answer

How do i use a digital-830B multimeter?


set the meter mode to the ohms sign ( omega sign) set the scale to position the decimal point if the resistance is to large for the standard setting
to know what you are reading you will need to get the numbers from a workshop manual so that you can compare what you have to what it should be
it the sensor is working you should get a reading but if it goes straight all 000000 then there is a dead short or if it reads what you have when you switch the meter on it will be an open circuit --broken wire --
the test procedure is in the workshop manual

Dec 16, 2016 | GMC Cars & Trucks

1 Answer

How do i check for resistance on a 2 wire crankshaft position sensor and a 3 wire cam sensor with a digital multimeter?


If you have a meter, select the amps reading and place each lead to each terminal. if you have a reading, its good, if you do not (open circuit), sensor bad.

Dec 16, 2016 | GMC Cars & Trucks

3 Answers

How does the crankshaft position sensor operate what is it Job to do? and how do i test the injectors for pulsa with a noid light where are the injectors located on this vehicle?


The crank sensor is needed for the coils to fire. It is on the drivers side, mounted in the engine block back by the transmission. The injectors are under the plenum. The plenum wraps around them. I wouldn't worry about them right now. And your probably right about being flooded. I would throw new plugs in it when you replace the sensor.

Dec 11, 2016 | 2004 GMC Envoy SLT

1 Answer

Do a 2004 Envoy SLT 4.2L have a Ignition Module?


Crankshaft position sensor,cam sensor . your vehicle should have coil on plug , a coil at each spark plug !
Ignition Coils
Each ignition coil has an ignition 1 feed and a ground. The PCM supplies an ignition control (IC) circuit. Each ignition coil contains a solid state driver module as its primary element. The powertrain control module (PCM) signals the coil driver to initiate a firing event by applying a signal to the IC circuit at the appropriate time. When the signal is removed, the coil fires the spark plug. The spark plugs are tipped with platinum for long wear and higher efficiency.
During normal operation the powertrain control module (PCM) controls all ignition functions. If either the crankshaft position (CKP) or camshaft position (CMP) sensor signal is lost, the engine will continue to run because the PCM will default to a limp home mode using the remaining sensor input. As mentioned above, each coil is internally protected against damage from excessive voltage. If one or more coils were to fail in this manner, a misfiring condition would result. Diagnostic trouble codes are available to accurately diagnose the ignition system with a scan tool.
If a crank sensor is replaced a Crankshaft Position System Variation Learn must be done and a scan tool is need to do this.

Nov 30, 2016 | 2004 GMC Envoy SLT

1 Answer

2000 gmc jimmy need to know where the crankshaft sensor is located as im told that is the most likely culprit. its a 4.3 vortec 4x4 slt model if that helps.


Hello jerryparker6,
The image below shows the location of the crank position sensor.

I hope this helps.

netvan_87.png

Regards,
netvan

Apr 11, 2011 | GMC Jimmy Cars & Trucks

1 Answer

2003 sebring 2.4l ck engin light on code po340 can you help


P0340 - Camshaft Position Sensor Circuit Malfunction

This indicates that a problem was detected in the camshaft position sensor circuit. Since it says circuit, that means the problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM. Don't just replace the CPS (camshaft position sensor) and think that will definitely fix it.

Symptoms can include:
* Hard starting or no start
* Rough running / misfiring
* Loss of engine power

Causes: A code P0340 could mean one or more of the following has happened:
* a wire or connector in the circuit could be grounded/shorted/broken
* the camshaft position sensor may have failed
* the PCM may have failed
* there exists an open circuit
* the crankshaft position sensor may have failed

Possible Solutions: With a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
* Visually inspect all the wiring and connectors in the circuit
* Check for continuity in the circuit wiring
* Check the operation (voltage) of the camshaft position sensor
* Replace the camshaft position sensor as required
* Check the crankshaft position circuit as well
* Replace circuit wiring and/or connectors as required
* Diagnose/replace the PCM as required


Test it and keep us updated.

