09 hhr panel after driving few miles and you come to stop car shakes an stalls I got codes for bank 1 sensor 2 o2 an fuel pressure nd fuel level sensor only codes I swap fuel pressure nd o2 sensor no difference gas mile is way down 19mpg an still does same thing any help codes just keep coming back

 

Exactly which codes did you get? A fuel level code? A fuel pressure code? An O2 code ? All these can be related or not.
If your pressure is low it’s most likely the fuel pump which can trigger the O2 sensor code.
it might be worth posting the exact codes , and just the code such as P0449 or what you see on the code reader screen, don’t worry about the description, we’ll figure that out for you.
Welcome to the site.

 

codes p013a p013b p0420 p0442 p0451 p0454 p0464 in that order

 

Has the ECM and/or the fuse box been touched?
Check fuse #33 under hood.
Check all of the wires for fraying or melting
The HHR only has 1 bank and #2 O2 sensor is after the cat. It is responsible for the P0420.
Check the ECM connector, the thing the fuel pressure and fuel level sensors have in common is low ref from the ECM. That is the tan wire on pin #24.
There is a chance that the cat is toast.

 

So I'm not mechanic lol when we say pin 24 we talking about connections at ecm correct?

 

yes. The ECM is the larger module under the Darth Vader hood.
The top connector:


Number 3 is the ECM:

 

Thanks I'll check connector nd wires see I'd I see anything corroded

 

And here’s a tip, tighten the 4 , 7 mm bolts in the fuse box, the 2 halves can vibrate loose and cause havoc with the connectors underneath

These 4 bolts, they need to be tight! Real tight!

 

When was the last oil change? The VVT solenoids may be clogged up

 

Still got 58% oil life bought car with 180k now has 183k cars had problem since I bought starts drives everything seems fine till car warm nd I drive few miles gas mileage way down an idle jumps about 100-200rpms at stops nd stalls if I sit at light too long and at 30-40mph car jumps an shakes like it's about to dead rpms jumping 200-300 at that speed nd shift points are not right as well