I just want to thank everyone for the input. Finally got the truck out of my shop after about a week of on and off testing and finally found that the problem was a fuel quality issue it had an alcohol content of 34% and that was the problem all along.

looks like the whole left bank has random misfires.

MAF is good.I read somewhere that there may be an issue with sticking valves just wondered if anyone else has seen or heard of that?

It is a 6.0 gas engine and only fault codes I get are p0300

I have a 2003 Chevy 2500 HD with 6.0 liter engine; when I first crank it up, the truck skips and doesnt want to accelerate and also wants to spit back through intake. But when engine warms up it seems to run fine. I have checked fuel quality, pressure, coolant sensor and everything else I can think ...

Replaced ign. coil and van has done great.thanks for all the help and feedback.

The pcms are coming from chrysler dealer.After i put them in the vehicle will crank and run good for a few days.I drove the van 53 miles before giving vehicle back to customer last time.I had found at one of the injectors the wire casing was gone on both wires at the inj. plug thought that was it bu...

3 new pcms

Checked 5 volt reference to all sensors listed and all are ok seems to be losing ground but when i scan the vehicle all pids are ready correctly.Also keeps giving IAT code. have checked wiring from all sensors to pcm and all are ok.

I've got a 2000 Sunfire with a radio in deep lock. We've attempted the 2-3 procedure to pull codes for unlock but without success. Left ignition on with jump pack for 1 hour to pull radio out of deep lock...still no success. This vehicle has been in and out of the shop with a mysterious battery dyin...

I have a 2001 grand caravan sport with a 3.3 seems to keep killing pcm.

Keeps giving tps, coolant sensor, a/c pressure switch and IAC valve codes. I have checked wiring harness and all seems to be okay.

Any help with this would be appreciated.