Common area of coolant leak on GM 3.1l / 3.4l v6 engines.
Coolant leak area under throttle body near thermostat housing. 3.1 and 3.4 v6 engines.
Common coolant leak areas on lower
intake of 3.1 and 3.4 GM engines.
1- Behind the power steering pump,
leaks down where intake meets
cylinder head.
2- Near coolant temp. sensor, and
around lower intake bolt.
Note: throttlebody and exhaust
crossover removed for easier viewing.
Click on a picture for larger view
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Comments
12-14-10
MY 1999 CHEVY  BOUGHT NEW HAS LESS THAN 50,000 MILES    JUST GOT THE BAD
NEWS IT NEEDS  NEW  ENGINE HAD ANTI FREEZE LEAK  I UNDERSTAND IT IS A
COMMON PROBLEM   DOES  g m  DO ANYTHING TO HELP DEFRAY THE COST?
.This is a very common problem, but GM does not offer
any reimbursement for this repair.
I have used a product called therm-a-gasket with great
sucess
12-14-10
MY 1999 CHEVY  BOUGHT NEW HAS LESS THAN 50,000 MILES    JUST GOT THE BAD
NEWS IT NEEDS  NEW  ENGINE HAD ANTI FREEZE LEAK  I UNDERSTAND IT IS A
COMMON PROBLEM   DOES  g m  DO ANYTHING TO HELP DEFRAY THE COST?
10-18-11
I had problems with my 3.1 in a malibu and had intake gasket job done for $700. 60 days
later it appears to be leaking behind the timing cover? did they take that apart to fix the
intake?
Doing the intake manifold gaskets would have nothing to
do with the front timing cover gasket leaking. These are
a little common on high mileage cars, but  not nearly as
much as the intake gaskets.
2-9-12
Clear sticky fluid leak on garage floor every morning & my coolant is low. Have a
2008 GM pickup