Envoy 2WD V8-5.3L (2007)
Radiator Hose: Technical Service Bulletins
Cooling System - Inspecting Radiator/Heater Hose Clamps
INFORMATION
Bulletin No.: 06-06-02-014B
Date: June 13, 2008
Subject:
Inspecting Radiator and Heater Hose Clamps and Seals for Leaks During Pre-Delivery Inspection (PDI)
Models:
2007 Buick Rainier
2007-2009 Chevrolet TrailBlazer, TrailBlazer SS
2007-2009 GMC Envoy
2007-2009 Saab 9-7X
Supercede:
This bulletin is being revised to add the 2009 model year. Please discard Corporate Bulletin Number 06-06-02-014A (Section 06 - Engine/Propulsion
System).
The purpose of this bulletin is to inform dealers of required inspection of underhood and under vehicle radiator and heater hose clamps and seals for
leaks and/or seepage during pre-delivery inspection (PDI).
Field feedback indicates that some customers may notice engine coolant leaks shortly after delivery, which may result in an immediate decline of
customer satisfaction with their new vehicle purchase.
When performing a PDI on a vehicle listed in the models affected above, pay specific attention to the effectiveness of the engine coolant hose seal
locations. Reposition/reclamp or replace the clamp to effect a proper system seal prior to customer delivery.
Locations to Inspect During PDI
Dealership personnel should examine the following locations closely during PDI (4.2L LL8 application shown in graphics below; refer to SI for specific
information on 5.3L LH6 and 6.0L LS2):L LH6 and 6.0L LS2):
1.
Radiator inlet hose (upper hose) to radiator (1).
2.
Radiator inlet hose (upper hose) to engine (2).
