Question about 2002 GMC Yukon XL
Front vents only blows cold air, rear vents operate correctly (blow hot and cold air based on setting). I have checked hoses running to heater and both, supply and return are fairly warm. Fuse for front heater is ok. Car has 102,000 miles and has gone through 100K service by the dealer in Dec.
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Posted on Jan 02, 2017
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