Car Problem Reports

Cadillac Escalade Quick-Connect Fittings For Heater Hoses May Leak Engine Coolant

Cadillac Escalade Problem
5 Reports
Me Too

Model Years Affected: 1999, 2000, 2002, 2005

Average Mileage: 142,000 mi (134,000 mi - 150,000 mi)


The quick-connect fittings for the heater hoses tend to leak engine coolant. This problem commonly occurs because the metal housing has become brittle, which can break and cause leaks.

  • Visitor, , 134,000 mi

    Snap on split connector at firewall.

    Flag This
  • Visitor, , 150,000 mi

    After repeatedly needing to refill the coolant reservoir, looked for the source and easily found traces of coolant on transmission oil filler tube, directly below the quick connect fitting on coolant line going through firewall. The tee connector needed to be replaced.

    Flag This
Ask a Question