Bench harnesses wanted. Where to go?

I had a hard time with a LBZ and it was suggested to me to get a bench harness. It was the weirdest thing where I could communicate and pull out the factory program in the accessory (one click forward) position, but no luck programming the truck in any key position.:confuzeld I am interested in all the different engine model harnesses if available.

Thanks,

Mark

Ask Guy tripp, i saw he had one in this months issue of diesel Power.

Mark,
What I did was buy the http://www.speartech.com/ LS1 harness to use on the LB7, buy the ECM connectors, pins for the LLY and LBZ and wired it all together. Works for all 3 controllers.:rockit:

Bench harnesses wanted. Where to go?

I had a hard time with a LBZ and it was suggested to me to get a bench harness. It was the weirdest thing where I could communicate and pull out the factory program in the accessory (one click forward) position, but no luck programming the truck in any key position.:confuzeld I am interested in all the different engine model harnesses if available.

Thanks,

Mark

Mark,
Might want to check with Brayden. He may be able to help.
Ed

Mark,
What I did was buy the http://www.speartech.com/ LS1 harness to use on the LB7, buy the ECM connectors, pins for the LLY and LBZ and wired it all together. Works for all 3 controllers.:rockit:
Do you happen to have the part numbers for the connectors and pins? Or, do you not buy them from GM and get them from somewhere else like an electronics store? I will call speartech back. They did not know what I needed for the Duramax. Thanks for the help!

Mark

Get the LS1 harness, $135.00 from Speartech, I found it easier to add a second data link connector ( 12110250) to use with the LBZ, terminals for the connector, Terminal/tray: 12129484/19. LBZ connector 88988935. This connector takes 2 types of pins. Terminal/tray 1928498059/24 and Terminal/tray 1928498135/19. LLY connector 88953346, use the LLY pins for dsp.
You'll need to go to the dealer and hope you have a good contact in the parts department. The need to check the Kent-Moore terminal trays for the terminal/tray #'s
LBZ pin out
C2 -- OBDII
P1 -- P16 pos. Batt. Voltage
P2 -- P 5 and P 4 GND
P9 -- P 2 Serial Data Class 2
P21 -- ignition switch on
P44 -- P14 – GMLan High Speed Serial Data
P57 -- P 6 + GMLan High Speed Serial Data

Hope this helps

Hope this helps

Oh yea. ;) :thankyou2

Mark
Check this thread http://dieselplace.com/forum/showthread.php?t=138168

has the picture for the LBZ pin-out.

The LBZ harness is up and running and works great! I have the connector for the LLY. Can you give me the pin map for that? Would it be a good idea to have a third OBD2 connector and use each type separate?

Thanks!

When is the party?

The party is getting more and more expensive every step of the way! I thought soon, but weren't we just in Indy a few days ago? Where has time gone??? :crazy:

The LB7 and LLY are on the same OBD2, The LBZ is on a separate connector. If you can put them all on 1 connector, Do it!

EFILive has the the bench harness info here http://download2.efilive.com/Tutorials/PDF/Bench%20Harness%20Tutorial.pdf

Hope this helps :)

The LBZ harness is up and running and works great! I have the connector for the LLY. Can you give me the pin map for that? Would it be a good idea to have a third OBD2 connector and use each type separate?

Thanks!

There's nothing wrong with using the same DLC Connector... I have LLY/LS2/P12, LS1/LB7, 5 & 6 Speed Allison controllers all wired into the same DLC, and everything works fine.

The LB7 and LLY are on the same OBD2, The LBZ is on a separate connector. If you can put them all on 1 connector, Do it!

EFILive has the the bench harness info here http://download2.efilive.com/Tutorials/PDF/Bench%20Harness%20Tutorial.pdf

Hope this helps :)