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1997 Chevy 1500 4.3L - Check Engine Error Codes

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Hey there,


I just purchased a 1997 Chevy 1500, the 4.3L model.

Its got about 150k miles on it, with a "recently rebuilt transmission".


Everything works well for the most part..


It doesn't start on the first turn of the key - you've got to do it a few times to get it to start.

The idle is a little rough at times - almost acting like the engine is going to die, though it never does.


Also, it has a bit of a rough transition between first and second gear sometimes..


So, I'm thinking a tuneup / o2 sensor / fuel filter..?


The codes I'm getting are:






Not sure what they mean.. Any thoughts?

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P0171 System too Lean (Bank 1)


P0300 Random/Multiple Cylinder Misfire Detected


P1870 Transmission component slipping


Check fuel filter and replace if necessary


Check fuel pressure and flow


I'd clean MAF and throttle body


Of course check plugs/wires

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