LBZ: truck wont start

[ncdmax03]

I got in my 06 this morning and it wouldn't do nothing. the indicator light under the gears in the cluster wasn't on so I checked all my plugs and still nothing I got these sode off of it p0504,u0106,u0101,p0672,p0676,p0678. I checked the plug going into the tcm and every thing is tight. not sure what happened.

 

[Dirtbag]

Batteries ok?

 

[ncdmax03]

yea they are old but they been doing fine you thing I need to change them ?

 

[paint94979]

Try it

 

[ncdmax03]

whats a good battery to put in it

 

[paint94979]

After my experience its hard to beat acdelco

 

[x MadMAX DIESEL]

I wouldn't go out and buy a new battery yet. Not if it hasn't had trouble in the past, seems like a waste of money to me.

 

[ncdmax03]

Ok well new batteries wouldnt crank it so iam still in the same boat

 

[bigjake18]

Take your Tcm out and slightly tap it and plug it back in. Then cycle the key really fast a few times then try to crank it over. Had the same problem like 2 months ago. I lost communication to my ECM and Tcm due to my Tcm messing up

 

[ncdmax03]

Still wouldnt do nothing would it be the plug on the back of the trans

 

[bigjake18]

If your indicator light isn't working my guess would be the Tcm over all is bad if all plugs are good

 

[ncdmax03]

ok I tried to scan it with v2 and it wont read it

 

[paint94979]

Time to check fuses... IIRC look at the PCM fuse.

 

[x MadMAX DIESEL]

Cig fuse is the obd 2 fuse

 

[ncdmax03]

I can read the ecm but it wont read the tcm

 

[paint94979]

Cig fuse is the obd 2 fuse

If its just the cig fuse why wouldn't the truck start...

 

[x MadMAX DIESEL]

I thought he wasn't getting v2 power when he said "it won't read"

 

[ncdmax03]

so where do I need to go from here?

 

[paint94979]

Check fuses all of them

 

[ncdmax03]

they all were good