Replaced the water pump, thermostat and fan clutch.
SOURCE: 1999 Chevrolet Silverado 1500 Fuel Pump
check the connector to the fuel pump for corrosion or loose pins, the fuel pumps of newer cars and trucks are designed to last at least 100,000 miles, when the new pumps quit did u verify they had power to them?
SOURCE: where is the fuel pump shutoff switch located on a 1996 chevy silverado 1500 located
Should be on the passenger side kickplate below the glovebox and to the right. You may have to remove the plastic panel to access it or look for a small hole in it and feel around for the button
SOURCE: No heat on 1996 Chevy Silverado 1500
reverse the heater hoses and drive it for a cpouple of days your heater core is plugged and by reverseing them you can back flush the heater core after 2-3 days reverse them again
SOURCE: 2003 chevrolet silverado v8 1500 with code 430
P0430 - Catalyst System Efficiency Below Threshold (Bank 2)
Basically this means that the oxygen sensor downstream of the catalytic converter on bank 2 is detecting that the converter is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.
Symptoms: You will likely not notice any drivability problems, although there may be symptoms such as a rough/hard idle when cold.
Causes: A code P0430 may mean that one or more of the following has happened:
* The catalytic converter is no longer functioning properly
* An oxygen sensor is not reading (functioning) properly
* There is an exhaust leak
Possible Solutions: First, inspect for exhaust leaks.
Next step is to measure the voltage at the oxygen sensor on Bank 2. In fact, it would be a good idea to test each oxygen O2 sensor while you're at it.
One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It's worth checking into.
Hope helps (remember to rate this answer).
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