Gas Pedal Flex Solution

mookdoc6 · October 1, 2017

Hey, I have the adjustable pedals on my 2018 and the entire pedal seems loose and moves loosely in every which direction. I'm not sure if I have a fluke or if this is normal between all of the adjustable pedal models. I had a 2014 with non adjust and it had minimal flex but I still did this mod. Looking at my 2018 It doesn't look like as easy of a solution.

Any way you could post some pictures or more detailed process of what you did? Would be appreciated if you did.

Go to "throttle response is poor" Post #56 If you decide to change anything with instructions Stack 1qty more washers for each bolt and that is ALL NO MORE Stacking to get pedal to a closer PLANE WITH BRAKE! Others have completed this task and no problems as of yet! Mine is golden!

jaymiles007 · October 2, 2017

Go to "throttle response is poor" Post #56 If you decide to change anything with instructions Stack 1qty more washers for each bolt and that is ALL NO MORE Stacking to get pedal to a closer PLANE WITH BRAKE! Others have completed this task and no problems as of yet! Mine is golden!

Hey Thanks!! Will try that out soon!

jaymiles007 · October 2, 2017

Go to "throttle response is poor" Post #56 If you decide to change anything with instructions Stack 1qty more washers for each bolt and that is ALL NO MORE Stacking to get pedal to a closer PLANE WITH BRAKE! Others have completed this task and no problems as of yet! Mine is golden!

Hey, I actually have another question for you are anyone with the adjustable pedals. When I push down the pedal, it goes almost all the way down to the "floor" and then acts like its hitting a stop and then if you push really hard it will click down another 1/2" maybe for FULL throttle. My question is, is that normal for there to be a stop there? Shouldn't it smoothly go all the way down to the floor? I know my old non-adjustable pedals in my 2014 didn't do this and neither does my dad's 2014 Silverado.

mookdoc6 · October 3, 2017

Hey, I actually have another question for you are anyone with the adjustable pedals. When I push down the pedal, it goes almost all the way down to the "floor" and then acts like its hitting a stop and then if you push really hard it will click down another 1/2" maybe for FULL throttle. My question is, is that normal for there to be a stop there? Shouldn't it smoothly go all the way down to the floor? I know my old non-adjustable pedals in my 2014 didn't do this and neither does my dad's 2014 Silverado.

that is your kickdown detent!

heavyhitter · October 5, 2017

I don't think every truck has it as bad. I drove 4 trucks between 2 dealers and took one truck home over night even. One of the trucks had no issues. I felt the other 3 trucks had a vagueness and sloppy throttle response.

I have a 17' with adjustable pedals. Sadly mine had the crappiest feeling gas pedal of them all. I used cut a 2.5" piece off of a paint stick and slid it behind the plastic base and metal floor. It was a bit discerning that it kind of went all in and disappeared back there. The results? WOW night and day! Dare I say that my throttle is almost too sensitive. A little press with the foot goes a long way. Immediate acceleration when I press the pedal.

This is a must do IMO. The mushy non responsible throttle was a huge black eye to my truck, making it less enjoyable to me. I did this mod after reading about it here. I only had 300 miles on her and couldn't take it no more. The truck feels faster and peppier with the quicker throttle response.

FL335i · October 7, 2017

Wow, years later my post is still going strong. I'm at 71k miles and my paint stick fix is holding up great!!! I put an Airaid MIT intake pipe on my truck last weekend (still running factory air box and K47 Wix Filter) and this week in the mother f'n stop'n go rush-our traffic was better. Driving our trucks in 105*F bumper to bumper traffic for 1-2hrs on the way home makes you feel like a wooly mammoth surrounded by swarms of lightning fast mosquitoes (corollas). Our trucks do not have the input response like these little happy meal cars that I have to deal with in Tampa. My wife's '15 Enclave is much more suited for that driving. It has perfect throttle response and the transmission programming is done so well I would buy a beer for the person who programmed it. Based on my 3yrs and 71k of driving my truck in heavy traffic my items that help combat slugging reactions have bee:

-Transmission fluid. The 6spd loves fresh clean fluid. IMO, 45k service interval is max on this 6spd for my driving use. I even installed an external spin-on filter which has helped keep the fluid clean and the transmission in a ren and stimpy happy happy joy joy state.

