Acceleration

SuperSierra · July 2, 2017

I have the adjustable pedals, so pretty sure that won't work for me. I also didn't feel the flex in the pedal either.

Would this guys step by step work?

Sorry, I am mechanically versed but computer illiterate! All I can do is walk you through to make it easy peasy!

1st go to ACE Hardware and buy the White nylon/plastic Spacers "6QTY TOTAL" in this EXACT SIZE....1/8" thick and 1.125" OD the 1.250" would work too but not sure.

2nd I would use a plastic/synthetic shim instead of wood but I suppose wood works fine too...I am just that way though. Home depot sells a package of em couple bucks.

3rd go home and remove the plastic retainer clip on the electrical connection to accelerator the bigger one and disconnect......Look straight up and disconnect the smaller connection there is no safety clip on that one.

4th get a Torx drive probably 30-40 in size not sure I never looked just thought to myself it was bigger than I expected and remove the 2qty Torx bolts that attach the actual pedal to unit.

5th use a 10mm extended socket on a 6" extension and remove the 3qty nut/washer all in ones that hold the unit onto the plastic bracket. The nut inside the unit can only be reached through a hole and JUST BE CAREFUL WHEN REMOVING YOU DON't DROP the nut inside the unit.....I DID but got it with magnet just was annoying and 105 degrees out....

6th once the sending unit has been removed place your 2qty plastic SPACERS PER BOLT=6QTY TOTAL from ACE over the bolts that have a I.D that is just bigger that the bolt itself...I think the ID's were .300"

7th Place unit back onto bolts and even it out inside it's preformed position and slowly tighten up the nut/washer all in ones using a TORQUE PATTERN because it flexes and creaks and keeps getting tighter to the plastic form this way and the washers seat etc. You will know when your done because the bolts will now stick past the nut/washer just shy of 1/4" and they will be snug but can deceive you if your not careful when tightening.

8th put the accelerator pedal back, tighten the 2qty bolts nice and tight and place BOTH electrical connections back!

9th now pull the carpet and foam back/down and out of your way. CUT the 1st Inch of plastic SHIM and last 2" off so your left with the middle....Grab a prybar or cats paw or something and some decent caulk! Just shoot a bunch of caulk up under the gap behind the plastic piece that is sticking 1/8"1/4' off the metal floorboard/firewall and use your pry bar higher up on the side and pull it away more and quickly jam the shim in behind and let go with pry bar.....Still not done grab a flathead and push the shim up yet higher to really get that bugger up in there tight! Replace foam carpet etc. and you don't need to cut any of that if your wondering.

10th final step promptly back the pig out of driveway and rip it! It's freaking NICE all thanks to the OP!

Can you stack 3qty per bolt? Yeah, you probably could but I wanted to make sure I had enough bolt left and didn't want protruding awkwardly from plastic mold on the floorboard. I perfectly fine with the 2qty stacked and the finished product is very stout nothing janky/chincy about it!

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SilveradoSaver · July 2, 2017

Would this guys step by step work?

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Possibly. Unlike the poster, I am not mechanically inclines, haha. I'd probably end up making it worse Thanks for the info though!

lloydsmale · July 14, 2017

Mine does it when its cold. Usually when I first take off in the morning. I was told on another fourm by a certified gm mechanic that it is a computer program that retards timing when cold to warm the catalytic converter up faster.

sdeeter19555 · July 14, 2017

Mine does it when its cold. Usually when I first take off in the morning. I was told on another fourm by a certified gm mechanic that it is a computer program that retards timing when cold to warm the catalytic converter up faster.

Mine too....

OP, if this is something that has just recently started to occur, could it be the throttle body needs cleaned?

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lloydsmale · July 15, 2017

don't know but mine is a 17 and only has 5k on it and has done it since new so I doubt its a dirty throttle body

SilveradoSaver · July 15, 2017

Mine too....

OP, if this is something that has just recently started to occur, could it be the throttle body needs cleaned?

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Possibly. Maybe something I will look into. Truck only has 50,000 km on it so it shouldn't be that bad. But no harm in cleaning it regardless

slee3247 · July 16, 2017

Find a good dealership that will work with you on a tuned vehicle. If you're not racing the truck, chances are very slim that anything will go seriously wrong.

I'm lucky to have a great dealership 20 minutes away. It's amazing what torque management does to neuter these vehicles. (Even though it's been around since the 80s)

boyzzsandtheirtoys33 · December 31, 2018

On 6/27/2017 at 8:01 PM, SilveradoSaver said:

So, lately I've been noticing my truck (2015 Silverado 1500 5.3L V8 Crew Cab) has been sluggish while accelerating. Not all the time; it is intermittent. Could be from a stop or from a crawl usually. I'll hit the gas and I'll feel like a hesitation and no "oomph" and then it feels like the engine seems to lurch/stagger and then I'll get the regular acceleration and then it seems to be a non-issue.

Any thoughts would it could be? Truck just rolled into 50,000 kms and I've got a CAI and Borla exhaust - if it matters.

Thanks!

If you want improve your throttle response, i highly recommend getting a throttle commander. I purchased mine a couple weeks ago and their is a night and day difference.