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.
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.
around lower intake bolt.
Note: throttlebody and exhaust
crossover removed for easier viewing.
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 success |
| 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. |
| 6-28-12 I HAVE A 2002 CHEVY MALIBU THAT LEAKING COOLANT FAST FROM ONE OF THE PULLEYS. HOW DO I KNOW IF ITS THE WATER PUMP |
| Anywhere besides LIM, head gasket, oil cooler, or cracked head or block that would cause oil to mix with coolant? Or vice versa. Cannot find the leak? Help! |
| Nope. Nothing else that would cause the mixing. |
| The water pump is in the lower location of picture #1 above. A small black plastic cover is over the belt on that pulley. Water pumps usually sling coolant over all pulleys. Odds are it is the water pump. |
| My 1997 grand am 3.1 has a leak on the fire wall left of the heater core lines. Above a/c compressor. What bolt is that and what do i need to fix it? |
| Okay now you are really confusing me. You say the leak is on the firewall near the heater core lines, and above the A/C compressor. The the A/C compressor is not on the firewall. What do you mean by asking what bolt that is. There are thousands of bolts. |
| My car is a Chevy Malibu 99 2.4 engine and is leaking water almost from the middle what could cause this. |
| Could be the water pump if it is more toward the passenger side. Or the coolant outlet housing if on the drivers side. |
| I have a 2003 Impala with the 3400 engine. I have not had the usual problem with the leaking gaskets, probably because I changed the original coolant long ago. However, I seem to have a constant corrosion problem. Heavy Iron Oxide buildup in the cooling system, even with anti-freeze. Any ideas what this may be? I flushed the system less than a year ago and I am currently flushing again after a water pump replacement and I would feel better if I knew what this problem was. |
| The Dexcool is known for doing that. If you changed the gaskets a long time ago, they may be leaking. No gasket out is a permanent fix. Sometimes they leak internally, slowly and cause this problem. Also the rear headgasket may be leaking internally pushing combustion gases into the cooling system. Remove the #1 spark plug from the passenger side of the rear head and look for corrosion. |
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Coolant Leaks On The GM 3100 (3.1) and 3400 (3.4L) Engines
