Data link connector?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

HotRodPayne · 10-03-2013, 09:10 PM

Has any one added a Data link connector to your truck harness?

ls1nova71 · 10-03-2013, 10:02 PM

Pretty sure almost everyone has, what's your question?

HotRodPayne · 10-03-2013, 10:04 PM

Did your harness come with it or did you add it?

68GMCCustom · 10-03-2013, 10:28 PM

my custom harness had one

BR3W CITY · 10-04-2013, 01:31 PM

If by data link you mean obdII, then you pretty much require one. No way to tune it without getting into the pcm.

ls1nova71 · 10-04-2013, 05:39 PM

The ALDL connector is part of the dash harness in a factory vehicle, if you're modding a factory engine harness to stand alone, then you will have to add it. Its pretty simple just a constant power a couple of grounds and a single data wire to the PCM.

HotRodPayne · 10-04-2013, 06:55 PM

Quote:

Originally Posted by ls1nova71

The ALDL connector is part of the dash harness in a factory vehicle, if you're modding a factory engine harness to stand alone, then you will have to add it. Its pretty simple just a constant power a couple of grounds and a single data wire to the PCM.

Thank you

Root2812 · 10-05-2013, 11:21 PM

Quote:

Originally Posted by ls1nova71

The ALDL connector is part of the dash harness in a factory vehicle, if you're modding a factory engine harness to stand alone, then you will have to add it. Its pretty simple just a constant power a couple of grounds and a single data wire to the PCM.

Could you tell us which wires? I have the 5.3 and I want to modify my harness. You said a single data wire but I see data wires for blue pin outs 14, 15, and 58. 58 says data to obd2 but the others say data too. What do th other two do? Please clear this up for me. I used this http://www.lt1swap.com/99-02_vortec_pcm.htm

Thanks

ls1nova71 · 10-06-2013, 09:50 AM

Quote:

Originally Posted by Root2812

Could you tell us which wires? I have the 5.3 and I want to modify my harness. You said a single data wire but I see data wires for blue pin outs 14, 15, and 58. 58 says data to obd2 but the others say data too. What do th other two do? Please clear this up for me. I used this http://www.lt1swap.com/99-02_vortec_pcm.htm

Thanks

What year is your 5.3? The 14 and 15 are for 2000-2002 drive by wire harnesses,. I believe they may go to the TAC module, but I'm out of town at the moment and can't check for sure. But anyway, the 58 dark green wire is the one that goes to the ALDL, at least on a 2000-2002.

Root2812 · 10-07-2013, 11:29 PM

Quote:

Originally Posted by ls1nova71

What year is your 5.3? The 14 and 15 are for 2000-2002 drive by wire harnesses,. I believe they may go to the TAC module, but I'm out of town at the moment and can't check for sure. But anyway, the 58 dark green wire is the one that goes to the ALDL, at least on a 2000-2002.

Thanks. Mine is a 2000 drive by cable. I want to do my own harness modification but the 3 points that I am most confused on: the OBD2 (is ALDL the same thing?), check engine light, and electric fans. My motor has a mechanical fan that has to go for clearance.

I hope extending the topic isn't thread jacking

BigRed76 · 10-13-2013, 07:33 PM

I'm not trying to hijack this thread, but I just want to clarify all of the necessary wires for the DLC. This diagram from AllData (for 2000 5.3) shows pin 4 being a ground, and then pin 5 being a PCM ground. Can these just be the same body ground? The only wire I have from the PCM for the DLC is the dark green serial data wire, which will be pin 2 on the DLC.

clinebarger · 10-13-2013, 07:48 PM

The Grounds can be connected to any good body ground, You have everything else figured out.

BigRed76 · 10-13-2013, 09:50 PM

Thanks clinebarger

10-03-2013, 09:10 PM	#1
HotRodPayne Registered User Join Date: Apr 2013 Location: Midlothian Posts: 42	Data link connector?? Has any one added a Data link connector to your truck harness?

10-03-2013, 10:02 PM	#2
ls1nova71 Registered User Join Date: Dec 2009 Location: Independence Mo Posts: 4,119	Re: Data link connector?? Pretty sure almost everyone has, what's your question? __________________ 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

10-03-2013, 10:04 PM	#3
HotRodPayne Registered User Join Date: Apr 2013 Location: Midlothian Posts: 42	Re: Data link connector?? Did your harness come with it or did you add it?

10-03-2013, 10:28 PM	#4
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 3,848	Re: Data link connector?? my custom harness had one __________________ Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken

10-04-2013, 01:31 PM	#5
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Data link connector?? If by data link you mean obdII, then you pretty much require one. No way to tune it without getting into the pcm. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

10-04-2013, 05:39 PM	#6
ls1nova71 Registered User Join Date: Dec 2009 Location: Independence Mo Posts: 4,119	Re: Data link connector?? The ALDL connector is part of the dash harness in a factory vehicle, if you're modding a factory engine harness to stand alone, then you will have to add it. Its pretty simple just a constant power a couple of grounds and a single data wire to the PCM. __________________ 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

10-13-2013, 07:33 PM	#11
BigRed76 Registered User Join Date: Jan 2010 Location: Loveland, CO Posts: 1,921	Re: Data link connector?? I'm not trying to hijack this thread, but I just want to clarify all of the necessary wires for the DLC. This diagram from AllData (for 2000 5.3) shows pin 4 being a ground, and then pin 5 being a PCM ground. Can these just be the same body ground? The only wire I have from the PCM for the DLC is the dark green serial data wire, which will be pin 2 on the DLC. Attached Images __________________ Zach 1970 Chevrolet Custom Camper K20 1971 GMC Super K2500, 12V/NV4500 swap in progress 1971 Chevrolet Custom C10 1972 Chevrolet Custom Deluxe C20, 5.3/4L60E 1972 Oldsmobile Cutlass Supreme, 455/TH400, 3.73 posi 2004 GMC Sierra 2500HD, LB7/Allison, CCSB 2005 GMC Sierra 1500, 5.3/4L60E, CCSB

10-13-2013, 07:48 PM	#12
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: Data link connector?? The Grounds can be connected to any good body ground, You have everything else figured out.

10-13-2013, 09:50 PM	#13
BigRed76 Registered User Join Date: Jan 2010 Location: Loveland, CO Posts: 1,921	Re: Data link connector?? Thanks clinebarger __________________ Zach 1970 Chevrolet Custom Camper K20 1971 GMC Super K2500, 12V/NV4500 swap in progress 1971 Chevrolet Custom C10 1972 Chevrolet Custom Deluxe C20, 5.3/4L60E 1972 Oldsmobile Cutlass Supreme, 455/TH400, 3.73 posi 2004 GMC Sierra 2500HD, LB7/Allison, CCSB 2005 GMC Sierra 1500, 5.3/4L60E, CCSB

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