20 Most Recent 2005 Pontiac Grand Prix - Page 10 Questions & Answers

Your blower motor resistor has gone out. I belive on an 05 Pontiac it is located under the dash behind the glove box. It is square with a plug in with wires coming out of it with 2 screws holding it in.

Although this could be a number of things, it sounds like the damper (control switch) is faulty. When you adjust the temperature in the cabin of the vehicle to be either hot/cold it should move the damper to change the temperature. This is done by vacuum in most cases. I would recommend that you start with the simplest of things and check the fuse panel making sure that the fuse for the Heat/AC system is good and making contact. If that is not the issue it could be as simple as a bad vacuum hose, a faulty damper, or a faulty temperature control switch. Speaking from experience with GM products, it is probably the damper control. I hope that you have found this information to be useful, and if I can be of any further assistance, please let me know. Thank you for using fixya!

I don't know what your mechanic did it would be helpfulthere is so many things to watch. like iac valve , crankshaft sensorand so on first try to know when it happen if there is spark at spark plug wire with special tools (hei tester) it has an output of 25kvoltsand if fuel pump is workingdid a tune up have been made spark plug changehope it helps

one question is your abs or brake light on. you might have a wheel abs hub going out and not reading that will prevent traction control to work

possibly got defected sensor or no power going to sensor

Most of the time you can reset it by disconnecting the battery and wait 30 sec - 1 min. Then reconnect it.

Was that a specific vacuum line?

the firing order is make by the pcm and ignition module

on coil pack between the spark plug wire it is written ex; first coil 1-4 2-5 3-6 or else that give you the cylinder

yes but the relay is usually with the resistor module

To reset most cpu controlled warnings you will have to use a code reader for the job

Dont touch the gas pedal or it might flood and not start. Have someone spray a little starting fluid in the Air filter tube while you try to start it.

What do you mean?

Wrong product category

We do not have wiring diagrams here. Sorry.