2000 GMC C3500 What is leaking coolant under intake

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What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 2000 GMC C3500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

pushrodon Aug 1, 2014

See if one of the heater hoses hooks up on the passenger side rear of the intake manifold... Some did, can't remember the years exactly... But that may be where it's leaking! ... Either way... CHECK the heater hoses!