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Water Pump Replacement Hello all - about ready to tackle the water pump replacement on my 02 Denali. I have a small coolant leak - and determined the fluid was coming from the weep hole on the water pump. Any recommendations for brand of pump to get? Should I replace the thermostat and belt...

Curious to see if you think p0171 and p0174 would be caused by a faulty fuel pump in an 02 Yukon Denali. Again, a local mechanic told me O2 sensor or fuel filter. The truck does start hard in the extremely cold temp. Thanks for any help!