Duramax Diesels Forum Truck of the Week
  #31  
Old 11-13-2015, 09:13 AM
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clrussell clrussell is offline
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Originally Posted by vcr View Post
The lbz accelerator petal makes the reduced engine power light go out. But it will not bolt up properly to the firewall. Back to square one on that issue.

Southwest Ga

You have to have the lbz bracket assembly too. Then it will bolt up. I ordered all new from my gm parts supplier


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01 ext cab, Billet ihi, trans with g converter, sac 45s, tap shift, lots of black, everything built by myself with help from some of the best in the buisness.

Thanks to everyone on this forum who has helped me and those whom I bought parts from.

Special thanks to Evan, James, Russell, Mark and all the others I'm forgetting.
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  #32  
Old 11-13-2015, 09:28 AM
vcr vcr is offline
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That is my problem. Another internet point for you. I am off to see if I can track one down
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  #33  
Old 11-13-2015, 12:39 PM
vcr vcr is offline
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How did you route the wires from the lbz pedal to motor bay?
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  #34  
Old 11-13-2015, 12:43 PM
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Originally Posted by vcr View Post
How did you route the wires from the lbz pedal to motor bay?

I found one of the grommets and pulled it through like factory


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01 ext cab, Billet ihi, trans with g converter, sac 45s, tap shift, lots of black, everything built by myself with help from some of the best in the buisness.

Thanks to everyone on this forum who has helped me and those whom I bought parts from.

Special thanks to Evan, James, Russell, Mark and all the others I'm forgetting.
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  #35  
Old 11-13-2015, 05:30 PM
vcr vcr is offline
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At the end of the day here is what I have accomplished. I swapped the oil pressure sensor. That solved the oil pressure problem. I incorrectly re-pinned the obd port with the two new wire from the harness. That caused a few issue. But I sorted them out. Now at the end of the day here are the only two issues left to solve

Alternator is not charging. Here are the codes

P0622 generator f terminal Circuit

P0621 Generator L-terminal circuit


Fuel gauge is backwards
P2068 fuel level sensor 2 circuit high voltage


If I can get these solved everything will be done
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  #36  
Old 11-13-2015, 05:36 PM
CarolinaHD CarolinaHD is offline
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Quote:
Originally Posted by vcr View Post
At the end of the day here is what I have accomplished. I swapped the oil pressure sensor. That solved the oil pressure problem. I incorrectly re-pinned the obd port with the two new wire from the harness. That caused a few issue. But I sorted them out. Now at the end of the day here are the only two issues left to solve

Alternator is not charging. Here are the codes

P0622 generator f terminal Circuit

P0621 Generator L-terminal circuit


Fuel gauge is backwards
P2068 fuel level sensor 2 circuit high voltage


If I can get these solved everything will be done

Quote:
Originally Posted by clrussell View Post
Alternator charging is operating system issue in the ecm. No real fix for that other than jump a key hot wire to the brown wire on the alternator. This will also eliminate 2 of your codes I'm pretty sure. (Both alternator codes)

Fuel gauge will have to be rescaled using efi live.


Post the rest of your codes and we can see if they are related. I would bet your trans is in limp mode because of a wiring issue.

Are you using lbz/ allison trans?

Where you located?


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LBZ CCSB 4x4
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2003 C&C lb7/zf6
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  #37  
Old 11-13-2015, 08:29 PM
vcr vcr is offline
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Ok. Got it. Tomorrow I will wire a key on power source to the alternator and see if that solves those issues
I contacted Ben about sorting out the fuel issue. I think he can get it to read correctly.

Another issue I noticed tonight was that when in reverse the backup lamps don't come on. Any thoughts?
I have switched to the six speed Allison trans along with the lbz engine
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  #38  
Old 11-13-2015, 08:37 PM
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The wiring I did solved the alternator issue. It's been that way for 6k now with no problems.

He had to rescale my fuel gauge too. He can get that taken care of


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01 ext cab, Billet ihi, trans with g converter, sac 45s, tap shift, lots of black, everything built by myself with help from some of the best in the buisness.

Thanks to everyone on this forum who has helped me and those whom I bought parts from.

Special thanks to Evan, James, Russell, Mark and all the others I'm forgetting.
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  #39  
Old 11-14-2015, 09:57 PM
vcr vcr is offline
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Can you give me a brief description of how you wired up your alt?

I took the truck out for the first test drive with lbz/six speed. Everything went well. It is very different from the lb7/five speed. Way different. Totally different driving experience.


Thanks again for all your help with this swap. It would have been in the shop for another week without your helpful insight. I really appreciate it.

Last edited by vcr; 11-15-2015 at 06:35 AM.
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  #40  
Old 11-15-2015, 07:30 AM
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I found a key hot fuse in the underhood fuse box, then used an "add a circuit" from the parts store that ties into that fuse.

I then used that to energize a relay I set up.

Ran the power out from the relay to the brown wire on the alternator and tied into it.


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01 ext cab, Billet ihi, trans with g converter, sac 45s, tap shift, lots of black, everything built by myself with help from some of the best in the buisness.

Thanks to everyone on this forum who has helped me and those whom I bought parts from.

Special thanks to Evan, James, Russell, Mark and all the others I'm forgetting.
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  #41  
Old 11-17-2015, 05:16 PM
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Ok thanks. I wired up the alternator. This has the dtc for the alternator handle for now. A little disappointed that that I had to do it this way but it will work for now.

I called Paul from duramaxtuner.com and told him my concerns about loading his tunes on top of the already modified ecm from bt dieselworks. He had me read and save the base tune from the ecm then email it to him. Then he emailed me a dsp5 tune file back that I could load straight onto the ecm. The new tunes, once loaded, took care of the intake air grid heater code. Thumbs up to duramaxtuner. They listen to my issues and fixed me right up. All within about an hour.

The issue I can't seem get any traction on is the reverse lights failing to come on when I put the truck into reverse. If anybody has any ideas please let me know
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  #42  
Old 11-17-2015, 06:23 PM
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Good to hear you got most of it worked out! I'm in the same boat on the alternator situation, oh well..

I'll try to remember to look at a schematic tomorrow on the reverse lights


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01 ext cab, Billet ihi, trans with g converter, sac 45s, tap shift, lots of black, everything built by myself with help from some of the best in the buisness.

Thanks to everyone on this forum who has helped me and those whom I bought parts from.

Special thanks to Evan, James, Russell, Mark and all the others I'm forgetting.
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