1999 GMC Savana 3500 Replace thermostat

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What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 1999 GMC Savana 3500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 1999 GMC Savana 3500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

pushrodon Oct 13, 2017

Scanner - live data - will monitor engine temperature so it can be compared to the gauge. Has the thermostat actually been replaced??? Coolant at proper level? Radiator cooling fan operating correctly? When does this happen - highway speeds - idling at stop light etc.. ?