Your Cart Is Empty

1999 GMC Sierra Performance Chips & Programmers

Have a Question?
Have a Question? Ask a product expert! (800) 874-8888 Live Chat

  • shipping icon
  • Not Rated Yet

 

View all reviews for this product

There are no customer reviews for this product

You may only compare up to 5 products at a time.
Please select at least two products to start comparing.

Latest Customer Reviews

Hypertech Max Energy Programmer Reviews


Hypertech Max Energy Power Programmer

Reviewed By Richie F (FARMINGDALE, NY) Reviewed for a 1999 GMC Sierra —3/11/2014 8:57 AM

I have a 99 Sierra short bed, Cold air intake, throttle body spacer, Magna flow cat back and 33 inch tires and rims. Your product really Woke my truck up,also took care of tire ,speedometer and shifting issues I would let you know about the gas mileage but I can't keep my foot off the accelerator. This is a Great product and your service was excellent

View More Reviews

Superchips Flashpaq Tuner Reviews


GREAT

Reviewed By german b (SCOTTSDALE, AZ) Reviewed for a 1999 GMC Sierra —3/6/2014 9:14 AM

Once i install it into my truck right away i notice the difference on my rpm's.

View More Reviews

Hypertech Max Energy E-CON Reviews


max energy e-con

Reviewed By william b (Holland, MI) Reviewed for a 1999 GMC Sierra —3/23/2011 6:41 AM

the trans shifts are great for part throttle as is full throttle. gas mileage has yet to be know as no fillup as of yet .easy to install once downloaded .

View More Reviews