Have a 2500hd sierra 2005 oil pressure down in am after in warms up it has a high whine sound coming from front of truck

Asked by Oct 20, 2019 at 07:35 AM about the 2005 GMC Sierra 2500HD 4 Dr SLT Crew Cab SB HD

Question type: General

2500hd sierra 2005 low oil pressure in morning once it warms up runs good
but have high whine sound in front of motor

1 Answer

77,755

Low oil pressure when cold could just be an engine that's badly worn; loose bearings and/or oil pump going out. Whining could be a loose belt.

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