Thread: 2004 Pontiac Grand Prix GTP Supercharger

by chance is your abs/trac lights on? if so thats why. could be a bad hub, bad wires to the hubs.

yes, thats the problem. you need to fix the trac off light being on all the time problem. you should be able to turn it off and on at will.

most of the time the abs light, and the trac off lights come on, but trac off can also cause these problems. does the steering get stiff as well? until it pops free?

if it sounds like ive seen this problem before, its cause my car does it once a month. has something to do with the abs check, ( that crunching sound you hear when you first drive off) for some reason it fails in the first 10 feet of driving, and then it feels like the cars been tied to a stump. im still unsure if its the trans, or the brakes holding the car back.

but stopping, turning the car off, key out, door open, close the door fire it back up and drive, and 99% of the time it will pop free and drive off like normal.

if you cant find a bad hub on the car, id have it scanned at a shop. they can tell you exactly where the problem is.

if the shop only "looked" at it, like did not scan it or drive it.....they know as much as you about your problem.

Originally Posted by Grand Prix Green Hornet

I don't understand how this could be a hub problem. The car won't engage into drive when its cold. The only way to get it to move forward is to put it into reverse. Then the car will jump/bump and you can put it into drive and move forward.

i did not see that it wont move in drive at first at all????(in the first post) like it revs freely? or does it feel like your holding the brakes hard in gear and giving it gas? so the tach only goes up to say 2200 rpm?

have it scanned by a shop that can scan for abs codes, and body codes, you can try auto zone and see if their scanner picks up anything, chances are it wont.

you could have a bad abs module or bcm.

I have a feeling this is something with the tranny too. Sounds like it has a hard time getting into the gears. What's it feel like when you shift around with your floor shifter? Does the car shake bad when you switch them around?

it can pick up stored codes, and i dont think its the tranny really. seems odd that it would hold back like that, but if you back up, it free's up, then drives just perfect? seems odd.

same thing happens to my car, my original trans blew up, it did it back then, used tranny in now for the last year, and it still does it once in a blue moon. but i feel it trip when it fails the abs check.

id have the car fully scanned, if a trans shop hooks a scanner up to the car, they will know whats going on inside, they should also be able to read abs or body codes, if not stop by a body shop, they have all that stuff there. ( collision type shop)

whats the miles and hows the fluid look? still red? or dark and burnt looking? and is the fluid full when hot?

try another shop, they can scan and see line pressure, and see if solenoids are working right or not. sounds like he was busy, or just likes to sell trannys.

wouldn't it suck if he rebuilt it and it was something else?


miles on the car?

is the fluid full?

To me it sounds like a tranny problem. But that could be because for me, when something is wrong with my car, it is never the possible easier fix. To add, he said his fluid is brown.

I know that feeling when you put your car into D, try and go, but your car struggles to actually go. When that happens to me, I either put it back into park, then retry putting into D, and wait so I can for SURE feel it shift properly. It happens to my boyfriends 07 GP every now and then. Or sometimes, I am holding the gas petal down to go, and the car wont, until it will suddenly really jerk itself into 1st gear and go.

It probaby starts working normal once everything is nice and warmed up.

Are you still rolling backwards when you throw it into drive? Or do you actually completely stop before you shift it?

Yeah, I would certainly take Scottys advice.