Problem with my 2002 Pontiac Gran Prix GT
3.8 Series 2
dash lights =
ABS and  TRAC OFF
codes = C0035, C0245, C0036
work done prior = REPLACED BOTH FRONT WHEEL BEARINGS AND ALL
FOUR ROTORS AND NEW BRAKE PADS
tech = JK
question = WHAT IS MY ABS PROBLEM? Why does my car do this.


JK:
The first and last code are for left and right front wheel speed sensors. The c0245 is  
caused by a difference between the left and right front sensors. After replacing the
hubs, did you plug the sensors back in? If so, make sure you did not damage either of
the  harness. If they are plugged in and ok, then you need to follow the harnesses up
along  the lower control arm and on to the frame rail.
Be sure you installed the correct hubs.
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WARNING LIGHTS
Problem with my 2001 Pontiac Grand Prix GT
Engine size =
3.8 L V-6 (non-supercharged))
My Service engine soon
GM Computer codes = p0108
Repairs done prior = Just replaced the upper intake manifold.

GM tech = KK
question = I have a 2001 Grand Prix GT (non-supercharged).  I just replaced my  
upper intake manifold due to warping causing a coolant leak.  After putting everything
back together I have a problem with the vacuum system.  At idle when I take off the oil
 cap there is way to much suction coming through. It pulls the cap back hard.  When I  
cover it with my hand the engine RPMS go way up and it sounds like the vacuum is  
starving for air.  Is it possible that while replacing the upper intake I spilled coolant into
the tube leading to the PCV valve?  I checked all vacuum lines and they seem to be  
all right and hooked up correctly.  Also I did not use any extra sealant on the gaskets  
as I heard this can cause problems.
Why does my GP doing this.







KK:
Only thing that can cause this vacuum problem and the MAP sensor code is that  
either you did not install the PCV valve, the valve O ring is missing, or possible the  
large plastic insert is not in the new manifold. It should have come with this insert.
Look at the inside of the old manifold and you will see a runner insert that can be  
removed. If this was missing from the new manifold, it could cause this. Be sure the   
PCV valve is installed. Getting coolant in any tube or passage would not cause this.
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