Question about 2003 GMC Envoy

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How to replace the throttle body on my 2003 GMC Envoy SLE

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 4 Answers

SOURCE: How to replace the headlights on my 2003 GMC envoy.

The headlights on the envoy are the easiest parts of the car to repair. You just pull the two tabs at the top of the headlights, screw out the bulb containers and you are good to go

Posted on Nov 15, 2008

  • 14036 Answers

SOURCE: need to find blower resistor for 2003 GMC envoy


Posted on Jun 06, 2009

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SOURCE: The blower speed switch only works on 5. The

this problem is caused by a defective blower speed control resistor, it is located near the blower motor, very cheap to replace, part is around $35

Posted on Oct 26, 2009

Testimonial: "Thanks I thought it might be that. Good info!"

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SOURCE: where is coolant temp sensor located on 2003 gmc

heres a diagram to show you where the coolant temp sensor is located, its behind the alternator on the left side (driverside),the sensor just unplug the connector and then unscrew it and out it comes.

Posted on Jun 21, 2010

  • 1311 Answers

SOURCE: Code P0121 on 2006 GMC Envoy Denali Check eng.

Cleaning the throttle body is certainly the right thing to try first. Make sure you clean the throttle plate as well.

Posted on Nov 29, 2010

Testimonial: "Thanks. It seems to have worked."

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1 Answer

2004 gmc envoy SLE 4,2 6cyl

Tachometer stepper motor on the back of the cluster probably needs to be replaced.
Rough Idle can be caused by many thing, but the #1 thing that causes that is a dirty throttle body. Needs to be cleaned with the battery disconnected.

Aug 02, 2015 | GMC Envoy Cars & Trucks

1 Answer

How to Install 2013 Sierra Stereo in 2003 GMC Envoy XL SLE With Bose

You may lose the Bose amp too. That would be no sound from the speakers too. I don't think they will exchange.

Jun 19, 2014 | 2003 GMC Envoy

1 Answer

2003 gmc envoy xl 4wd 5.3 litre idles low and stalls mainly when parking but sometimes also when coming to a stop...have replaced many parts already.

Hello: Get some carburetor cleaner, remove rubber tube going to the throttle body. Spray cleaner on rag and open throttle plate and clean all black stuff (carbon) off the throttle plate and the inner bore of the throttle plate. Make sure its clean, You can spray some in the throttle body but not very much as too much and you cab blow the engine up. If build up is bad (carbon) go to Auto Zone and purchase a small brass bristle brush to help remove carbon.

Oct 24, 2011 | 2003 GMC Envoy

1 Answer

My 2003 GMC envoy 6cyl wants to die when i turn ac or heater on

The throttle body needs to be cleaned, make sure to clean both the front side and back side, this means that the throttle body needs to be removed from the intake. Also, disconnect the battery while cleaning, this will reset the computer and allow it to relearn to the cleaned throttle body.

Oct 09, 2011 | 2003 GMC Envoy

1 Answer

Where is po105 manifold absoulete pressure BARO circuit on a 2003 Envoy and how to fix it

It's just to the right of the throttle body. Follow the air cleaner hose, from the air cleaner. Goes from the air cleaner up to near the firewall, then turns right and into the throttle body. On top of the upper intake manifold is the MAP sensor. Probably the easies sensor to replace on the entire engine. Just inplug and replace.

Apr 09, 2011 | 2003 GMC Envoy

1 Answer

The reduced engine power light has been coming on in my 2003 Envoy

1st things first, clean your throttle body with throttle body cleaner. Clean it with the battery disconnected. When finished, drive around for 5 or so miles to reset the computer. The butterfly in throttle body is probably sticking. The throttle body must be nice and shiny when finished.

Jan 12, 2011 | 2003 GMC Envoy

2 Answers

Turn signals come on but no blink , also flashers same thing, on but no flash ,, 2003 GMC Envoy sle

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Nov 05, 2010 | 2003 GMC Envoy

1 Answer


Need to have the throttle body and throttle plate cleaned. Grime builds up in this area and prevents plate from closing completely.

Sep 26, 2010 | 2003 GMC Envoy

1 Answer

What dus the code 1516 mean on a 2003 gmc envoy

That code is for throttle body or tac module check wiring for throttle body or could be bad throttle body

Oct 15, 2009 | 2003 GMC Envoy

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