how does a blown-up cooler damage a power steering pump? on 2006 GMC Sierra 1500

My 2006 Sierra 150 truck was fine at midnight, but when I went to drive it in the morning the power steering would not work. The mechanic says the damage was done by a blown "cooler", but I did not have any overheating problems going to my appointment. Only had hard steering problems.

by in Derwood, MD on January 23, 2013
1 answer 2 comments
ANSWER by on January 23, 2013
Perhaps your truck has a oil cooler for the power steering system. The mechanic that is working on your truck should be able to clarify this for you.
COMMENT by on January 23, 2013
AGREE WITH MILES
COMMENT by on January 23, 2013
Hey Greg.....your a agreeable guy today...Thanks...