Having problems with your 2004 GMC Sierra ?
The oil looks good. its not milky. one person thought that the antifreese was entering in through the exahst and getting burned up. my guess is this slugde pluged the oil pump. if i have to change a gasket on the head and oil pump would i be better off replacing the engine?
I think i would go with the new engine
Repair Help & Product Troubleshooting for 2004 GMC Sierra
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