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

Item S100178
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$289.00 (kit)

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      Review & Installation Video

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • 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


      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

      MPN# PX1015GMT

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (16)

      Write a Review

      Ratings Summary

      4.5 out of 5 overall rating from 16 customers

      Installation Time: Less than 1 Hour

      • March 01, 2020

        Review shared from JMS PedalMAX Drive By Wire Throttle Enhancement Device with Control Knob (08-18 Sierra 1500)

        5 2015 Base - Yep Installation Time: Less than 1 Hour

        Excellent item

        I wasn’t sure this pice is going to work fine, but after I put it on wow my truck respond super quick I recommend it fir sure..

        Helpful (0)
      • 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 (24)
      • 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 (6)
      • 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 (13)
      • 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

        Review shared from JMS PedalMAX Drive By Wire Throttle Enhancement Device with Control Knob (08-18 Sierra 1500)

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

        IT WORKS


        Helpful (11)

      Questions & Answers (11 answers)

      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 (2)

      had installed for 8 months now tripping codes took off and went to dealer they found in there bios and knew what was installed left off no more codes tripped so would say this maybe good at first but 300 dollar paper wt now anyone else with issues >>

      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)
      Post Your Question
      6 More Questions
      I have a 2009 sierra with 5.3 the truck is also a flex fuel vehicle will this affect anything will it still work 1 answer
      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

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) PedalMax Throttle Enhancer
      • (1) Remote Control Override Knob

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