Gibson Exhaust For 07 Sierra Question

IceBeNot · February 8, 2008

I was wondering if you guys can help me out with a purchase I want to make. I been eyeing the Gibson Split Rear Exhaust systems lately for my 4.8 v8 2007 Sierra SLE regular cab shortbed (new body style). But I am having trouble trying to figure out which model is the correct one for my truck. I am going through a list and the only one that seems to be the correct model would be this...

Model # 65634

"07 & up GMC Sierra

Regular Cab

Gasoline

4.8 Liter

5.3 Liter

Standard/Short Bed - 78.7"

1500

New Body Style

Active Fuel Management"

But, I don't think I have "active fuel management". I can't seem to find it in my manual anywhere. How do I find out? I would appreicate it if anyone can help me out.

daivdo · February 8, 2008

I don't think the 4.8l has active fuel management.

IceBeNot · February 8, 2008

I don't think the 4.8l has active fuel management.

Does this mean I can't get this exhaust system?

wlvrn1215 · February 8, 2008

no it just means you dont have AFM....I wouldnt go with gibson either. Their mufflers are thin junk Just my .02

IceBeNot · February 8, 2008

no it just means you dont have AFM....I wouldnt go with gibson either. Their mufflers are thin junk Just my .02

What's a good system then? Corsa is just too expensive.

jcgilpin · February 8, 2008

Heard good things from a magnaflow setup, yeah the Gibsons seem to create some bad drone.

bossier62guy · February 8, 2008

no it just means you dont have AFM....I wouldnt go with gibson either. Their mufflers are thin junk Just my .02

What's a good system then? Corsa is just too expensive.

I've been running a Gibson system on my 02 since I bought it and I've had no problems w/ it whatsoever. Even if it does rust out it's warrantied for life if I'm not mistaken and I also like the low tone it produces.