answersLogoWhite

0


Best Answer

Bad hose or clamp where the heater core is connected would be the most likely problem.

User Avatar

Wiki User

13y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: 1999 GMC sierra leaking coolant at firewall?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Coolant leaking from part on passenger fender wall of 1999 Chevy Astro. need part name?

It could be the coolant overflow tank that is leaking.


What is the probable cause of coolant leaking behind the engine in a 1999 s-10?

Intake manifold gasket


Where is temperature sensor on 1999 Volkswagen Passat?

It's on the rear coolant flange way in the back by the firewall.


What is wrong if have to keep refilling coolant 1999 subaru legacy?

bad hose, radiator leak, leaking into engine.


1999 Tahoe and the passenger floor board keeps getting wet what do you think is wrong?

The heater is leaking coolant.


What would cause your 1999 Dakota to all of a sudden start leaking coolant?

sounds like water pump.check radiator hoses as well


I have had my water pump replaced on my 1999 Buick Century. Why would it be making a bubbling noise and leaking coolant?

You need to have a cooling system pressure test to determine as to where it is leaking now. Repair the leak and it should be okay.


You have transmission fluid leaking from your coolant line on a 1999 GMC 2.2L Sonoma The line is properly flared but it will not stay tight in the fitting?

Replace the fitting.


Why do i have antifreeze leake in my cadilliac engine 1999?

Several possibilities: 1. Radiator is leaking. 2. Coolant hose is leaking. 3. Hose clamp is loose. 3. Seal on water pump is leaking. 4. Overflow container is leaking. 5. Radiator clamp is loose or bad. Two highest possibilities: Radiator or hose is leaking.


What are the symptoms your heater core is going bad on a 1999 Monte Carlo LS?

Coolant leaking onto the floor of the passengers side or out drain tube for a rupture no heat for a blockage.


When was Sierra Sciences created?

Sierra Sciences was created in 1999.


Where is the coolant temp sensor on a e46 318i 1999 bmw?

Standing in front of the car looking at the engine the coolant temp sensor is located on the right hand side of the cylinder head at the back towards the firewall under the inlet manifold.