What to do if your Pontiac G6 wont start?
Turn OFF the ignition. Test the ground circuits of the module that is not communicating for an open. If the module is the body control module (BCM), test its class 2 serial data circuit for an open, also. Did you find and correct the condition? Test the high speed GMLAN serial data circuits of the module that is not communicating for an open.
Why does my G6 not start when I turn the key?
This just means that the engine doesn’t move when you turn the key. The second way that your G6 won’t start is when the engine turns when you engage the starter, but it won’t fire and run on its own. When the engine isn’t turning over at all, that’s a bit easier to diagnose than when it is cranking but not firing.
Why does my GM car say no start no crank?
How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.
What is a typical GM starting system wiring diagram?
Click on the image here to pull up a PDF of a typical GM starting system wiring diagram. Depending on the year, model and engine of your GM vehicle, your starting system may be less complicated or use only some of the components shown here. For example, earlier anti-theft systems didn’t communicate the same way with the PCM.
Turn OFF the ignition. Test the ground circuits of the module that is not communicating for an open. If the module is the body control module (BCM), test its class 2 serial data circuit for an open, also. Did you find and correct the condition? Test the high speed GMLAN serial data circuits of the module that is not communicating for an open.
How does the ignition switch work on a GM car?
In this vintage, GM uses the ignition switch as a signaling device to tell the body control module the position of the lock cylinder. There’s one voltage when the key is in the lock position, another when it’s in the START, and a third when it’s in the RUN position. But the BCM should never see voltage when the key is in the ACC position.
How long do you leave ignition key on while programming?
Connect a battery charger to the battery to ensure power is available while programming. Both the BCM and PCM must be working and communicating with each other. Insert ignition key and turn to the “ON” position. Do not attempt to start the engine. Leave the key in the “ON” position for approximately 11 minutes.
Where does the GMLAN key go on a Pontiac G6?
The BCM sends a high speed GMLAN serial data message to the engine control module (ECM) that the key is in the start position. The ECM receives the message from the BCM, and also receives a serial data message from the transmission control module (TCM) containing the shift lever position.
What to do if your G6 wont start?
Re: I got a 09 pontiac g6 wont start.there is no crank no… You have know idea how the starting system works , an with the engine light on your best bet would be to have it towed to a qualified repair shop .
Why is my Pontiac G6 not cranking at all?
I have a pontiac G6 2008 and battery was bad so i had someone switch them out for me only he hooked cables up wrong and it spit smoke out the radiator. It cranked after that snd i let ot run for sbout 5 min and turned it off. Now everything powered works but it wont turn over and the odometer reads ERROR.
What kind of car does Pontiac G6 GT?
I have a 2005 Pontiac G6 GT model. Whenever I start my car it starts and then immediately shuts down. I don’t get a check engine light or anything. It will start if I give it a little gas and then it runs normally. I have also experience a loss in power and gas mileage even after replacing plugs and wires.