Removing Glow Plug controller

[jpowel29]

I am going to be deleting the glow plugs and would like to remove the glow plug controller and wiring to clear off more off on top of the motor. Are there any issues with removing the controller? Does it operate or send power to any other system on an LBZ that would need to be re-routed after removal?

 

[JoshH]

I thought I remember there being some injector information programmed into the GPCM. I'm not sure it will run without it, but I could very well be wrong.

 

[skidoorider800]

this is the first I have heard of anyone doing this. What are the benefits of doing so?

 

[jpowel29]

I thought I remember there being some injector information programmed into the GPCM. I'm not sure it will run without it, but I could very well be wrong.

Hmmm. I will see what more I can find out.

 

[duratothemax]

Im not sure if it will even run without a GPCM because it contains terminators for the high speed GMLAN bus.

 

[JoshH]

Here's what I was thinking of: http://www.duramaxdiesels.com/forum/showthread.php?t=6283

I'm still not sure if it will run without it.

 

[fishsmith]

Didn't Pat run into some problems with Casper when he swapped to Lbz because of the glow plug controller? I might be wrong though

 

[JD Dave]

I guess I should have looked into this further before I ordered delete plugs.

 

[JoshH]

I guess I should have looked into this further before I ordered delete plugs.

Deleting the glow plugs shouldn't be a problem. What I'm questioning is if the truck will run without the control module.

 

[jneal]

Last year when I deleted my glow plugs I also deleted the glow plug controller. It will run without it, but for reasons that I can't remember I put the controller back on, the little I do remember was I could never get a good log with the controller deleted.

 

[duratothemax]

Last year when I deleted my glow plugs I also deleted the glow plug controller. It will run without it, but for reasons that I can't remember I put the controller back on, the little I do remember was I could never get a good log with the controller deleted.

probably because it contains the 120ohm terminator for the HS GMLAN bus...

 

[buildingup]

Forgive me but what is the advantage of deleting the glow plugs? Does this not make it harder to start in colder weather and all? Again just trying to learn.

 

[x MadMAX DIESEL]

Some people have had the glow plug tips break off inside the cylinder

 

[jpowel29]

THanks for all the insights. Glow plugs go - controller stays.

 

[JD Dave]

THanks for all the insights. Glow plugs go - controller stays.

So are you going to just tie the wires up or cut them off?

 

[jpowel29]

The glow plug wires are coming off

 

[sweetdiesel]

Do the lbz have individual wires? To each glow plug?
OT I found out that lly plugs do not fit in a lb7

 

[MMLMM]

the big main connection plug on the front of the GPCM (red cable), remove that and truck wont run or start......

Also the Injector flow rates are stored in it...I think once there programed into the ecm that data in not always needed, but I wouldt understand why you really would want to remove it anyway...The GPs can be removed and the wires, but just leave the GPCM it only weighs like 1/2 lb.

 

[sweetdiesel]

the big main connection plug on the front of the GPCM (red cable), remove that and truck wont run or start......

Also the Injector flow rates are stored in it...I think once there programed into the ecm that data in not always needed, but I wouldt understand why you really would want to remove it anyway...The GPs can be removed and the wires, but just leave the GPCM it only weighs like 1/2 lb.

I would remove mine just for the clutter mike

 

[JD Dave]

I would remove mine just for the clutter mike

This is the main reason I wanted to do it but I'll just leave it now and loose the glow plug wires. I'm a little overwhelmed as of right now as I've never swapped a motor before. Good thing I'm not in a hurry.