For a little background, it has been raining here steadily for the past week. Some days hard and some just a drizzle.

Yesterday morning I went out to the truck to go get some breakfast with the fiancee when my CEL was on. I scanned the truck with HPTuners and had these codes come up:

[PCM] P0380
[PCM] P0540
[TCM] u1255
[TCM] u1255
[TCM] u1000
[TCM] u1155
[TCM] u1155
[TCM] c0306
[TCM] c0327
[TCM] c0359
[TCM] c0379
[TCM] c0550
[TCM] u1301

Most of the codes (if not all) were History - Immature/Pending. I tried clearing them and the PCM codes stayed off, but my TCM codes remained.

Also, about a month ago or so, the truck would not shift into 4 gear at WOT. I was told to change my fuel filter, but haven't gotten a chance to do it yet. I didn't know if the codes were related. I hope it's just a lose connector or a blown fuse. Does anyone have any idea where I'd start?

Any input is greatly appreciated.

TIA

Gabe

the 306-550 codes are tranfer case control module. there is a bulletin on water intrusion, from the windsheild.
the 0540 is intake air heater voltage incorrect.
the 380 is glow plug voltage code.
the u codes are communications codes.
which code was current, the cel would not come on for a history code. one of them was current.

Well, the CEL hasn't come back on since last night when I reset it. I am still throwing codes though. (Same ones) I do occasionally get the P0380 for the glow plug heater malfunction. I recently had a new one put in under warranty. That is the only code that is pending. All the rest are immature/history.