H3 L5-3.7L (2007)
Coolant Reservoir: Customer Interest
Cooling System - Coolant Leaks On Rough/Steep Terrain
Bulletin No.: 06-08-43-007
Date: November 10, 2006
TECHNICAL
Subject:
Coolant Container/Bottle Leaks on Rough Terrain or at Steep Angles (Install Updated Washer/Coolant Container and New Washer Pump Connectors)
Models:
2006-2007 HUMMER H3 Built Prior to VIN Breakpoint 78135604
Condition
Some customers may comment on engine coolant seeping from the coolant container/bottle while driving on rough terrain or at steep angles.
Cause
The coolant reservoir design may allow some coolant to back up into the reservoir and leak from the coolant overflow when driving off-road.
Correction
Install an updated windshield washer/coolant container assembly and new washer pump electrical connectors following the steps below:
Open the hood.
Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in SI.
Remove the two washer solvent container bolts (1) shown in the graphic above.
Remove the lower coolant reservoir bolt.
Disconnect the rear washer pump electrical connector.
Disconnect the front washer electrical connector.
Tip
