Thread: 2004 GT2 Lower Control Arms

Was having this discussion a bit over in the engine forum but figured I'd create a topic in the right spot to discuss it better

I'm looking to replace my lower control arms on my 2004 GT2 but I'm having a hard time finding nicely priced arms. If I use the ACDelco Parts Catalog and enter my car, the part numbers for control arms are 45D3358 and 45D3359.

So I went on Dorman's site and looked at their products. I took the direct cross part numbers from two different sets of arms, punched them into ACDelco's competitive part search, and wrote down what ACDelco part number it popped out.

2003 Grand Prix GT

Doorman #	Direct Cross	ACDelco Part
520-167	10328903	45D3358
520-168	10328904	45D3359

2004 Chevrolet Impala

Doorman #	Direct Cross	ACDelco Part
520-165	15293665	45D3358
520-166	15293664	45D3359

They look pretty much identical, though the horizontal bushing looks slightly different. Dorman doesn't list the 2004 Grand Prix as compatible, but I get the feeling the parts will work.

Has anyone used these Dorman's in their '04 Grand Prix, and did you have to replace anything else (sway bar, sway bar link) ? Just looking for some sort of validation from someone who's done this replacement before since I live in Canada, and shipping's pretty bad to get things north of the border. I don't want to buy the wrong set of control arms only to find out they won't fit.

They'll work just fine. The arms are identical with the exception of there being a place to mount a traditional style sway bar on them, and the bushings may be a different hardness. I'm running arms from a 2000 gtp on my 04 so I could run a gmpp bar

Just to clarify for my sake, you had to change your bar and links when going to the 2000 arms?

Apparently the change was some time during the 06 model year.

Originally Posted by Fivefingerdeathpunch

Correct.

04-05 used a different bar and links.

In 06-08 they went back to the same lower control arm and sway bar as the 97-03 cars.

So you saying I can run a sway bar for a 97-03 car?

Originally Posted by matt5112

Apparently the change was some time during the 06 model year.

do you know when by chance mine was barely not an 07 so i would assume im good? built 6-6-06

Most likely.

Just go check and see what the sway bar connects to.

i know lol but im a bit busy if i could get info now it would be easier haha......97-03 sway bar connects to control arm and 04-05 it connects to the strut

dont mean to thread jack but would that mean struts for 97-03 would work on 06+

for all this is the diagram for 06+

2006 W,Suspension/Front,(Exc "GXP" Z7U) - MW06079

I mean they should.

But I'm not 100%.

I was under the impression the struts and or springs were taller in the 04+ than the 97-03.

when i looked up the excell-g struts for 2003 they were the same specs for 2006 but the agx has crazy specs