1950 GMC s10 chassis 4.8 LS pedal question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

suburban99 · 09-22-2022, 01:41 AM

Got my 50 GMC swap running and driving. What a blast to drive..
I have noticed that the Accelerater pedal is very touchy. Engine is a 2005 4.8DBW with a 4l60E. Blue and Green plugs on the PCM. Is their a way to adjust the pedal sensativity for lack of a better world with HPTuners? Tach module/pedal/ecm all from same donor.

**Accelo** · 09-25-2022, 01:55 AM

I don't know anyone that will mess with the pedal programing because of liability issues.
Can you extend the pedal so it's further from the pivot point. Should accomplish the same thing?

**The Rocknrod** · 09-25-2022, 07:03 AM

I've been reading online and find that 100% WOT at 1/2 throttle position would be scary indeed and more dangerous than normal. You would think an enterprising individual would come up with a fix.

**cdub2010** · 09-25-2022, 08:59 AM

I have the same issue on my 77 k25, way to much throttle way to early. Its a complete 2004 2500hd drivetrain swap. Its only real bad on bumpy roads when the truck bounces and my foot is resting on the pedal. Its not a daily so I havent seriously looked into it. I was going to call banks engineering to see if their pedal monster or theres another called pedal commander can adjust the pedal to make it less sensitive. All of them brag on more sensitive pedal to go fast. I Just the pedal to be more consistant i dont care about faster, its all ready to fast.

**biketopia** · 09-28-2022, 02:19 PM

I know you can re-scale the TPS input with Holley so like say 50% of pedal input is only 35% at the throttle body, and then ramps in at the end, guys do it all the time with their "street cars" with big power to keep from blowing the tires off just getting going. Not 100% sure with HP tuners if it's possible, but if you go the HP tuners site and peruse their forums it might help. Found this link https://forum.hptuners.com/showthrea...ponse-Try-this

09-22-2022, 01:41 AM	#1
suburban99 Registered User Join Date: May 2014 Location: Mission BC Posts: 452	1950 GMC s10 chassis 4.8 LS pedal question Got my 50 GMC swap running and driving. What a blast to drive.. I have noticed that the Accelerater pedal is very touchy. Engine is a 2005 4.8DBW with a 4l60E. Blue and Green plugs on the PCM. Is their a way to adjust the pedal sensativity for lack of a better world with HPTuners? Tach module/pedal/ecm all from same donor. Attached Images __________________ 1962 C10 Longbox LS 5.3 4L60E----Sold$$ 2014 Ram 4x4 3500 Laramie Diesel..Momma's truck 2015 Ram 4x4 1500 1997 Boxster. 1972 K10 Custom Deluxe LS 6.0 1950 GMC 3100 S10 & LS swapped

09-25-2022, 01:55 AM	#2
Accelo Senior Member Join Date: Mar 2015 Location: washington Posts: 2,296	Re: 1950 GMC s10 chassis 4.8 LS pedal question I don't know anyone that will mess with the pedal programing because of liability issues. Can you extend the pedal so it's further from the pivot point. Should accomplish the same thing?

09-25-2022, 07:03 AM	#3
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: 1950 GMC s10 chassis 4.8 LS pedal question I've been reading online and find that 100% WOT at 1/2 throttle position would be scary indeed and more dangerous than normal. You would think an enterprising individual would come up with a fix. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

09-25-2022, 08:59 AM	#4
cdub2010 Senior Member Join Date: Apr 2014 Location: detroit mi Posts: 209	Re: 1950 GMC s10 chassis 4.8 LS pedal question I have the same issue on my 77 k25, way to much throttle way to early. Its a complete 2004 2500hd drivetrain swap. Its only real bad on bumpy roads when the truck bounces and my foot is resting on the pedal. Its not a daily so I havent seriously looked into it. I was going to call banks engineering to see if their pedal monster or theres another called pedal commander can adjust the pedal to make it less sensitive. All of them brag on more sensitive pedal to go fast. I Just the pedal to be more consistant i dont care about faster, its all ready to fast.

09-28-2022, 02:19 PM	#5
biketopia Senior Member Join Date: Jul 2015 Location: Warrenton VA Posts: 1,106	Re: 1950 GMC s10 chassis 4.8 LS pedal question I know you can re-scale the TPS input with Holley so like say 50% of pedal input is only 35% at the throttle body, and then ramps in at the end, guys do it all the time with their "street cars" with big power to keep from blowing the tires off just getting going. Not 100% sure with HP tuners if it's possible, but if you go the HP tuners site and peruse their forums it might help. Found this link https://forum.hptuners.com/showthrea...ponse-Try-this __________________ 71 c-10 Long Bed, under the knife for a No Limit Engineering Wide Ride Chassis Pack and coil over static drop. 07 Silverado Classic 2wd 95 Camaro 427SBC/TH350

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