Okay this vehicle has always been dependable for me, always starts, never fails, till now. I was driving down the freeway, and got a sudden loss of power, pulled over and it stalled. since that time, at first it sounded like it wanted to, but just wouldn't.

So, I found out my valve cover gasket blew, dumping a lot of oil down into my sparkplugs. I have already done the following:

Cleaned all the oil out of the sparkplug chambers
Changed the valve cover gasket
Changed the Cam shaft position sensor
Changed all the sparkplugs (with pretty good ones)
Changed the throttle body gasket
Replaced coil packs with 2 NEW coil packs (v6)

All It does is backfire when trying to start it, but it will not start... Any ideas? Was thinking maybe the ignition module, but not sure at this point. Any help would be greatly appreciated.

 

Mileage. Is it the 3.0 V-6 ?

 

It is a 3.0L V6 AWD Mileage is 135K.

Also just did a crankshaft sensor.

 

Best guess is timing belt jumped time

 

I agree sounds like the timing belt, time to investigate. These are valve benders if the belt breaks.

 

Another vote for timing belt. Got a buddy with a Chevy that didn't have a clue about lining up his timing marks, replaced his timing belt and now needs a new engine. He had it so far out of time, that it cracked a piece off #1 piston and completely disintegrated #3. Put a bore scope down the engine to look at the cylinders and the only thing in #3 is the connecting rod and wrist pin moving up and down as you turn the engine over. I've NEVER seen anything like it.