Top 10 2005 GMC Envoy Questions & Answers

doesnt it say on the inside of the cover?

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.

Well the gauge and lighting problem is a common issue with the 03-05 Envoy instrument clusters and can be fixed. It's caused by failing stepper motor and bulbs on the cluster's circuit board. Check out this page for more on how to get it fixed - Envoy instrument cluster broken

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.

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?

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.

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...



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

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.

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

https://youtu.be/V8ijhriM44g