The car: 2004 Impala base model with the 3.4l, 106,700km (66,687 miles),
bought new 3 years ago. I'm the original owner and I followed all the
The problem: about 2 weeks ago I started hearing loud "water noises" coming
from the dash area when coming out of a stop light after waiting 30 seconds
or more, and during stop and go traffic. It's like the cooling system was
emptying itself a bit during the waiting time, and when pressing the gas to
go forward then the heater core would get filled up again.
The car doesn't overheat at all and it runs fine.
I went to the dealer today for regular maintenance and asked them to check
it out. They did the diagnostic and added some Dex Cool. The noise is
Great news? I'm not sure about that. They said the rear head gasket needs
to be replaced because it's cracked and the engine is blowing air into the
coolant. We can see whitish foam on top of the coolant in the expansion
tank. The service writer said they've seen that problem a lot and they
"know" it's the rear gasket.
The cost of the repair with everything they want to replace is $1137 CAD,
plus the oil change, plus taxes that's about $1340 Canadian, or $1230 USD.
OK are they trying to sell me some expensive repair or was topping off the
coolant the solution all along?
They said nothing about the "upper intake manifold and lower gasket issue"
that we hear about, only the rear head gasket.
Expert advice and opinions are greatly appreciated.