hazards280

I bought a 2005 Grand Prix GXP about 5 days ago, and was wondering if there is a way to know if your in V4 or V8 mode? Any indication besides the instant fuel economy?

Thanks in Advance

Chad

JP_GXP

The exhaust note, that's the only other way on the GXP. The SSes have a display.

LuSe4

If it sounds like a low flying helicopter is tailing you, you may be in 4 cylinder mode.

hazards280

Lmao, I know exactly what your talking about. I went for a drive just to hear this.

jdwilks

Another suggestion is get a tune and remove the DOD then you will know its always in 8 cyclinder mode

1BAD06MCSS

Amen! DOD is useless if you have a heavy foot.....

Brangeta

I like the way 4-cylinder mode sounds . Nights I come home at 1 or 2am down an empty street with a 30mph speed limit, I just stick it in 4th gear and put it on cruise control and listen to it happily chug along while making 24+ mpg.

...just about the only time I get good mileage in the GXP!

You'll be able to hear it as soon as you get sensitive to how it sounds.

Super LaX

My car is like a bank vault inside. The front windows are double-pane plus there is 1/4" thick padding everwhere (i.e., trunk, front fenders) so it is tough to discern when the DOD is kicking in.

No display in the Super.

DrJesus616

... maybe its my car or any of the montes but she is squeakier than a rusty pogo stick ... which is why i started doing stereo stuff ... i figure if its almost always on, it might as well sound better

gxp-miller-gxp

my gxp makes all kinds of noises lol. its annoying and for that reason i always have my radio on lol

LuSe4

This is why you buy 3m 2-sided tape, foam tape, and Dynamat type material. When you hear a squeek or rattle, you first get all pissed off, then you turn off the radio and hvac to locate the noise. Once pinpointed you remove the panel and apply all previously mentioned materials to make the noise stop. I haaaate squeeks and rattlles!