Free Shipping On Orders Over $75. Details

Talk to a Silverado Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$4,500 Giveaway! 3 Winners Enter Now

JMS PedalMAX Drive By Wire Throttle Enhancement Device w/ Control Knob (08-18 Silverado 1500)

Item S100178
Market Price $319.00 You Save 9% ($30.00)
Our Price

$289.00 (kit)

FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
In Stock

Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features, Video & Details

    • Eliminates Throttle Lag
    • Improves Vehicle Acceleration
    • On-The-Go Adjustment w/ Included Control Knob
    • Easy Plug & Play Installation
    • Stackable with Common Aftermarket OBD-II Programmers
    • Fits 2008-2018 Chevy Silverados

    Review & Installation Video

    Review & Install Video

    Put a Spring in Your Truck's Step. As powerful as they look on paper, today's engines often don't feel as responsive as the numbers would suggest. That initial split-second hesitation after throttle tip-in can feel like an eternity. It can make a 420-horsepower monster seem like a pushcart under the wrong conditions. To eliminate this annoying delay JMS created their PedalMAX Electronic Throttle Enhancement Device.

    Take Up the Slack with PedalMAX. Using your truck's own drive-by-wire circuitry, the JMS PedalMAX eliminates the lag. It makes your engine's power available instantaneously. It improves automatic transmission shifting, and eliminates stalling with manual transmissions. Overall, it hones your engine's response to a sharper edge. Included in this package is the JMS remote control knob, which allows you to adjust your throttle response on-the-go.

    Maximum Throttle Response. Out of the box the PedalMAX Throttle Enhancer is preset to provide maximum increase in throttle response. If you find the stock setting to be to aggressive for your driving needs you can insert the supplied 4-pin RED de-sensitizing plug into the device. The RED de-sensitizing plug will reset throttle response to about 60% of the maximum setting. However, with the included Remote Throttle Control Knob you can adjust throttle response from zero to maximum or anywhere in between to match your specific driving style.

    Stackable. The JMS PedalMAX can be stacked or used in conjunction with other aftermarket OBD-II programmers and monitors such as: SCT, Diablosport, Hypertech, Superchips, Bully Dog, and Edge as well as JMS' own BoostMAX Performance Booster.

    Modern Electronics. The PedalMAX Drive By Wire Throttle Enhancement Device features JMS's exclusive state of the art digital technology housed in a proprietary sealed enclosure. The PedalMAX comes complete with plug and play wiring harness using OEM connectors for a quick installation.

    Quick and Simple Installation. PedalMAX connects to the factory stock pedal position sensor using an OEM style connector with no permanent modifications required. There's no ECM reprogramming required and it's 50-state emissions legal. PedalMAX is 100% reversible making it warranty friendly.

    Application. This JMS PedalMAX Drive By Wire Throttle Enhancement Device w/ Control Knob is designed for use on all 2008-2018 Chevrolet Silverado models.

    Fitment: 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Details

    MPN# PX1015GMT

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) PedalMax Throttle Enhancer
    • (1) Remote Control Override Knob
    Installation Info

      Customer Photos

        Questions & Answers (10)

        5 Top Rated Questions

        I read in another response to a question that; 'This will not set any codes or show up when scanning the vehicle, and should not effect your warranty.' My Question; Can it be disconnected if the car needs to go to the dealer, with no issues, reconnected / installed the same way after?

        • This device simply routes and connects to your existing sensor from your accelerator. If you need to remove the device, simply remove the wiring and you are fully back to the original factory harness with no trace of the device being installed.

        Helpful (1)

        does anyone else have an issue with tripping check engine codes uninstalled to to dealer and This does show up in your bio's they new exactly what was installed 2017 silverado 6.2L

        While this will not increase gas MPG, will it decrease MPG significantly?

        • You may see a slight decrease in MPG, but it can honestly depend on how the vehicle is driven.

        Helpful (0)

        Will this work with 2018 Silverado 1500 LT 5.3 8 spd trans with E assist Crew Cab????

        • This throttle enhancement will be able to work on your Silverado.

        Helpful (0)

        I have a 2009 sierra with 5.3 the truck is also a flex fuel vehicle will this affect anything will it still work

        • This PedalMax product is compatible with the Sierra 5.3L Flex Fuel and will not affect the performance of your truck.