-Gas pedal shim. Hence this thread I started years ago. Coming from my E39 530i M-Sport and FBO E90 335i, the reactions on the truck were a learning curve. The shim is a must do. Best mod on my list.

-Oil Catch can.

-Airaid MIT pipe helped with throttle response. Only reason I bought it. Could care less about HP gains.

-Cat-back exhaust helped out.

-CLEANING THE THROTTLE BODY FREQUENTLY. this is a big one. I cannot believe the difference it makes. Clean both sides of the butterfly and wipe the throttle body down.

Edited October 7, 2017 by FL335i

Iceman22 · October 8, 2017

Checking in....

Read through this whole entire thread on Wednesday and finally caught a day off so I tackled the mod this morning.

Just to the scene; I have adjustable pedals maxed out in down position. I pulled the plastic loop under the pedal up and out as far as a I could and began stacking shims until there was absolutely 0 play between the plastic bracket and the firewall. Ended up having to stack 4 high at a measured thickness of 0.48 inch total.

Anyone else get close to a 1/2 inch of shim? I thought this seemed pretty high to what I remember reading....

In any event; I took it for a test drive and my immediate impression is night and day. It has removed a significant amount of delay in the throttle response!

Sent from my iPhone using Tapatalk

Vic Anand · October 26, 2017

I picked up a 2017 Silverado 4x4 Double Cab LTZ with a 6.2 last week. So far, I love the truck. I stumbled upon the pedal flex by accident. I was confused by the kickdown detent in the accelerator pedal. At first, I thought maybe the pedal was getting caught on the rubber floor mat. When I stuck my head in the footwell, I noticed the pedal flex.

I immediately wanted to fix the pedal flex, and my family thought I was crazy until I stumbled on this thread. After reading everybody's experiences and solutions, I bought some "rubber cups" from Ace Hardware (see attached photo). I trimmed one with some scissors and wedged it between the plastic backing plate for the accelerator pedal bracket and the floor (see other attached photo).

This reduced the flex by about 90%. Throttle response on the truck is much improved. It now feels like I have a more direct connection between my foot and the engine. Before, it felt sloppy. Thanks everybody for figuring this out. I agree this should be a sticky.

dennis good · November 13, 2017

On 12/22/2014 at 8:51 AM, Silverado-Hareek said:

This has been my complaint from day one on these trucks....you have to basically floor the accelerator pedal to get the truck to move. It's raining like hell today but when the weather clears, I'm going to look at my bracket and I might try this fix if I notice the play. I'm wondering if this is in any way related to the gas pedal vibration:

http://www.gm-trucks.com/forums/topic/157796-vibration-in-floorboard-not-speedtire-related/

I thought my transmission was slipping,thanks for the heads up

Greenie · January 23, 2018

Huge shout out to the OP FL335i on finding this! I have complained about this since I bought mine 2 years ago and found this thread yesterday and read it all through and when I got home I checked my late '16 build CC Z71 and sure enough I has approx. 1/2" play. I cut two pieces of an old Equinox slush mat and tucked up on both sides of the last bolt and drove it this morning and sure enough it's night and day. It's a shame a $52K truck takes a 10 year old floor mat to fix something so senseless. Will look at the wife's Tahoe tonight and see if hers is the same because I actually got the link to this thread off of the Tahoe forum lol. Thanks again!

reardiff · January 23, 2018

This is on my to do list for tonight. Is it possible to 'over shim' and put too much pressure on the bracket and break something?

Mike GMC · January 24, 2018

I checked mine this evening. It had some flex, but not as hard as some have described. I cut a short piece of a 1/4" trim board I had in the garage. Got it set in there and the small amount of flex I had is all but gone. I'll see if it's noticeable on my way to work tomorrow. I never would have guessed the pedal assembly would flex like that.

kevinfranklin · January 24, 2018

On 10/26/2017 at 8:46 AM, Vic Anand said:

I picked up a 2017 Silverado 4x4 Double Cab LTZ with a 6.2 last week.

I immediately wanted to fix the pedal flex, and my family thought I was crazy until I stumbled on this thread. After reading everybody's experiences and solutions, I bought some "rubber cups" from Ace Hardware (see attached photo). I trimmed one with some scissors and wedged it between the plastic backing plate for the accelerator pedal bracket and the floor (see other attached photo).

So it looks like you trimmed/tore away some of that rubber or foam material to get access for the shim........is that right?