DBW pedal question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

87chevy.com · 07-28-2011, 11:50 PM

Just wondering if it makes a difference between what pedal I use if I use a DBW throttle body. I have not picked up my donor motor, but I will have to use an F-body intake... my latest project is LS into a e46 (bmw). The bmw had a DBW system already, pedal assembly has the same wire diagram as the truck, 2 potentiometers, low voltage reference, 5v and signal... Just wondering if anyone has mix mached TB and Pedal before... not sure if I can modify the BMW pedal to make it cable..?
clint

Ackattack · 07-29-2011, 12:52 PM

I highly doubt a BMW pedal would work with a GM engine.

I've even heard that its best to use the gas pedal and TAC module from the same vehicle.

87chevy.com · 07-30-2011, 12:46 AM

Im sure it wont work, but I wonder what the differences are? they both have the same wiring signals on paper... hurm... to make things easier, I'll give up the thought and headach and just figure out how to get a regular cable gas pedal fitted and looking good in there

clint

BR3W CITY · 07-30-2011, 02:23 PM

just get a gm pedal and tac assembly that match and use the dbw throttle body. No reason to convert to DBC just because your bimmer pedal won't work.

Because of how particular the dbw systems are, I would be surprised if the pedal was compatible. However BMW has sourced parts from the GM catalog before so I wouldn't rule 100% against it. I'd like to hook it up to a tac and tb and see how it reacts. Maybe there could be a breakthrough for the bmw swap guys.

**TR65** · 07-30-2011, 04:36 PM

87,

I used a GM pedal, same year, etc. The ECM set a code that basically said, "I ain't gonna run this engine with that pedal". I had to get an exact match for the ECM / Engine.

Anyone need a pedal? I don't know what it would work on.

Good luck,

TR

mcbassin · 07-31-2011, 11:49 PM

What if you don't know what model engine you have? I was told mine is a 2003 but I was also told it was a 5.3 it turned out to be 4.8. Is there are way to know which DBW pedal it takes? What does the TAC module box look like anyone have a pic? thanks

ls1nova71 · 08-02-2011, 03:44 AM

Quote:

Originally Posted by mcbassin

What if you don't know what model engine you have? I was told mine is a 2003 but I was also told it was a 5.3 it turned out to be 4.8. Is there are way to know which DBW pedal it takes? What does the TAC module box look like anyone have a pic? thanks

It doesn't matter as much what engine you have. The TAC and pedal and throttlebody need to match the PCM/tune. Google the service number on the PCMand it should give you a year, or check the VIN in the PCM to find out. Then get a marching TAC and pedal. The TAC is a little plastic and metal (or all plastic it depends on year) box about 1x4x6 inches with 2 plugs on it. Look at the second post in the" show your Ls engine bay" thread, and you can see mine mounted to the firewall about where the distributer should be.
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Chevy4Life · 08-03-2011, 07:32 PM

There is some good DBW info here:
http://ls1tech.com/forums/conversion...silverado.html

usmcchevy · 08-03-2011, 10:14 PM

Quote:

Originally Posted by mcbassin

What if you don't know what model engine you have? I was told mine is a 2003 but I was also told it was a 5.3 it turned out to be 4.8. Is there are way to know which DBW pedal it takes? What does the TAC module box look like anyone have a pic? thanks

Best pic I have of my TAC.

mcbassin · 08-03-2011, 10:59 PM

Thanks guys. I need all the help I can get. this ls stuff is pretty foreign to me. I'm pretty sure I have one of those boxes. Maybe all I need is the pedal?

07-28-2011, 11:50 PM	#1
87chevy.com BMW & ASE Master Certified Join Date: Feb 2004 Location: Houston, Texas Posts: 1,266	DBW pedal question Just wondering if it makes a difference between what pedal I use if I use a DBW throttle body. I have not picked up my donor motor, but I will have to use an F-body intake... my latest project is LS into a e46 (bmw). The bmw had a DBW system already, pedal assembly has the same wire diagram as the truck, 2 potentiometers, low voltage reference, 5v and signal... Just wondering if anyone has mix mached TB and Pedal before... not sure if I can modify the BMW pedal to make it cable..? clint __________________ 1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress

07-29-2011, 12:52 PM	#2
Ackattack Senior Member Join Date: Aug 2002 Location: Valley Center KS Posts: 3,524	Re: DBW pedal question I highly doubt a BMW pedal would work with a GM engine. I've even heard that its best to use the gas pedal and TAC module from the same vehicle. __________________ Project Bruiser: 68 Pro-Touring C-10 5.3L / 4L60E Project Ironhide: 97 GMC Crew Cab 4x4 Cummins SOLD: '69 GMC 1/2T SWB TBI'd: Project No Buck Assembly Manual Index Sign up Thread!!! Factory Service Manual Index

07-30-2011, 12:46 AM	#3
87chevy.com BMW & ASE Master Certified Join Date: Feb 2004 Location: Houston, Texas Posts: 1,266	Re: DBW pedal question Im sure it wont work, but I wonder what the differences are? they both have the same wiring signals on paper... hurm... to make things easier, I'll give up the thought and headach and just figure out how to get a regular cable gas pedal fitted and looking good in there clint __________________ 1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress

07-30-2011, 02:23 PM	#4
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: DBW pedal question just get a gm pedal and tac assembly that match and use the dbw throttle body. No reason to convert to DBC just because your bimmer pedal won't work. Because of how particular the dbw systems are, I would be surprised if the pedal was compatible. However BMW has sourced parts from the GM catalog before so I wouldn't rule 100% against it. I'd like to hook it up to a tac and tb and see how it reacts. Maybe there could be a breakthrough for the bmw swap guys. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

07-30-2011, 04:36 PM	#5
TR65 Senior Member Join Date: Nov 2007 Location: Greenville, SC Posts: 873	Re: DBW pedal question 87, I used a GM pedal, same year, etc. The ECM set a code that basically said, "I ain't gonna run this engine with that pedal". I had to get an exact match for the ECM / Engine. Anyone need a pedal? I don't know what it would work on. Good luck, TR __________________ 1965 C10 SWB Fleet Two owner LS2 Swap Thread http://67-72chevytrucks.com/vboard/s...d.php?t=413880

07-31-2011, 11:49 PM	#6
mcbassin Still Learning Join Date: Jul 2009 Location: Central Oklahoma Posts: 10,108	Re: DBW pedal question What if you don't know what model engine you have? I was told mine is a 2003 but I was also told it was a 5.3 it turned out to be 4.8. Is there are way to know which DBW pedal it takes? What does the TAC module box look like anyone have a pic? thanks __________________ Mike "69 Short Wide" My Project 86 Silverado Landen's Project Instagram: @mcbassin My Website C/10 Club Oklahoma Facebook Group

08-03-2011, 07:32 PM	#8
Chevy4Life Senior Member Join Date: Feb 2003 Location: Las Vegas, NV Posts: 749	Re: DBW pedal question There is some good DBW info here: http://ls1tech.com/forums/conversion...silverado.html

08-03-2011, 10:59 PM	#10
mcbassin Still Learning Join Date: Jul 2009 Location: Central Oklahoma Posts: 10,108	Re: DBW pedal question Thanks guys. I need all the help I can get. this ls stuff is pretty foreign to me. I'm pretty sure I have one of those boxes. Maybe all I need is the pedal? __________________ Mike "69 Short Wide" My Project 86 Silverado Landen's Project Instagram: @mcbassin My Website C/10 Club Oklahoma Facebook Group



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