GMC 1994 Yukon - Cleaning Your Diesel Engine

Before closing the hood, be sure all filler caps are on properly. Pull down
the hood and close it firmly.
Cleaning Your Diesel Engine
I NOTICE:
If you spray or pour water or any other liquid on your engine
when it
is warm or hot, or when it is running, you could cause
serious damage to it.
If you ever clean the engine, clean it only
when it is cold.
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