Question about 2007 Pontiac Grand Prix GXP Sedan
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Posted on Jan 02, 2017
as you face the engine the thermostat bell is on the right (drivers side) Follow the radiatoe hose. Remove the two bolts and raise the bell still attatched to the hose. the thermostat is there with the rubber seal. You can gently pry the thermostat out with a screwdriver or something similar. Put in new thermostat be sure it is the same as the old one, and then replace or change the seal (be sure it is the smae size and thickness as the old one as I got the wrong size from Napa) Then replace the bell, and tighten, but not over tighten. I hope this helps!
Posted on Jan 31, 2009
If its the 3.1L it could be your intake manifold gasket , the material used for the gasket does not react well with GM's Dex-Cool antifreeze. The leak may not be apparent at first, but I would pressure test the cooling system. If you look at the front of the motor by the belts , try to peek down at the intake manifold and check for slight seapage to an obvious leak.
If its either of the Quad-4's they were notorious for heads warping or cracking.
Posted on Feb 03, 2009
SOURCE: 1998 pontiac grand prix starter
disconnect the negative battery terminal first then disconnect the positive treminal so there are no accidents, raise the car safely go underneath & remove the starter cover should be 3 10mm bolts holding the cover on then remove the 2 through starter bolts 15mm then disconnect the + battery cvable from starter then disconnect the solenoid wire should be a 7 mm bolt. good luck
Posted on Sep 11, 2009
CHANGE THERMOSTAT.MOST OF THE TIME THERMOSTAT WILL CAUSE OVERHEATING.CHECK YOUR COOLANT MAKE SURE ITS NOT LOW.HAVE COOLANT FANS CHECK TOO SEE IF THEY TURNING ON.GET A DIAGNOSTIC SCANNER HOOK UP TO CHECK FOR COOLANT TEMPERATURE SENSOR FAULT AND FAN RELAY AND FAN FAULT. MAKE SURE FAN FUSE IS GOOD.
Posted on Nov 12, 2009
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