Re: 3500 overheating
You mentioned changing the waterpump. You may want to check that they gave you a reverse rotation one.
I had my son pick up a pump for his truck several years back and the guy sold him one for a normal rotation pump. He even argued there was no difference in them when I had him take it back.
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76/77/78 Cheyenne
1997 K3500 454 soon to be 496
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