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02-18-2012, 07:21 AM | #1 |
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Speedometer output question on a6.2L 6L80E ?
I did a swap in my 67 Suburban last summer with a 6.2/6L80E from a 2010escalade , everything worked out GREAT...
except I have no speedometer... I`m going to use an electric speedo but I`m not sure where to grab the output from. From what i see the original output would been came from the BCM to the factory cluster. Does anyone know if there is an ECM output/pin that an aftermarket speedo can read?
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1967 GMC Suburban, Supercharged 6.2 LS with a 6l80e , my 11 second tow vehicle! *pic in my profile* 1987 GMC CrewCab Dually 6.0 LS/6L90e, new tow pig. http://67-72chevytrucks.com/gallery/...=74049&cat=500 |
02-18-2012, 02:40 PM | #2 |
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Re: Speedometer output question on a6.2L 6L80E ?
Alot of the newer gm cars and trucks use the BCM for ALOT of things, gauges, cruise control, A/C ext. With out it, it can be hard to hook up those things. I know of people who have been trying to bypass it for A/C and cruise in a GTO motor swap for a long while and to my knowledge no one has been able to pull it off as of yet.
That said, if you're going to be using aftermarket gauges, some you can tap directly off of the VSS, however 'sometimes' it will give an interference in the speed signal to the PCM. Posted via Mobile Device
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
02-18-2012, 04:43 PM | #3 |
Has more rust than truck...
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Re: Speedometer output question on a6.2L 6L80E ?
X2, I originally tapped into the high side of the VSS for my speedo. Trans would act very funny when I hooked the speedo up. Hooked it to the PCM output and everything has been fine since.
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02-18-2012, 09:26 PM | #4 |
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Re: Speedometer output question on a6.2L 6L80E ?
6L80E/6L90E transmissions dont have a external VSS sensor, The ECM doesnt have a VSS output curcuit.
The VSS signal is sent on a "high speed serial data line" by the TCM to several modules. Ive only done one LS/6 speed auto swap......Im not an expert......The car had a late 8.8" Ford diff with a ABS speed sensor on it, I used that sensor to run a aftermarket speedo, It worked...so I used it. Im curious if anybody has another way also? |
02-18-2012, 10:55 PM | #5 |
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Re: Speedometer output question on a6.2L 6L80E ?
Easiest way I can think of would be to get a Speedhut GPS speedo.
Posted via Mobile Device
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
02-19-2012, 05:48 PM | #6 |
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Re: Speedometer output question on a6.2L 6L80E ?
Is getting a BCM from a simular truck (2010 Escalade), an option to get a vss output. I might be able to get cruise control, tow/haul mode to work?
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1967 GMC Suburban, Supercharged 6.2 LS with a 6l80e , my 11 second tow vehicle! *pic in my profile* 1987 GMC CrewCab Dually 6.0 LS/6L90e, new tow pig. http://67-72chevytrucks.com/gallery/...=74049&cat=500 |
02-19-2012, 06:13 PM | #7 |
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Re: Speedometer output question on a6.2L 6L80E ?
That's totally possible, just more wiring. That's what I would so if it were mine.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
02-19-2012, 07:49 PM | #8 |
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Re: Speedometer output question on a6.2L 6L80E ?
Cruise isn`t that important to me, be nice to say it has it. But i know the tow/haul mode would be really useful pulling my monte on the trailer.
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1967 GMC Suburban, Supercharged 6.2 LS with a 6l80e , my 11 second tow vehicle! *pic in my profile* 1987 GMC CrewCab Dually 6.0 LS/6L90e, new tow pig. http://67-72chevytrucks.com/gallery/...=74049&cat=500 |
02-20-2012, 01:57 PM | #9 | |
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Re: Speedometer output question on a6.2L 6L80E ?
Quote:
On a side note, I spent a week in the Greenpoint part of Brooklyn last year and didn't see but one or two old cars the whole time I was there, where do you guys hide them at???
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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02-20-2012, 05:25 PM | #10 |
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Re: Speedometer output question on a6.2L 6L80E ?
I reworked the harness that came with the engine i bought, it was like new condition,
(2010 engine). I mounted the ecm under the dash and cut most of the harness to fit. Wiring isn`t a problem and i have a friend thats good with the HP tuner. I will hit the yards to try to get a 2010 bcm. If you pass my shop we always have something kool parked outside, even kooler stuff inside. Thanks for your help.
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1967 GMC Suburban, Supercharged 6.2 LS with a 6l80e , my 11 second tow vehicle! *pic in my profile* 1987 GMC CrewCab Dually 6.0 LS/6L90e, new tow pig. http://67-72chevytrucks.com/gallery/...=74049&cat=500 |
05-05-2012, 10:10 AM | #11 | |
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Re: Speedometer output question on a6.2L 6L80E ?
Quote:
Posted via Mobile Device
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Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
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05-07-2012, 08:55 AM | #12 |
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Re: Speedometer output question on a6.2L 6L80E ?
