2006 Montana SV6 Coolant Crossover Pipe

[kmacks27]

I have been searching the internet and can't find a thing. Has anyone changed there coolant crossover pipe gaskets ? What are the part numbers and how hard would this repair be to do my self. I have the 3.5L motor
Thanks for any help

[kmacks27]

If it helps anyone else this is what I found out about the problem.


Subject: Coolant Leaking from Engine (Replace Coolant Crossover Pipe Gaskets)


Models: 2006-2007 Buick Terraza

2006-2007 Chevrolet Impala, Malibu, Monte Carlo, Uplander

2006-2007 Pontiac G6, Montana SV6

2006-2007 Saturn Relay

2007 Saturn AURA

with 3.5L or 3.9L Engine (VINs N, K, I, R, W -- RPOs LZ4, LZE, LZ9, LZ8, LGD)


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 current service replacement gaskets, P/Ns 12577704 and 12590668. Before installing the new gaskets, make sure that the mating surfaces on the crossover manifold and cylinder head are completely clean and that NO OIL or OIL RESIDUE exists.

Parts Information
Part Number
Description
Qty

12577704
Gasket, Coolant Crossover Pipe
1

12590668
Gasket, Coolant Crossover Pipe
1