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2000 Z71 OBS, 5.7L. About six months ago I installed a new OEM fuel pump. About two months ago I got in the truck, engine cold, turned the key, engine would try to start, then die. Tried this multiple times, finally it started and have not had any start issues until yesterday. Drove to the...

I have a 2000 Z71, 5.7. About 4 months ago I had to replace the fuel pump. Worked great until a month ago, now when I turn the ignition on, I can't hear the pump run and the first start of the day takes a little longer than usual. All starts after that are normal, pump still doesn't come on, but...

I have a 2000 Tahoe Z71 5.7L OBS with a P0420 code. Scanner says it is a catalyst issue. I have two catalysts, one with an O2 sensor on the engine side of the catalyst, the other with an O2 sensor on the muffler side of the other catalyst. Any thoughts on which catalyst, or could it be one of...

I have a 2000 Z71 OBS with rear AC. The rear AC blows cold, but the front doesnt, barely cool. So the problem would appear to be some component particular to the front AC system. Air blows well out of the dash outlets, blower motor works on each setting from hi to low. All fuses good, compressor...