2005 - Base Model - Serpentine Belt Pattern Diagram

**YMS1975** · 09-16-2011

Hey folks,

I'm looking for a diagram of the 2005 Grand Prix (Base Model) serpentine belt pattern.

Anybody???

**blueguy** · 09-16-2011

**YMS1975** · 09-16-2011

Originally Posted by bluegtp91

Thanks boss!

I just finished installing a new alternator & serpentine belt. I've noticed two things since doing so :

1) When in park, if I hit the accelerator my car now cuts off power not allowing the RPM's to go above 4000. I don't think this ever happened before (although I'm not 100% certain). When on the road, there's no problem, so it might be a safety feature on this "new" alternator.

2) One edge of the belt is straddling the pulley right up on the edge of the pulley. I'm a bit concerned that it might fall off in time. Is this out of the realm of possibility or are my fears founded?

Lil' help?

**BlackGT97** · 09-16-2011

belt should be on the edge of the tensioner pully. if its on the edge of the crank, alt, p/s pump, water pump, or a/c pully, then its not lined up right.

**Fivefingerdeathpunch** · 09-16-2011

the reason you cant rev it past 4k is so you dont blow it up. Its the rev limiter in park.

**YMS1975** · 09-17-2011

Originally Posted by Fivefingerdeathpunch

the reason you cant rev it past 4k is so you dont blow it up. Its the rev limiter in park.

Rev limiter eh? I don't think that feature was there before I put this new alternator in.
Anyways, thanks for the heads up though....I'm learning.

I also noticed something else; with my old alternator whenever I hit speeds of 160 km/h it would cut out; not allowing me past that speed. Today, I took her out for a test drive and she flew past 160 km/h. I was shocked that I could do this. It's definitely the alternator because I could never do that before. I bought my car second hand, and I'm quite sure my alternator was the original one. Do you think it's a limitation on the O.E.M alternator?

Lastly, I installed a new battery today; a Motomaster Eliminator Spiral Grid Battery from Canadian Tire. Two things :

1) The posts are in the middle of the battery which made hooking it up a real pain in the....well, you get the idea. Why would they position it in the middle of the battery like that?

2) When I tried to refasten the nut to the battery posts/terminals, sparks started flying everywhere! It was like when you put a negative cable to a positive cable. I couldn't really fasten the nut properly. Oh, and just so we're clear....the cables are definitely on correctly (negative on the negative post, positive on the positive post). I don't understand why this happened. Can somebody please explain?

**Silver GTP** · 09-18-2011

The speed limiter is in the PCM. The alternator has nothing to do with that.

**YMS1975** · 09-18-2011

Originally Posted by Silver GTP

The speed limiter is in the PCM. The alternator has nothing to do with that.

Ok....

But then why did it cut out previously at 160 km/h and not now? That part still doesn't make sense to me. Clearly the car would cut out at 160.....and now it doesn't.

I don't understand why that is (not that I'm complaining).