        Helpful (0)
        Post Your Question
        5 More Questions
        Does this product come with a warranty? 1 answer
        What's the warranty from JMS on this product? 1 answer
        My 2015 Sierra (5.3) currently has a tune done with a EFI Live AutoCal tuning system. Will that have any negative effect on this product? 1 answer
        Will it void warranty and do it add miles per gallon 1 answer
        Void warranty? Will this show up on a dealer scan? How does this exactly work (does it reprogram computer)? 1 answer

          Customer Reviews (15) Write a Review

          Ratings Summary

          4.5 out of 5 overall rating from 15 customers

          Installation Time: Less than 1 Hour

          • July 26, 2019

            5 2017 LTZ - Deni Installation Time: Less than 1 Hour

            Pedal max

            Worth every penny! Wakes your truck up!! No more lag or slow get up. The throttle is very touchy and responsive. 100 recommend buying it!!

            Helpful (2)
          • March 08, 2019

            5 2015 - HeavyChevy

            Great Product

            Very noticeable difference. Adjustment knob is a must.

            Helpful (0)
          • October 03, 2018

            1 2016 LTZ - ClayR Installation Time: Less than 1 Hour

            Horrible investment

            I don’t know why or how, but this device literally screwed up the ecu in my truck! I just bought this truck too and it’s already in a shop getting fixed. DO NOT BUY THIS JUNK!

            Helpful (20)
          • September 25, 2018

            5 2017 LTZ - StevenW Installation Time: Less than 1 Hour

            love love love

            eliminated throttle lag , and my 6.2L 8 speed shift issues 90 gone

            Helpful (5)
          • September 15, 2018

            5 2008 LTZ - WilliamK Installation Time: Less than 1 Hour

            It was a very easy install

            I can't believe how easy it was to install and it does everything they promised I'm very very happy with the product well worth the money I think

            Helpful (4)
          • September 04, 2018

            3 2017 LT - FloydM

            Good response

            This item did what it says it'll do. However, my trucks computer had some issues with this. My check engine light would come on due to loss of traction control and the engine would put itself in a reduced power state. I would then have to unhook the Pedalmax to reset the computer. I never hooked it back up cause I dont want to run the risk of jacking my trucks computer up.

            Helpful (12)
          • August 15, 2018

            5 2017 - MichaelA Installation Time: Less than 1 Hour


            best thing I put on my truck so far. well worth the money.

            Helpful (7)
          • July 15, 2018

            5 2018 LT - ScottC Installation Time: Less than 1 Hour

            Woke the truck right up!

            so I was sick of the throttle lag with a brand new truck, this device woke the truck right up. I am happy with my purchase.

            Helpful (11)
          • July 07, 2018

            5 2014 SLT - BobO Installation Time: Less than 1 Hour

            IT WORKS


            Helpful (11)
          • May 26, 2018

            5 2017 SLE - Scot Installation Time: Less than 1 Hour

            Big improvement in drivability

            Installed today on 2017 GMC Sierra with 5.3 and noticed instant improvement in response. Both off the line and going down the highway. I bought kit with control knob, but unhooked and left at 100 default. Highly recommended to improve drive by wire issues. Very happy with results.

            Helpful (16)
          • May 06, 2018

            3 2014 LT - GregoryW Installation Time: Less than 1 Hour

            JMS PedalMax

            Product is ok. Does give you faster response and don’t have to hold the throttle down to the tires before your truck drops a gear and goes. Sometimes it’s a hit or miss and seems faulty and does not respond all the time.

            Helpful (15)
          • April 08, 2018

            5 2011 LS - RickB Installation Time: Less than 1 Hour

            Truck woke up!

            Easy install , Was very surprised at the throttle response . complete 180 from what truck ran like prior to install. Took longer to disconnect battery than to install Pedalmax. Plug and play don't get easier than that..

            Helpful (12)
          • March 18, 2018

            5 2016 SLT - JefferyS Installation Time: Less than 1 Hour

            Came to life!

            Supercharged 6.2, lots of towing power... but not too impressive on street. Until I got this. It brought my truck to life for sure. Have to dial it down to keep tires from breaking loose.

            Helpful (13)
          • March 17, 2018

            5 2015 SLT - RobertN Installation Time: Less than 1 Hour

            JMS PedalMAX w/ Control Knob.

            Was surprised at how noticeable the difference was once this was installed! However the video used for the description of this product should be corrected, as the guy describing the item clearly says (@ 0:42) that this device plugs into the trucks OBD-II port when in fact it actually plugs into the pedal position sensor. This may cause some confusion. But I would definitely buy this item again as well as recommend it to others.

            Helpful (17)
          • June 22, 2017

            5 2015 LTZ - MikeL Installation Time: Less than 1 Hour

            JMS PedalMax

            It took me less then 5 minutes to install the pedalmax. It works great. I get much better throttle response. It has made a positive improvement. I would recommend this product.

            Helpful (31)

          Related Silverado 1500 Categories