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

Item S500099
Market Price $382.99 You Save 17% ($63.99)
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$319.00 (kit)

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      Review & Installation Video

      Product Information

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


      • Eliminate Pedal Lag
      • Improves Vehicle Acceleration
      • Increases Low and Mid-Range Horsepower and Torque
      • Easy Plug-and-Play Installation
      • Includes Remote Throttle Control Knob
      • Stackable with Common Aftermarket OBD-II Programmers
      • Fits All 2008-2018 GMC Sierra 1500 Models


      Say Goodbye to Pedal Lag. Get an instant pedal response on your GMC Sierra with the advanced JMS PedalMAX Throttle Enhancement Device. When driving in your Sierra and have noticed a delay in throttle response between the time you step on the gas pedal and accelerate, that is due to the modern Electronic Throttle Control (ETC) Technology, which is also known as Drive By Wire. The gas pedal is controlled electronically by sending a signal from the pedal to the ECU, which then sends the signal to the throttle body, which results in that delay. JMS has the perfect solution to get rid of that issue with their PedalMAX Drive By Wire Throttle Enhancement Device. The PedalMAX is designed to eliminate this annoying delay by enhancing the signal between the pedal, ECU and throttle body to make it more sensitive and improve your driving experience.

      Improves Power and Improves Power. The JMS PedalMAX will not only eliminate pedal lag, but it will also enhance the throttle response and improve your horsepower and torque in the low to mid RPM range.

      Maximum Throttle Response. The PedalMAX Throttle Enhancer is preset to provide maximum increase in throttle response. If you find the stock setting to be too 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, this kit also includes a Remote Throttle Control Knob, so you can adjust your throttle response from 0% to 100% on the fly 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. It is compatible with products from manufacturers such as SCT, DiabloSport, Edge, Superchips, Bully Dog, and Hypertech.

      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.

      Easy Plug-and-Play Installation. The PedalMAX Throttle Enhancement Device simply connects to the factory stock pedal position sensor using an OEM style connector with no permanent modifications required. PedalMAX is 100% reversible making it warranty friendly.

      Application. This JMS PedalMAX Drive By Wire Throttle Enhancement Device with Remote Adjustment Knob is designed for use on all 2008-2018 GMC Sierra 1500 models.

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

      MPN# PX1015GMTK

      CA Residents: WARNING: Cancer and Reproductive Harm -


      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)

      Questions & Answers (10 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 (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

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) PedalMAX Throttle Enhancer
      • (1) Plug-and-Play Wiring Harness
      • (1) RED De-Sensitizing Plug
      • (1) Knob with 5 ft. of Wire
      • (4) Zip Ties
      • (1) Mini-Screwdriver
      • Installation Instructions

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