Mar 11, 2011 | 2004 Chrysler Sebring

1 Answer

My 2004 dodge neon sxt is giving me a p0340 code how do i fix this


A code P0340 could mean one or more of the following has happened:

  • a wire or connector in the circuit could be grounded/shorted/broken
  • the camshaft position sensor may have failed
  • the PCM may have failed
  • there exists an open circuit
  • the crankshaft position sensor may have failed

With a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:

  • Visually inspect all the wiring and connectors in the circuit
  • Check for continuity in the circuit wiring
  • Check the operation (voltage) of the camshaft position sensor
  • Replace the camshaft position sensor as required
  • Check the crankshaft position circuit as well
  • Replace circuit wiring and/or connectors as required
  • Diagnose/replace the PCM as required

Hope this is for any assistance.

Dec 13, 2009 | 2004 Dodge Neon

1 Answer

Code p0340 need location on 2004 sebring 2.7 v6



P0340 OBD-II Trouble Code
Technical Description
Camshaft Position Sensor Circuit Malfunction


What does that mean? This indicates that a problem was detected in the camshaft position sensor circuit. Since it says circuit, that means the problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM. Don't just replace the CPS (camshaft position sensor) and think that will definitely fix it.

Symptoms
Symptoms can include:
  • Hard starting or no start
  • Rough running / misfiring
  • Loss of engine power

Causes A code P0340 could mean one or more of the following has happened:
  • a wire or connector in the circuit could be grounded/shorted/broken
  • the camshaft position sensor may have failed
  • the PCM may have failed
  • there exists an open circuit
  • the crankshaft position sensor may have failed

Possible Solutions With a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
  • Visually inspect all the wiring and connectors in the circuit
  • Check for continuity in the circuit wiring
  • Check the operation (voltage) of the camshaft position sensor
  • Replace the camshaft position sensor as required
  • Check the crankshaft position circuit as well
  • Replace circuit wiring and/or connectors as required
  • Diagnose/replace the PCM as required

Also, the cams/crank are out of alignment, thats why you are getting a cam position code (P0340). For more details about your model, you can visit autozone.com (free register)

Hope helped whit this (remember rated this help) Good luck.

Oct 23, 2009 | 2004 Chrysler Sebring

2 Answers

For what sensor is the code po340 on a dodge neon 04 and how i change.


Hi,
This indicates that a problem was detected in the camshaft position sensor circuit. Since it says circuit, that means the problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM. Don't just replace the CPS (camshaft position sensor) and think that will definitely fix it.

With a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:

  • Visually inspect all the wiring and connectors in the circuit
  • Check for continuity in the circuit wiring
  • Check the operation (voltage) of the camshaft position sensor
  • Replace the camshaft position sensor as required
  • Check the crankshaft position circuit as well
  • Replace circuit wiring and/or connectors as required
  • Diagnose/replace the PCM as required
Thanks.

Jun 28, 2009 | 2004 Dodge Neon

1 Answer

P0340 code


This indicates that a problem was detected in the camshaft position sensor circuit. Since it says circuit, that means the problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM.

A code P0340 could mean one or more of the following has happened:
  • a wire or connector in the circuit could be grounded/shorted/broken
  • the camshaft position sensor may have failed
  • the PCM may have failed
  • there exists an open circuit
  • a crankshaft position sensor may have failed
With a P0340 Code diagnosis can be tricky at times. Here are some things to try:
  • Visually inspect all the wiring and connectors in the circuit
  • Check for continuity in the circuit wiring
  • Check the operation (voltage) of the camshaft position sensor
  • Replace the camshaft position sensor as required
  • Check the crankshaft position circuit as well
  • Replace circuit wiring and/or connectors as required
  • Diagnose/replace the PCM as required
The location of these 2 sensors vary. Usually they can be found on the back of the engine or on the transmission. I hope this gives you some direction. Thanks for using FixYa!

Sincerely,

JC

Nov 21, 2008 | 2002 Jeep Liberty

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