Having problems with your 2000 Chevrolet Silverado 1500 ?
Heater not working. top heater hose hot but the other one cold.
Then, absent a valve in the line, your core is blocked. swapping it out is an involved process and you will need a repair manual. they can be had cheap on ebay or for the price of paper at your library.
Repair Help & Product Troubleshooting for 2000 Chevrolet Silverado 1500
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