2.8 liters have a harness that goes under the engine from the crank sensor to the module. thay have had recurant problems with this harness. it is availble through gm parts div. or you can make one if you have access to weatherpack conectorrs
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Won't turn over? Do you mean the starter won't crank the engine over?
Or the engine cranks over and won't start, and you have tested for spark when cranking and have no spark? And then you have tested the coil and ignition module, and they tested out good? Am I on the right page here? If so, maybe the next thing to check would be the crank position sensor. The ecu (computer) signals the ignitor (ignition module) when to initiate spark after it digests the signals from the crank position sensor and the cam position sensor.
You where deffinetely on the right track with the module. The other component I would suspect is the crank sensor. This can be tested with a lab scope. You should have a five volt square wave from this sensor if it is working properly.
It's also not a bad idea to make sure the module is recieving ignition power and to make sure the connector pins are clean, free of damage, and not burnt up or corroded.
Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!
Have you checked the ignitor on the car some of these have one mounted right next to the coil and they will stop it from getting fire. Also check cam and crank sensors and ensure they are sending out a signal.
You said you changed the ecm module, is that the ecm or the ignition module. Do you have access to a scanner to check cranking rpm? That way you can test the new crank sensor and the wiring and the ignition module.