GMC Envoy - Answered Questions & Fixed Issues


There is a linkage hooked to the indicator that may be broken

2003 GMC Envoy | Answered on Jul 23, 2019 | 1,062 views


4.2L Engine the thermostat and the neck where the hose goes on is one unit $25 at autozone
  1. Remove the necessary coolant from the radiator.
  2. Remove the alternator, Loosen the outlet hose clamp at the thermostat housing. Remove the outlet hose from the thermostat housing.
  3. Remove the thermostat housing bolts.
  4. Remove the thermostat housing from the engine block.
  5. Clean all of the surfaces of the thermostat housing.
  6. Clean the sealing surface of the engine block.

2002 GMC Envoy | Answered on Aug 06, 2019 | 4,521 views


There may be four. Bank 1, sensors 1, 2 and 3 and bank 2 sensor 1. This link will help you find the sensor that you need.

https://www.youtube.com/watch?v=vAxuP9UVQPs

2002 GMC Envoy | Answered on Jul 26, 2019 | 24 views


was it jerking before change out --check installation of unit

2006 GMC Envoy | Answered on Jul 06, 2019 | 20 views


Could be many things. But spark and fuel most common. 1st, is car getting adequate fuel? Check fuel pump or fuel filter. Then spark. Use spark plug tester for spark. Then mechanic.

2003 GMC Envoy | Answered on Jun 25, 2019 | 18 views


The service and repair manual with diagram will provide step by step help to locate and fix the problem on your own easily and you will get the manual from the given link Home Toolsnyou https://toolsnyou.com/

2002 GMC Envoy | Answered on Jun 11, 2019 | 31 views


Below are some diagrams for you. If you have the XL model there it will be different for the rear passenger compartment fuse panel which I did not include. I did include if you had a 6 or 8 cylinder engine for the under the hood fuse panel because there is a difference. This should be in your owners manual if you have one. If you do not and would like a copy, you can email me at csautomotivecars@att.net with your make, model and year and I will be happy to email you a copy. I hope this helps and good luck.


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2004 GMC Envoy | Answered on Jun 10, 2019 | 16,429 views


Your drive train may be in limp mode, which indicates something seriously wrong with it (engine or transmission). Check for trouble codes with a code reader.

GMC Envoy Cars &... | Answered on May 26, 2019 | 19 views


check connectors fuses and relays ----also check the connections ribbon connections and unit under rear seat drivers side --lift seat like your going to fold down

2002 GMC Envoy | Answered on May 09, 2019 | 27 views


Check for proper fuel pressure and vacuum leak

2004 GMC Envoy | Answered on May 09, 2019 | 49 views


yes pulley free wheels--- when clutch is engaged [turn on ]then compressor is turning as well

2004 GMC Envoy | Answered on May 08, 2019 | 26 views


Google your question.
About 280,000 results (0.61 seconds)

https://www.autozone.com/repairguides/S-T-Series-Blazer-Bravada-Envoy-Jimmy-Rainier-Trailblazer-Xtreme/Component-Locations/Secondary-Air-Injection-AIR-Pump-Relays/_/P-0996b43f80cb36eb

GMC Envoy Cars &... | Answered on Apr 30, 2019 | 48 views


Your anti-theft system kicked in for some reason. If you shut it off, the engine will turn over but will not start. A Chevy or GMC dealership is usually required to reset the system, but you'll have to bring it to them. Dealer + Towing = BIG $$$$. A less expensive option would be a mobile mechanic (call them first) or a licenced locksmith. Either way you'll need to show ID and proof of ownership.

2002 GMC Envoy | Answered on Apr 22, 2019 | 31 views


The best way to fix the problem is getting help from service and repair manual with pictures and diagram which will give you step by step help to locate and fix the problem on your own and you will get the manual from the given link https://toolsnyou.com

2002 GMC Envoy | Answered on Apr 16, 2019 | 39 views


Look for black wire. Check it by using an omh meter and testing it to a ground.

GMC Envoy Cars &... | Answered on Mar 29, 2019 | 30 views


The fuel filter on your vehicle is located inside the fuel tank and is part of the fuel pump module. It is, in theory, a lifetime filter and can only be changed by replacing the entire pump module assembly.

2006 GMC Envoy | Answered on Mar 18, 2019 | 2,048 views


Window fuse's and relay's may be up under driver or passenger side dash or behind glove box, under the hood and even under the seats, and finally on the ends of the dash. All passenger power windows and locks are controlled thru and get power from the master control switch on the drivers door.

