Question about 2008 Cadillac STS
1. Look for where it is leaking from.
2. If the leak is not visible or is very slow try a radiator stop leak fluid.
3. Otherwise replace seal, hose, or whatever is leaking.
Posted on Nov 27, 2014
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Posted on Jan 02, 2017
Chances are its the seals or rust. Check the top and see if it has any gaps... It may just be able to be repaired with a bead of caulk
Posted on Dec 06, 2009
i just had one in the shop last wed, replaced the high pressure power steering hose. but it can also leak from the pump, the return line , or the steering gear, you will have to have it looked at to be certain
Posted on Jan 04, 2010
The most common overheating problem with the Northstar engine is a blocked purge line(small hose).The purge line is designed to purge air out of the cooling system.
There is a small diameter hose coming from near the top of the coolant tank (not the cap) ,this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.
If the hose is clear, check for blockage at the nipple on the tank.Or trace the hose back until you find the blockage.
The hose goes in to the engine to a crossover and comes out the other side close to the thermostat housing,the blockage may be there.
Posted on Jul 02, 2010
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