One problem related to coolant leaking has been reported for the 2007 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 GMC Yukon based on all problems reported for the 2007 Yukon.
Gradual coolant loss over time with no evidence of leak found. Took it to the dealer and they said that the head was porous. My extended insurance is not honoring the claim because gm has a bulletin #06-06-01-019b. The cylinder head assembly has a defected casting manufactured by castech. Why no recall?.