I am now in <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:State><st1:place>Colorado</st1:place></st1:State> and my truck is starting this new thing. It is cold about 30 in the morning. When i start the truck it misses very badly. The needle jumps about 3 or 4 hundred rpm's. After a few seconds it goes into high idle mod and it will not miss much when it is in high idle. After it worms up it is ok. Is this normal should i be worried about this? It also is very jumpy when in gear at ideal also when I am just moving down the street with out my foot on the gas until it worms up.<o:p></o:p>

hmmm... i dont think so? i start mine up 20-25deg each morning and she purrs like a kitten.

What year is the truck? How many miles?

if you ahve an 04.5 lly, try to get the the PCM reflashed.

It is a 05 lly with 7,000 miles. I got it at the end of november 04.

I was told there was no reflash for my truck it was to new.

I also noticed the same thing. Southern Louisiana and at between 25 degrees and 34 start it up and it sounds like an old 6.5 thats been sittin for a month. Once high idle is engaged its ok. I just assumed it was normal.

I also noticed the same thing. Southern Louisiana and at between 25 degrees and 34 start it up and it sounds like an old 6.5 thats been sittin for a month. Once high idle is engaged its ok. I just assumed it was normal.
I am asking a tech. I do not think it is normal. I have had a few more things go wrong in the last few days and i know they are not normal.

Read this thread.

http://www.dieselplace.com/forum/showthread.php?t=23377