I Scanned It And All It Says Is Bank 1
Bank 2 Pending. What This Meens I Do Not Know.
The Truck Rides Perfect No Problem At All.
Someone Help Thanx.

P0171 OBD-II Trouble Code
Technical DescriptionSystem Too Lean (Bank 1)

What does that mean?Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.

Note: This DTC is very similar to P0174, and in fact your vehicle may show both codes at the same time.

SymptomsYou will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.

CausesA code P0171 may mean that one or more of the following has happened:

The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters (K&N, etc.) can cause the MAF to become dirty if the filter is over-oiled
There could be a vacuum leak downstream of the MAF sensor.
Possible SolutionsPossible solutions include:

In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
Inspect all vacuum and PCV hoses, replace if necessary
Check for a dirty fuel filter and proper fuel pressure

Not enough fuel or too much air on that bank of the engine.
A bank being either the front or back of the engine assuming a v6.

Likely problem areas? Busted vacuum line, clogged injector(s), actual bad o2 sensor.

A competent shop can isolate the cause fairly quick with a up to date scan tool.

Those are Oxygen Sensor codes that are pending. It is what they call a "soft code" In other words, your car is fine. Clear the code and keep driving.