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Drives

Found 1 result

  1. Like many of you, I was affected by the faulty high pressure a/c hose design on my 2014 Silverado. Fortunately for me it was only February in Texas and I barely needed it. Even more fortunately though, I still had 80 miles left on my CPO warranty so I didn't have to haggle with the dealer about repair costs. We'll see how long my condenser cooperates as I figure it's next to go on the A/C system. While my truck was in the shop the dealer loaned me a fully-loaded (of course) 2018 Sierra with a 5.3 for a day. Once I got over the Sierra having just about every bell and whistle my rig didn't have, I noticed just how good the acceleration was compared to my truck. So much so that I was convinced that GM had bumped the horsepower/torque ratings between 2014 and 2018. Once I verified that they hadn't, I went on a fact finding mission to figure out why this truck drove like a beast on acceleration while mine felt like a 4 cylinder. I had researched buying a pedal controller to see if that would help my lousy tip-in on acceleration but simply could not justify the cost. I did know that I was tired of the lackluster get-up-and-go of the first 1/3 of the pedal travel of my truck--especially after my experience with this peppy loaner. The first modification I made to my truck after buying it was to shim under the lower portion of the metal assembly that the accelerator pedal attaches to as I had been following this forum and knew it had been identified as a problem. I opted for using half of a clothespin which took 99% of the flex out of the pedal assembly, so I knew that was not my problem. Instead, I crawled under my loaner 2018 Sierra's dash and took a picture of the part number on the gas pedal assembly--it was GM# 23362231. Once I got my truck back, I peeked at the number on its pedal assembly and it was GM# 20972082. After some research I could not determine when this older number got superseded, but I knew if the price was right I'd buy the new part number and see if it helped my truck. I picked one up off a well known auction site for about $54 and installed it the day I got it. I waited almost two months to share this because I wanted to verify that it improved my acceleration for real and not just in my imagination. I can definitively say, for my truck, that the initial acceleration has improved noticeably. I will even go so far as to say that the low-speed transmission shifts that seemed to startle the truck into what I would call "panicked shifting" garbage-truck-style have improved about 80%. Once I get a my valves cleaned by a shop that has the BG cleaner I think it will accelerate like the 2018 I was loaned. The swap of the pedals is pretty simple. Two 10mm bolts on the lower left and upper right as shown in the attached picture. A 1/4 inch deep well socket with a small extension did the trick. The upper right bolt is a bit of a stretch but not too bad.I unplugged the old one and plugged in the new one and put the bolts back in. I did not do a side-by-side multi-meter test of these pedals to verify the voltages with pedal travel because I did not have an electrical diagram of the several contacts in the wiring harness connector on the pedals. I started to try and it was simply futile. So I just installed the new part and took it for a test drive. To repeat, the new GM Part Number is 23362231 and it worked for my 2014 Silverado with the 5.3. I hope that these results can be duplicated (and enjoyed) by you folks in the forum. I like my truck a lot better now since this "upgrade." If anyone else tries this, please report your results!
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