Hummer H2 2005 - Thermostat Change - It Could Improve MPG Dramatically !

The Hummer in this video was underheating by 5%, six months after changing the thermostat and monitoring the mileage, the results were startling, a massive 20% improvment in MPG ! Who would have thought that such a low-cost part would have had such a dramatic impact, so get your H2 temperature checked with a Diagnostic Tool, with the cost of fuel today it's worth it ! Here's a run through the steps required to change a thermostat. 00:00 - Thermostat Replacement 00:10 - Technical Data 00:36 - Thermostat Location 00:48 - Disconnecting MAF Sensor 01:12 - Engine Cover Removal 01:23 - Air Intake Removal 01:43 - Radiator Hose Access 02:04 - Skid Guard Removal 02:14 - Draining Bucket 02:50 - Coolant Draining 03:02 - Thermostat Removal 03:40 - Old Thermostat 04:23 - Thermostat Housing Inspection 04:47 - Water Pump Condition 05:14 - Water Pump Housing Cleaning 06:10 - Thermostat Housing Clean 06:15 - Housing Bolt Cleanup 06:42 - Bolts Cleaned 07:11 - New Thermostat Fit 07:46 - Thermostat Housing Re-fit 08:45 - Air Intake Re-fit 09:49 - Drained Coolant Measurement 10:53 - Coolant Top-up 11:35 - Engine Run Coolant Level Check 12:21 - Check for leaks 12:42 - Final Temperature Check 12:58 - Old Thermostat Analysis