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1999 GMC Sierra Gas Saving Products

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Latest Customer Reviews

Gibson Exhaust Systems Reviews


Did not fit out of the box - modifications required.

Reviewed By DeWayne W (Raleigh, NC) Reviewed for a 1999 GMC Sierra —1/9/2017 9:18 AM

I have a 1/2 ton 1999 GMC Sierra Extended Cab Long Bed pickup and Gibson is about the only company that still makes an aftermarket cat-back system that will fit my truck. It was supposed to be a simple bolt-on installation, but the exhaust system was too long and didn't line up with the stock exhaust hangers on my truck so I had to cut one pipe shorter. I'm still working with Gibson on a few issues, but overall the quality isn't bad however the fitment issues were a huge disappointment.

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Hypertech Max Energy Programmer Reviews


hypertech max energy programer

Reviewed By james b (CHAPMANSBORO, TN) Reviewed for a 1999 GMC Sierra —3/12/2016 12:49 PM

dose every thing it said it would . I can really tell a difference in performance!

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K&N 57 Series FIPK Air Intake (50-State Legal) Reviews


GMC Sierra 1500

Reviewed By Logan D (ALLIANCE, NE) Reviewed for a 1999 GMC Sierra —6/17/2015 5:17 AM

It was easy to install and also had a great appearance for my 99 Sierra. Overall, I was impressed with how easy it was to install and also the performance I got out of my truck right after installation! A+

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Helpful 1999 GMC Sierra Gas Saving Products Articles