Impala V6-3.5L (2008)
Coolant Line/Hose: Customer Interest
Cooling System - Coolant Leaking from Engine
TECHNICAL
Bulletin No.: 07-06-02-006D
Date: May 17, 2010
Subject: Coolant Leaking from Engine (Replace Coolant Crossover Pipe Gaskets)
Models:
2006-2007 Buick Terraza
2009-2010 Buick Lucerne
2006-2007 Chevrolet Monte Carlo, Uplander
2006-2010 Chevrolet Impala, Malibu
2006-2007 Pontiac Montana SV6
2006-2009 Pontiac G6
2006-2007 Saturn Relay
2007-2009 Saturn AURA
2008-2009 Saturn VUE
with 3.5L or 3.9L Engine (VINs N, K, I, R, W - RPOs LZ4, LZE, LZ9, LZ8, LGD)
Supercede:
This bulletin is being revised to add the Saturn VUE. Please discard Corporate Bulletin Number 07-06-02-006C (Section 06 - Engine/Propulsion
System).
Condition
Some customers may comment on coolant leaking from the engine.
Cause
The gasket located between the coolant crossover pipe and the front of the right (rear side) cylinder head may be leaking.
Correction
Replace the coolant crossover pipe gaskets with updated service replacement gaskets. There are three coolant crossover designs. The second design
crossover started during the 2008 model year. The second design crossover has an access hole for a cylinder head plug on the rear bank (bank 1). This
crossover uses the three mounting hole gasket. The two examples below use the three hole gasket.
The first design crossover does not have a hole in the bank area of the crossover. This crossover uses the four mounting hole gasket.