Thanks for interest, especially knowing the stuff that you`ve built. It`s was mostly just a drivetrain swap/upgrade this time around, the truck has been together a really long time. Thanks again.
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1967 GMC Suburban, Supercharged 6.2 LS with a 6l80e , my 11 second tow vehicle! *pic in my profile* 1987 GMC CrewCab Dually 6.0 LS/6L90e, new tow pig. http://67-72chevytrucks.com/gallery/...=74049&cat=500 |
01-17-2013, 07:12 PM | #13 |
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Re: Speedometer output question on a6.2L 6L80E ?
I am in the planning stage of my L76 swap for my 85 Scottsdale. I would love to use the BCM so I can have auto headlights, delayed dome, perimeter lights, tow/haul, Bose radio maybe even remote start from a factory key fob if possible.
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04 Yukon XL 2500 w/ Quadrasteer 61 Chevy C60, 261 inline six 86 Chevy C20 2wd, Banks 6.2 05 GMC Sierra 2500hd Duramax |
01-21-2013, 09:28 AM | #14 |
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Re: Speedometer output question on a6.2L 6L80E ?
Did I get this figured out?
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Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
01-21-2013, 08:51 PM | #15 |
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Re: Speedometer output question on a6.2L 6L80E ?
No, decided to go with a GPS type set up. I picked up a BCM that came with the connectors because of the Tow/Haul option but I`m still not sure if i can get a speedo output from the BCM. The 2010 cluster uses the data line to get the signal for the speedometer.
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1967 GMC Suburban, Supercharged 6.2 LS with a 6l80e , my 11 second tow vehicle! *pic in my profile* 1987 GMC CrewCab Dually 6.0 LS/6L90e, new tow pig. http://67-72chevytrucks.com/gallery/...=74049&cat=500 |
01-26-2013, 04:01 PM | #16 |
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Re: Speedometer output question on a6.2L 6L80E ?
If you don't want to use GPS gauges, Speedhut makes CAN BUS gauges now, check this out. http://www.speedhut.com/gauges/freedom-gauges/36:5
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
01-26-2013, 09:51 PM | #17 |
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Re: Speedometer output question on a6.2L 6L80E ?
Good stuff LS1nova, thanks. I need to see if they offer a 4 1/2 speedo that works with the bus/can set up.
I`ve seen your build thread on LS1 tech, nice piece.
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1967 GMC Suburban, Supercharged 6.2 LS with a 6l80e , my 11 second tow vehicle! *pic in my profile* 1987 GMC CrewCab Dually 6.0 LS/6L90e, new tow pig. http://67-72chevytrucks.com/gallery/...=74049&cat=500 |
01-26-2013, 10:12 PM | #18 |
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Re: Speedometer output question on a6.2L 6L80E ?
Thats cool! I Wonder if Dakota Digital is working on something like this?
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Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
01-26-2013, 11:08 PM | #19 |
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Re: Speedometer output question on a6.2L 6L80E ?
I think so. I actually saw this on LS1Tech, and thought of this thread right off. Someone on there said that DD is working on the same thing.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
01-26-2013, 11:15 PM | #20 | |
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Re: Speedometer output question on a6.2L 6L80E ?
Quote:
http://67-72chevytrucks.com/vboard/s...d.php?t=561770 Posted via Mobile Device
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Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
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01-26-2013, 11:23 PM | #21 | |
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Re: Speedometer output question on a6.2L 6L80E ?
Quote:
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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01-26-2013, 11:30 PM | #22 |
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Re: Speedometer output question on a6.2L 6L80E ?
Oooooppssss!!!
Meant this: http://www.dakotadigital.com/index.c...rod/prd752.htm Posted via Mobile Device
__________________
Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
01-27-2013, 03:35 PM | #23 |
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Re: Speedometer output question on a6.2L 6L80E ?
Looks like they have an interface that will work with any electric speedo n tach.
http://www.dakotadigital.com/index.c...rod/prd825.htm
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1967 GMC Suburban, Supercharged 6.2 LS with a 6l80e , my 11 second tow vehicle! *pic in my profile* 1987 GMC CrewCab Dually 6.0 LS/6L90e, new tow pig. http://67-72chevytrucks.com/gallery/...=74049&cat=500 |
12-25-2013, 02:24 PM | #24 |
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Re: Speedometer output question on a6.2L 6L80E ?
Any updates?
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Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
12-26-2013, 09:45 AM | #25 |
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Re: Speedometer output question on a6.2L 6L80E ?
I installed a Dakota Digital VHX Series dash made for the truck and used their bus/cans interface. I absolutely love it! You can pull up all kinds of info on the dash just like a scanner. It shows 1/4 mile times that are dead-on (mph and e.t.) Sorry I didn`t install one sooner.
Happy holidays!
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1967 GMC Suburban, Supercharged 6.2 LS with a 6l80e , my 11 second tow vehicle! *pic in my profile* 1987 GMC CrewCab Dually 6.0 LS/6L90e, new tow pig. http://67-72chevytrucks.com/gallery/...=74049&cat=500 |
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