Drivers door window gets used the most so it could be the motor, window switch, relay or fuse.
Could also be a broken wire in the rubber boot going from the door to the body. You will have to eliminate each till you find the culprit. Check that all switches return to neutral when released.
The motor and the relay are the most likely to cause this problem. Try swapping the relay with a working window relay. If it still doesn't work, remove the door panel and remove the window motor.
Turn the motor shaft in both directions by hand several turns. Then plug the motor in and see if the switch will now run the motor. Sometimes that's all it takes to get it working again. I have had to do this with brand new motors. If voltage is not present at the motor connector, either a bad switch or a broken wire exists. Make sure to check for voltage coming to that windows switch. Actually, GM use's a circuit breaker type relay for each window and one fuse for all the circuit breakers.

Try this....
Open the door, turn the key to the ON position without starting the engine and everything that makes noise is off. Lean down placing your ears close to the bottom center of the door or at the speaker grill. Press the window switch UP and DOWN. Listen for the window motor. If heard the drive is damaged. If not heard, turn key off and locate and replace the relay with one of the other window relays. Check window again. If it works now, get a new relay. More often than not, removing the motor and turning it by hand will get it working good as new. I have had to do that with Brand New motors! So try it.
If all has failed, with the door panel still off, check for voltage at the motor connector when pushing the window switch. No voltage means its the switch, especially if its a auto down or up switch.

Most cars these days have this designed into the window system. It's a safety issue and I'm afraid there may nothing you can do. If there is more window track below the bottom of the glass, look for stops bolted or riveted in the track. If so, you may be able to move them down. However, this is dependent upon the drive mechanism, which may also limit window travel.

Check the master window control panel on the driver's door. There is probably a lockout switch. It may have a window outline on one end and the same outline with an "X" over it on the other. Press the outline without the "X" and all your windows should work again. As silly as that sounds, a lot of people hit that switch without knowing it. Also, if that switch(lockout) is faulty, none of the windows will work. That happens A LOT!!

2005 GMC Envoy | Answered on Jun 20, 2019 | 1,956 views


Did you check the fuse ? Do you hear the wiper motor running ? If the fuse is good you would need to test the electrical circuit for the wiper motor ,viewing a wiring diagram an then use a DVOM - digital volt ohmmeter to test
What body type is it ? Vin 6 or 3 could have a circuit breaker for power supply or fuse ,both are located in the rear fuse block .

Rear Wiper/Washer System Components
The rear wiper/washer system consists of the following components:
• Rear window wiper motor
• Rear window washer fluid pump
• Rear wash relay
• Rear window wiper/washer switch
• RR wiper 15A circuit breaker
• WASH 20A fuse
Rear Wiper/Washer System Controls
• Body control module (BCM)
• Liftgate control module (LGM)
• Rear wiper/washer switch

Here is how it is controlled

Rear Wiper/Washer System Operation
The rear window wiper/washer switch is an input to the BCM. The requested rear wiper mode is sent to the liftgate control module (LGM) by the BCM as a message on the serial data circuit, and the rear window wiper motor is controlled by the LGM. The switch power circuit to the rear wiper/washer switch is a 12-volt reference supplied by the BCM during ignition on, accessory or RAP power modes. The rear wiper/washer switch is a series of resistors and the switch position is determined by the voltage of the rear wiper/washer switch signal circuit to the BCM. The rear wiper/washer switch has continuity at all times and the BCM expects a rear wiper/washer switch signal voltage in all switch positions including OFF. The rear wiper motor is supplied battery positive voltage and ground. The LGM controls rear wiper motor operation through the rear wiper motor control circuit. The rear wiper motor control circuit is supplied a battery positive reference voltage by the rear wiper motor module and is pulse width modulated to ground by the LGM. The duty cycle of the pulse width modulation determines the rear wiper motor operating mode. The liftglass and liftgate ajar switches are inputs to the LGM and must be in an inactive state in order for rear wiper washer system operation to be enabled. When an ajar switch is active the LGM suspends wiper motor operation directly and sends the ajar switch status messages over the serial data circuit enabling the BCM to suspend washer pump operation. The rear window washer pump is controlled by the BCM through the rear washer relay. Battery positive voltage is supplied to the coil and switch sides of the rear washer relay. When the rear window wash request is active the BCM energizes the relay by grounding the relay coil through the rear washer relay control circuit. When the relay is energized battery positive voltage to the relay switch is supplied to the washer pump control circuit.

Your best bet mite be to have a qualified repair shop check for codes in the BCM or LGM
--------------------------------------------------------------------------------
DTC B1017 or B3970

The rear wiper motor is supplied battery positive voltage and ground. The liftgate control module controls rear wiper motor operation through the rear wiper motor control circuit. The rear wiper motor control circuit is supplied a battery positive reference voltage by the rear wiper motor module and is pulse width modulated to ground by the liftgate control module. The duty cycle of the pulse width modulation determines the rear wiper motor operating mode.

2002 GMC Envoy | Answered on Mar 12, 2019 | 89 views

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