Hey guys I have a 2004 Pontiac Grand Prix GTP with 75,000 miles. The other day when I tried to start the car I got no response, no engine turning over at all so I assumed the battery was dead. Also I noticed the wiper blades were pointing up which I found odd since I had not used them the night before. The first thing I tried was to jump the car which did not work. So I got the battery tested at Autozone and I was told it was dead. I replaced the battery with a brand new one and the car still will not start. When I turn the key you can hear the fuel pump engage but no engine turning over. The keyless entry will not work, the power windows and locks do not work, and none of the lights inside the car and the radio dosn't work either. But you can hear a faint static coming out of the speakers even when the key is not in the ignition. However the headlights do work. So the battery is working and was part of the problem.. But now I am unsure what the actual problem is.. Possibly an electrical problem or my ignition swictch? Has anyone else encountered a similar problem? I have disconnected the battery so it does not get drained while the car is sitting. Any help or advice would be greatly appreciated. Thanks!
2004 GTP Won't Start
- Thread starter sjw515
- Start date
Bills1997GTP
New member
Sound like an ignition switch but I could be wrong
acidcrashdburnd
New member
Time to start checking fuses. Look at the one related to IGN or PCM under the hood and pass side dash.
Hey guys, my name is Dave and I am sjw515's brother. I have been trying to help him diagnose/fix the car. I checked all the fuses that I can test (where you can see if they are blown) but some of the larger ones that are square shaped you can't really tell if they are bad or not. Anyone know how to test those?
It does seem like it is something fail-safe related that is not allowing the car to start like a fuse, switch, or something like that. When you turn the key on, you hear the fuel pump engage as he said. Then, when you try to start the car, nothing happens. The starter doesn't even click or anything.
It does seem like it is something fail-safe related that is not allowing the car to start like a fuse, switch, or something like that. When you turn the key on, you hear the fuel pump engage as he said. Then, when you try to start the car, nothing happens. The starter doesn't even click or anything.
acidcrashdburnd
New member
When I blew the PCM fuse it would still click. Nothing about security on the DIC? it might just be a switch they do go bad in these cars.have you tried to jump the started to check if will even crank?
Bills1997GTP
New member
It's a screen on the dash that tells you the miles on your car
If I am remembering correctly, it is not lighting up as well as all the interior lights. I think the only light I could see was the check engine light. nothing else was responsive ( power dowers and locks, etc). headlights did work though...
acidcrashdburnd
New member
I wonder if you BCM (body control module) has died. That is located on the drives side of the dash behind that panel covered by the CLOSED door. Also check the grounds at the transmission bell housing almost all of them are there.
it controls almost everything in the cabin.
it controls almost everything in the cabin.
acidcrashdburnd
New member
I would check the wires on the starter, check the wire on the alternator, check the grounds, check the power cable going to the fuse box under the hood..
is there a way to test it or narrow it down to that? otherwise we are just pulling it out and buying a new one? sounds expensive if its not the culprit.
power cable to fusebox is good. can check the other wires/grounds also but it just feels like we would be taking a stab in the dark. the car is parked in an apartment complex and there aren't a lot of options for tools, etc. I was hoping to narrow down the issue to something given the issues we are having but i guess its never that easy
acidcrashdburnd
New member
Morad Parts Company - 3800 Motors, Transaxles, & Stock Parts
You will probably need a tow to a stealership to reprogram it, unless you know someone with a GM Tech2 scanner. Give ed a call he will set you up.
And it would give you an idea if the switch was bad, I don't actually think the car would start but it should at least crank.
You will probably need a tow to a stealership to reprogram it, unless you know someone with a GM Tech2 scanner. Give ed a call he will set you up.
And it would give you an idea if the switch was bad, I don't actually think the car would start but it should at least crank.
rperry435
New member
Highly doubt the switch is bad. It's not like a switch from a 97-03. 04+ use a low amperage style switch. BCM must be programmed with a tech2. They CANNOT be used as they are locked after a few ignition cycles. Symptoms of a bad bcm are no Interior lights,security not enabling starter, locking issues, radio not powering on or locked, no communication with the bcm. Check your power and grounds at the unit other than that sounds text book bad bcm
Jumping your starter will prove nothing other than the starter motor itself is fine. The car will still not run
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Jumping your starter will prove nothing other than the starter motor itself is fine. The car will still not run
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He was looking at ones from ebay.. So they quite possible would be used ones. But I work for Carquest and can get a new BCM for $110. Thanks for all the help and ill keep you updated.