had p0251 which is cp3, truck randomly shuts down even on the interstate!has done it several times in a week or so going to dealer tonight,Then today p0299 low boost, around 55k stock motor (qaud xzt from 10k to 20k ) or so Just asking for any thought or insight?

 

truck now wont shift right and can only hit maby 60,and takes for ever to do that.

 

Maybe the Throttle Position sensor. Have also heard that the crank sensor may cause it in a few other posts.

Hopefully the dealer can find the problem....

 

Crawl up under the truck and look at the A/C compressor. There's a wiring harness running right next to the compressor, make sure it's not chaffing and shorting against the housing.

MikeyB