Anonymous posted an answer for this 1999 Chevrolet Silverado 1500:
"your fuel pump is bad. Even if you have pressure. had the same problem and did not..."
Anonymous posted an answer for this 1999 Chevrolet Silverado 1500:
"flush the heater out with a hose. the fastest and cheapest. if that dosen't work..."
Anonymous posted an answer for this 1999 Chevrolet Silverado 1500:
"I had the same problem that I just fix by flushing the heater core out with a hose...."