20 Most Recent 2005 GMC Envoy - Page 2 Questions & Answers


You should have 2 "round things" there, those should be the front and rear pumps. All it is is a 90 degree rubber hose fittings that goes into each one. Maybe this hose is cracked or off.


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2005 GMC Envoy | Answered on Jun 16, 2017


The non EXT version does for sure. In the fold of the seat where your "behind" goes, there is a nylon pull tab down there. Pull that up, the seat will go back to where your feet go, and now you can pull the back seat down torwards the driver seat using the lever on the side of seat.

2005 GMC Envoy | Answered on Jun 12, 2017


bleed the brakes again starting form the longest line back to the shortest
if you have been getting a pulsing feeling at the pedal under normal brakes you have warped rotors that need replacing or machining
under normal brakes the abs is not effective and it is only under sever brakes that you will experience the pulsations at the pedal

2005 GMC Envoy | Answered on May 15, 2017


Regrettably that is not possible you will need to get new keys cut to the lock or replace all the locks and get the keys coded to the vehicle security system

2005 GMC Envoy | Answered on Apr 18, 2017


Hello Kammy ,you have electronic problems ! Your best bet would have it towed to a qualified repair shop .
SERVICE BRAKE SYSTEM
Refer to Brake Warning System Description and Operation !
The instrument panel cluster (IPC) illuminates the brake warning indicator when one or more of the following occurs:
• The body control module (BCM) detects that the park brake is engaged. The IPC receives a class 2 message from the BCM requesting illumination.
• The electronic brake control module (EBCM) detects a low brake fluid condition. The IPC receives a class 2 message from the EBCM requesting illumination.
• The EBCM detects an ABS malfunction which disables dynamic rear proportioning (DRP). The IPC receives a class 2 message from the EBCM requesting illumination.
• The IPC performs the bulb check at the start of each ignition cycle. The brake warning indicator illuminates for approximately 3 seconds before turning OFF.
• The IPC detects a loss of class 2 communications with the BCM or with the EBCM.

When there are electronic problems the computers will not allow the vehicle to start , hooking up a factory or professional scan tool to see what the problem is is the first place to start .

2005 GMC Envoy | Answered on Apr 14, 2017


Piece of cake. Turn off all HVAC first, then unhook the battery. Take the plastic resonator off the top of engine, remove the air ducting that goes to throttle body. Unhook the electrical connector on top of throttle body, then remove the 4 bolts that hold it in. Use a product like Seafoam spray (or sensor safe spray) to clean with rag or nylon brush to clean BOTH sides. Reinstall in reverse order. Most important part is HVAC off and Battery disconnected for the CPU to relearn the newly cleaned throttle body. By the way, reuse the hard plastic O-ring in there behind the throttle body, no need to get a new one unless broken.

2005 GMC Envoy | Answered on Mar 28, 2017


I'm linking a YouTube video of a transmission/transfer case removal from a GM rwd/awd/4wd vehicle. The exact steps may not be the same for your Envoy, but you will get a general idea of what is involved. If you want step by step instructions, get a repair manual (Haynes, Chilton, Motor, etc) from your local auto parts store. How To Remove Transmission Transfer Case From GMC Sonoma Chevy 10 Blazer...

2005 GMC Envoy | Answered on Mar 22, 2017


The fuel cutoff switch and the oil switch are one and the same. It is on the china wall on the back of the engine. Hope this helps.

2005 GMC Envoy | Answered on Mar 14, 2017


This sounds like a vacuum or hydrolic issue. If The pedal is spongy soft while its running it indicates air in the brake line, or faulty master cylinder, or faulty brake booster. A faulty master cylinder would get hard after a few pumps of the pedal. Since the pedal is hard when it is shut down, it makes me lean toward the brake booster.

2005 GMC Envoy | Answered on Feb 17, 2017


This is the usual behavior. When the engine is running, it is generating a vacuum, which pulls on a diaphragm in the brake booster. This is what is called "power brakes". It uses engine vacuum to help push hydraulic fluid thus reducing the amount of pressure you must apply to the brake pedal. When the engine is off your foot has to make up for the force that engine vacuum usually applies, which makes the pedal feel much more firm.

2005 GMC Envoy | Answered on Feb 14, 2017


The headlamp driver module (HDM) is an electronic module that provides electrical power to the vehicle low beam headlamps. The HDM is controlled by a pulse width modulated (PWM) ground signal from the body control module (BCM). The BCM determines the desired lamp intensity using the ambient light sensor, multifunction switch and the park brake switch as inputs. In general, the HDM will operate in 1 of 3 modes:
Your best bet have it checked by a qualified repair shop ! May have DTC'S diagnostic trouble codes .
DTC B2575
DTC B2575 Headlamp Control Circuit
When the body control module (BCM) senses a request for headlamp or daytime running lamp (DRL) illumination, the BCM sends a pulse width modulated (PWM) ground signal to the low beam headlamp driver module through the low beam headlamp driver module control circuit. The low beam headlamp driver module will illuminate the headlamps, adjusting the intensity based on the PWM signal received.
DTC B2580 Headlamp High Beam Control Circuit
DTC B2645 Ambient Light Sensor Circuit
The body control module (BCM) monitors the ambient light sensor signal circuit in order to determine if the daytime running lights (DRL) or the auto headlights (ALC) should be turned ON in the AUTO mode. When the BCM senses the ambient light sensor signal voltage is between 1.75-4.9 volts, either the DRL will be commanded ON or the ALC will be commanded ON depending upon the amount of light received by the sensor.

2005 GMC Envoy | Answered on Feb 07, 2017


Does your husban know how to do electrical testing ? Find a wiring diagram , voltage drop test the circuit to find what's missing power or ground . The hit could have damaged wiring or ground . You can find a wiring diagram at http://www.bbbind.com/free_tsb.html Also watch youtube video on Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia .

2005 GMC Envoy | Answered on Jan 21, 2017


There may not be one.

2005 GMC Envoy | Answered on Dec 25, 2016


I am only able to shoot you a guess on this and hopefully it steers you the right direction. I believe your vehicle went into limp mode. This can be from over heating to emission problems to a bad piston. The vehicle does this to protect itself. The cheapest way to diagnose this one is to take it in. Remember, having it diagnosed does not mean you cannot fix it yourself. Just pay the fee and take it home if it is something you want to tackle.

2005 GMC Envoy | Answered on Dec 25, 2016


Try looking either very right or very left end of dash, you have to open the door to see the plastic panel. Pop off the panel and there are the fuses.

2005 GMC Envoy | Answered on Dec 25, 2016

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