How to replace h valve intake and outtake on Pontiac grand am 2003

You should build the find everything you need as far as diagrams and hose connections at your local library most libraries have repair manuals that include these features that you can use

Hi Roneal,here's a EGR valve.Here's a second opinion.

it's the rubber T-Fitting .....in front of intake under supercharger

EGR is located behind the Throttle body. It is a short cylindrical part with a plug connected to it.

stand all rods up on a table top, there should be 6 short and 6 long, the short rods go to the intake valves and the long rods go to the exhaust valves.not sure which is the intake and exhaust then with the intake off look into the intake holes if you can see the valve in there then that is the intake valve.

Do you see the coolant leaking on the motor? From the drivers side, you can inspect the intake manifold...unfortunately as good as this motor usually is...it is known for leaking at the intake manifold...and requires a new intake gasket...DO NOT USE dexcool after the replacement...many teams believe the dexcool is part of the problem...use the coolant that "For All Coolant Systems" is still the green anti-freeze...Hope this helps.

Did you try Head gasket fix I had 99 3.4 works well?

If you don't know where the EGR Valve is located, it is safe to assume that you did not properly diagnose your EGR system...how do you know the valve needs replacing?

If you are trying to fix a trouble code P0401 " Exhaust Gas Recirculation (EGR) Insufficient Flow" (This is a very common code with 3.1L GM Engines)
An EGR Valve replacement will most likely make you about $125 poorer than you were before and will not fix the problem.

Your EGR port into the intake manifold is most likely clogged up and needs to be cleaned out.

You will need a Throttle Body Gasket, an EGR Gasket, a can of ThrottleBody and Intake Cleaner, and a little antifreeze. (You will lose just a little when you remove the throttle body.)


Remove the EGR Valve and the Throttle Body. Use a screw driver or pick to chip out the carbon buildup in the EGR port going into the intake manifold. You will probably have to work it from the intake side as well as the EGR side to get as much of the black carbon out as possible. Be careful not to let this stuff go down into the intake plenum - you will burn some valves if it gets in there. Then use the Throttle Body and Intake cleaner to finish the cleanup. (It helps to take a rag and stuff it into the intake manifold just past the EGR port to catch the gunk so it doesn't go down into the plenum...just don't forget to remove the rag before putting the Throttle Body back on)

Put everything back together and top-off your antifreeze and clear your computer codes. That should fix it.

EGR valve

If im correct i beleive those engines have hydraulic lifters in them. Thats probably whats making the noise. it's useless to replace them. It's not gonna affect your engines performance. just let it knock