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How do I change the fuel pump in a 2009 GMC Acadia

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. What engine does yours have 2.8 - 3.0 - 3.2 - or 3.6 L ? Does it have direct fuel injection ? if it does it has two fuel pumps , a low pressure pump in the fuel tank and a very high pressure one that operates off one of the cam shafts .
The fuel tank stores the fuel supply. The fuel pump module, located in the fuel tank, supplies fuel through the fuel feed pipe to the high pressure fuel pump. The high pressure fuel pump supplies fuel to a variable-pressure fuel rail. Fuel enters the combustion chamber through precision multi-hole fuel injectors. The in-tank fuel pump is controlled with a fuel pump control module (FPCM). The engine control module (ECM) enables the FPCM and sends the desired fuel line pressure to the FPCM via GMLAN. The FPCM sends a pulse width modulated (PWM) voltage to the in-tank fuel pump allowing the fuel line pressure to be varied as commanded by the ECM. The high pressure fuel pump, fuel rail pressure, fuel injection timing, and injection duration are controlled by the ECM.
If you don't know about this you really should not mess with it !
Fuel Pump Flow Control Module (FPCM)
The fuel pump flow control module (FPCM) is a serviceable GMLAN module. The FPCM receives the desired fuel pressure message from the engine control module (ECM) and controls the fuel pump located within the fuel tank to achieve the desired fuel pressure. The FPCM sends a PWM signal to the fuel pump, and pump speed is changed by varying the duty cycle of this signal.
You may not have a bad fuel pump !

Posted on Feb 03, 2015

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Drop the fuel tank and remove the circle lock. Youll see it when you take the cover off.

Posted on Feb 03, 2015

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andrew richards

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SOURCE: How do you replace the headlight bulbs in a 2009

under the hood at the back of the head lights you can twist and unplug the bulb or they will do it at the part store for you most the time

Posted on Jul 29, 2010

Kevin Rahme

  • 401 Answers

SOURCE: How do I change the headlights for the 2009

first are they HID
if just HALOGEN LIGHTS BULB
jack the vehicle up and remove the tire on the side you are replacing the light
remove the inner fender
you will see a round plug turn and remove then you will see the bulb
replace the bulb and reassemble

now if they are HID LIGHTS OR YOU ARE REPLACING THE WHOLE HEADLIGHT ASSEMBLEY
then the whole FRONT BUMPER FACIA HAS TO COME OFF
hope this helps let me know

Posted on Nov 15, 2009

Anonymous

  • 1 Answer

SOURCE: 2008 gmc acadia low beam light bulb changing

how do you change the low beam light bulb on the 2008 gmc acadia

Posted on Apr 02, 2009

dmsr63

Douglas Hansen

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SOURCE: How do I reset my

It's in your manual, but I recall it to be...
Turn the ignition key to "run" and then depress the gas pedal three times down, and let off...then wait for yor light to flash, then key off.

Posted on Aug 13, 2010

wyet_helps

wyet

  • 510 Answers

SOURCE: does a 2008 GMC Acadia have a fuel filter?

{: ) It has no in-line fuel filter. The fuel filter, or the fuel strainer is integrated to the fuel pump, which are inside the fuel tank.

Posted on Jun 16, 2011

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1 Answer

Where is fuel pump relay on 2009 gmc acadia


Your vehicle has no fuel pump relay . Has a fuel pump flow control module .
Fuel Pump Flow Control Module (FPCM)
The fuel pump flow control module (FPCM) is a serviceable GMLAN module. The FPCM receives the desired fuel pressure message from the engine control module (ECM) and controls the fuel pump located within the fuel tank to achieve the desired fuel pressure. The FPCM sends a PWM signal to the fuel pump, and pump speed is changed by varying the duty cycle of this signal.
Plus it has two fuel pumps !
The high pressure fuel pump (9) is a mechanical one cylinder design driven by an eccentric on the exhaust camshaft (1) of bank 2. High pressure fuel is regulated by the fuel rail pressure (FRP) regulator, which is a part of the high pressure fuel pump. The FRP regulator is a magnetic actuator which controls the inlet valve of the high pressure pump. The ECM provides battery voltage on the actuator high circuit and ground on the actuator low reference circuit. Both circuits are controlled by the ECM. When the ECM deactivates the FRP regulator, both circuits are disabled and the inlet valve is held open with spring pressure. When the ECM activates the FRP regulator, the low circuit driver connects the low reference circuit to ground and the high circuit driver pulse-width modulates (PWM) the high circuit. The ECM uses the camshaft and crankshaft position sensor inputs to synchronize the FRP regulator with the position of the eccentric on the camshaft. The ECM regulates fuel pressure by adjusting the portion of each pump stroke that provides fuel to the rail. The high pressure fuel pump also contains an integrated pressure relief valve.
Your best bet is have it towed to the dealer , you don't want to mess with the high pressure pump .
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1 Answer

Does a 2008 GMC Acadia have a fuel filter? If so where is it


{: ) It has no in-line fuel filter. The fuel filter, or the fuel strainer is integrated to the fuel pump, which are inside the fuel tank.

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