Top 10 2005 GMC Envoy Questions & Answers

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Fuse Panel diagram on 2005 GMC Envoy.

Fuse Panel diagram on 2005 GMC Envoy. I need to know what each fuse is used for. Thanks

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doesnt it say on the inside of the cover?

Posted on Oct 17, 2009

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my heater/blower fan will not shut off in my 2005 envoy even after my ignition is turned off and key is out, i've read a few similar problems on this, what is the solution and how much will it cos

my heater/blower fan will not shut off in my 2005 envoy even after my ignition is turned off and key is out, i've read a few similar problems on this, what is the solution and how much will it cost??

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Depending which HVAC system you have Manual (sliders for temperature) or Auto (digital readout), the control module is likely at fault. The Manual HVAC has a Resistor Module (which have a high failure rate) and the Auto HVAC uses an electronic module. Both of these are mounted next to the blower motor located behind the glovebox.

Posted on Oct 05, 2012

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how to replace fuel filter on 2005 GMC Envoy

how to replace fuel filter

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First check to see if you have a fuel filter. It will be located between tank and engine. Apparently, some Envoys do not have a filter, just a screen mounted on underside of fuel pump which is in fuel tank.

Posted on Aug 08, 2010

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where can I find the purge valve solenoid on 2005 gmc envoy

where can I find the purge valve solenoid on 2005 gmc envoy

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You can see physical location and the procedure how to replace purge valve solenoid in GMC Envoy on: https://www.youtube.com/watch?v=Y9C8nR6iv7A

Procedure:
DTC P0496 - Evaporative Emission (EVAP) System Flow During Non-Purge

If the EVAP purge valve does not seal properly, fuel vapors could enter the engine at an undesired timing causing drivability concerns. The control module tests for this by commanding the EVAP purge valve OFF closed and vent valve ON closed, sealing the system, and monitoring the FTP for an increase in vacuum. If the control module detects that Evap system vacuum increases above a calibrated value, DTC P0496 will be set.

This could be a sign that your purge valve is intermittently failing so you might want to get it checked out before it turns into a bigger problem that affects the drivability of your truck.

EVAP is located behind the throttle body, near the front of the engine...

9k=

Fig. Front engine compartment view-4.8L, 5.3L, 6.0L and 6.2L engines (1) Throttle Body (2) Manifold Absolute Pressure (MAP) Sensor (3) Evaporative Emission (EVAP) Canister Purge Solenoid Valve (4) Knock Sensor (KS) (5) Engine Block Heater (6) Engine Coolant Temperature (ECT) Sensor (7) Camshaft Position (CMP) Sensor (8) Generator

The first step would be to simply clean the valve and see if that helps. The purge valve will be an inexpensive part (probably $20.00 or so) so I'd usually just replace it instead of trying to test it too thoroughly. I've found it can be a somewhat tough part to come by third party dealers (Napa, Autozone, etc.) So you might have to contact your local GMC dealership parts department to buy the part.

The best thing to do would be to ask the person at the repair dept who sells you the part to copy the page with the replacement guidelines from the service manual. You usually won't have any trouble getting them to do this and then you'll have a good written copy to follow while you change the valve.

The other option would be to have a local mechanic do the replacement for you.

Hope it helps...
P0496 code Purge Valve Test Replacement 2008 GMC Envoy
gmc 2005 evap location-5h1dftqjve0hik0x42lxmxyb-1-0_0.jpg

Posted on Nov 16, 2018

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driver side door controls not

driver side door controls not working ,windows , lock/unlock , power mirrors

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HI. My Gmc driver side door controls go out occasionally and what I do is I lift the backseat behind the driver and access the fusebox. The top corner has 4, 10 amp fuses going down in a row and I take them all out and put them back in. IM sure its only one of those fuses that i need to do that with, but I do all four because I dont know which one is responsible for the door. Im sure a quick google would provide that info. I've done that twice and this time its lasted for awhile. I almost paid to have new wiring installed so please try this first. I THINK water gets up there and touches the wires? causing the fuse to short? or something like that?

Posted on Mar 12, 2019

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how to change a fuel injector on a 2005 gmc envoy

how to change a fuel injector on a 2005 gmc envoy

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For gmc envoy fuel injector replacing procedure,click the link below :---http://schematicsdiagram.blogspot.in/2012/03/how-to-change-fuel-injector-on-2005-gmc.html
---------This will help.Thanks.

Posted on Mar 01, 2012

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how do i reset security system on an 05 gmc envoy

i changed ignition in envoy but it wont start still how do i reset security on it?

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Try using the door key to lock and unlock the drivers door.

Posted on Jul 24, 2016

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P0410 DTC code GMC Envoy 2005

I have checked the circuits on this thing. The Air Solinoid Valve resistance across pins is 4 ohms. I have removed the valve and don't see anything allarming about it. There was a little moisture in the valve when I took it off. The inside does not look bad I did soak it with penetrating oil before putting in back on. I ran a trouble light from the pos side of the battery to the ground side of the harnes and it lights up. I have replace both Oxygen sensors within the last two weeks. One thing I did find the air pump is not running. The relay is good (checked with ohm metter and the pump runs when connected to power supply. What I don't get is a ground to the control side of the Air blower relay. When I run the control side Air Pump Relay to ground things work. Information I don't have is where this wire runs to and at what point is the loop closed to go to ground. Reading the diagnosis chart it is controled by the PCM via Oxygine sensor. What the chart does not say if it closes the loop during initial start or after a vehicle has warmed up. I would also like to know where the other end of the wire is so I can do a continuity check to see if I have an open wire. Am I chasing the wrong thing? Is there something else I need to be looking at. I just wish I could afford a tech scanner.

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The relay ground will be controlled by the PCM. The air injection pump is only commanded on for a few seconds when the engine temp sensor is reading below 210 deg f (cold start conditions). This makes the temp sensor the primary input for this system not the 02 sensor. The PCM looks for the 02 sensor to drop below 150 millivolts within 2 or three seconds of starting the fan and opening the solenoid. if the 02 sensor does not do this, code P0410. Did you run 12V to the solenoid? Did it open?
Closed loop status simply refers to a condition in which the engine is using feedback from the 02 sensors to control the air/fuel ratio.

Posted on Jun 02, 2010

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My 2006 GMC Envoy heater

My 2006 GMC Envoy heater fan has stopped working. I checked the switch and it is good. I didn't know how to get to motor itself to check it there. Any suggestions?

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The blower motor is located behind the glove box. Open the glove box and at the left rear is a wire catch mechanism, push on this and the box will move further down. The motor and blower motor resistor module can be accessed here. Does the blower work on any of the speeds? If yes, then suspect the resistor module. If no, check for a blown fuse or bad motor.

Posted on May 02, 2011

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the gas gauge is still

the gas gauge is still not working even when the fuel pump is replaced n gas unit as well. I spend a 1,000 dollars n it is not fixed. can the fuse cause the gas gauge not to work.

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Hi have you had the fuel sender unit replaced this is located in the top of the tank, the most faults with fuel gauge not working is the fuel sender unit its usually the float attatched to it that leaks and then always read an empty tank, the fuel pump does not affect the gauge even without a fuel pump fitted the gauge will still work, now if you have replaced the sender unit then the chances are the problem is with the fuel gauge itself, have you tried banging on the dashboard where the fuel gauge is sometimes it sticks and giving the display a bang where the fuel gauge is frees it up so give it a bang and see if it moves, failing that the problem is going to be fuel sender or less likely faulty fuel gauge.

Posted on Jul 27, 2010

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