Question about GMC Cars & Trucks
You may have already checked this, but if not, I would recommend checking the reservoir for leaks when under pressure (while the vehicle is at normal operating temperature). To do this, let the engine reach normal operating temperature and with the hood open, idle the engine to about 2,500 RPM (which will increase pressure in the coolant system) if there is a leak, you should see it. If it is not a small leak somewhere, you may be looking at a more serious issue.
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Posted on Aug 01, 2013
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Posted on Jan 02, 2017
The central locking system is controlled by the ecu, simply a common fault, disconnect the passenger door terminal to the lock and see what happens if the other doors lock normally then this confirms that there could be a fault in the wiring loom or relay if the doors unlock after locking then its a ecu problem. See an auto electrician
Regarding the water consunption what colour is the oil hope its not cream, radiator cap may need replacing as it could be blowing the water out, if the reseviour bottle is always full then this confirms it..Hope this helps you out
Posted on Nov 16, 2008
SOURCE: overheating problem
looks like you have done everything but the problem with your car is that the cylider head gasket has gone have a look at the dipstick or remove the oil filler cap if it looks like mayo then 100% head gasket has failed you said no water on the floor so it must have gone into engine only way this can happen is head gasket failing, if you have put lot of water in to the cooling system then your sump will be full of oil water mix.
let us know your findings so we can help you more if you need it
Posted on Apr 22, 2009
SOURCE: coolant leaking on a4 2002 1.8t
If the coolant is droping on top of the trans, then it is the coolant flange located at the back of the engine then it is the coolant flange,like the person above mentioned. I had happen to my A4. The part is like $20 i believe if you get it yourself, plus new coolant, VW kind. Get the flange and a new o-ring do not try to re-use. There is a DIY for it if you google it : http://www.audizine.com/forum/showthread.php?t=84054. I chose to take it to a shop it was 2-3 hours labor. Just make sure they know what they are doing. The spot is a pain in the ***, and if you have big hands don't even think about it. Well worth the pay to a shop!
Posted on Jun 16, 2009
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