2004 Chevrolet Tahoe Questions

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I only had mixed gas for a weed eater with me I put some of it in my Tahoe. Then got to gas station added fuel drove a lil ways it did same thing. Hooked to computer and got the following codes what do they mean? Ui255 xfer, PO 336, po 174, po 171, po151?

Just changed the oil 4 weeks ago.

The engine light came on as I started my vehicle yesterday morning. The engine is running smoothly, all the gauges are within an acceptable range, vehicle hasn't stalled

The light truns on right after we trun on the car

light continues to be on even though it has been reset.

60 side won't go down anymore. I see where the cable broke. Can it be fixed?

Change control arms and I changed twice, but can not find the problem, it thumps when ever l go over a bump but if pull a trailer or a load no noise, what could it be?

I drove it 4 different times and at 1st it happen to the back now the front on passanger side. Now can't go but about 8 blocks and if I let it idle after about 20 mins. It locks won't turn over.

Hose is still cold. Shouldn't both hoses be hot? Has enough coolant. Actuator door bad? But hoses would still be hot? Could water pump be bad? Not leaking.

Hose is still cold. Shouldn't both hoses be hot? Has enough coolant. Actuator door bad? But hoses would still be hot?

Truck stated driving funny bout 500 miles ago im sitting at 163k now ive had it since 132 SES blinking light threw up a lost communication code took it tohop got the guy to clean the throttle body was told to do the ignition switch turn over 5x then drive to restet idle now it idles rough when during still air sounds like it goes from blowing full blast to half then full again.seems like it shifts too early and the back heater now won't work. The truck from a dead stop will roll up to about 20 mph n shift a gear all by itself without ever pushing the gas pedal. Local Chevy dealer wants to charge me $275 plus tab just to read the cides if any still in the bc last time we checked there was none. Im a single mother and it seems like every sho wants to trade me for every for I have and still not fix it. I just don't understand why these ppl think bc im female idk what is going on. Just replaced fuel filter and air filter. Guy said before he could do an alignment he had to balance tires and order and put on new pinman and idle arms. Somebody please help. It sometimes smells like it's burning oil and I smell antifreeze sometine's too but no oil or coolant on ground. Brakes have about half pad left rotor probably could use a turning but it doesn't want to stop. Im just so overwhelmed. Plz help with any information please!! , Robin