Question about 2003 Saturn VUE
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Posted on Jan 02, 2017
I would recommend factory parts only for this application. Find a Saturn dealer and ask for the thermostat housing, and it should include the thermostat. It is an updated part due to the thermostat sticking issue. As far as replacing it, the thermostat is below the upper and lower intake manifold. You need to pull the upper manifold up out of the way. To do this remove the 6 T-30 bolts holding it in place. There is a connector they will be below the intake on your right, this needs to be unplugged before pulling the intake up too far. The lower intake may have internal or external torx bolts depending on the year and date produced. Remove all 12 bolts and pull the lower intake out and the thermostat will be on your left, between the cylinder heads near the timing belt cover. There is a solid tube that connects the upper radiator hose to the thermostat housing, it is attached to the engine by an external torx bolt near the oil dipstick tube. Remove the hose from the transfer tube, then unbolt the tube and twist back and forth to remove. DO NOT pry on the bolt flange of the tube this will break off and then you will need a new tube. Keep twisting and pulling and the tube will come out. Once the tube is out simply unbolt the thermostat housing and install the new one. A couple tips for this, one is don't drain all the coolant, just remove the upper radiator hose from the transfer tube and drain whatever comes out of there. Draining all the coolant will introduce alot of air into the cooling system which will be tough to remove. All the air has to be out or the engine will over heat. You will only need maybe half a gallon of coolant if this procedure is followed. I also usually over fill the coolant a little to allow for any air trapped in the system to escape with out lowering the coolant level far enough to turn the low coolant light on. The labor for this job is about 2.5 hours for a professional, if you haven't done much work before allow at least double that to complete this job. Hope this helps.
Posted on Dec 17, 2008
Here is the definition of the code in GM manual:
P0128 - Coolant Thermostat Below Thermostat Regulating Temperature, this indicates the engine is running cold, u need a thermostat
Posted on Feb 12, 2009
P1599 IS A STALLING ISSUE COULD BE BAD GAS / BAD FUELPUMP DIRTY FUEL FILTER
DISCONNECT BATTERY AND SEE IF THE LIGHT COMES ON AGAIN
U2107 HAS SOMETHING TO DO WITH THE COMPUTER LOOSING POWER AT THE BODY MOUNTS CHECK CABLES AND GROUND STRAP
Posted on Mar 02, 2010
IMPORTANT: Actuator blade within ignition module housing must be in ACC position to install lock cylinder assembly. If rotated, replace it to ACC position, using needle nose pliers.
Posted on Apr 07, 2010
Testimonial: "Great information! Thanks for the help. Now I can get the ignition rekeyed to match the doors after the dealer changed the switch."
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