I have a 2008 Tahoe with about 196,000 miles, never ran hot well kept. The engine is building up pressure and blow both hoses from the heat pump. I put the truck in the shop the first picture is the driver side and and picture number 2 is the passenger side.Question, do I just replace the heads and head gaskets or just replace the motor? If I must replace the motor any idea as to where I should start looking? Also has anyone else with an 08 Tahoe with 5.3 l engine and high miles had similar issues? Third option, just go and buy a 2015 Tahoe. I love my 08 but I have kids and need to be safe.