cooling system pressure

  1. Joseph Thomas

    Need Help. 2011 Tahoe cooling system will not pressurize.

    I have a 2011 Chevy Tahoe LTZ with a 5.3 and it has just over 122,000 miles. I noticed that there was an issue a few weeks ago when I had the heater on, and it was set to 75 degrees. It was blowing warm for about a few minutes, then it turned cold. I then turned the heat up to 90 and it blew...

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