How to change a fuel injector on a 2005 gmc envoy

Question edited for clarity.
Question moved to model category.

There are injector and also 'air injector' fuses. Not sure what the latter are though?

Press CTRL+F and type injector and press enter.

GMC Envoy (2002-2009) fuses and relays

Fuse Box Diagrams https://fuse-box.info > gmc > gmc-envoy-2002-2009-...
Engine compartment fuse box ... It is located under the hood in the engine compartment on the driver's side of the vehicle. ... Remove the primary cover by pressing ...

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thats probably what it gets, tune it up, change air and fuel filters, E3 spark plugs, plug wires, what ever it takes to make it run better, drygas in fuel tank, every fill up, (red bottle, has fuel injector cleaner) todays gasoline has 10% ethanol in it, not good for older cars.

For jeep grand Cherokee fuel injectors replacing, i suggest you to go the help oink provided below:-----

Its a complete step by step procedure to do so:-----

Fuel Injector Replacing Jeep Grand Cherokee

http://www.howtorepairguide.com/2012/11/fuel-injector-replacing-jeep-grand.html
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How to Replace a Fuel Injector
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-fuel-injector.html-----------

How to Test and Replace Fuel Injectors on Acura Car Models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-test-and-replace-fuel-injectors.html
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How to change fuel injector on 2005 gmc envoy?
http://schematicsdiagram.blogspot.in/2012/03/how-to-change-fuel-injector-on-2005-gmc.html
------------These will help.Thanks.

How to Diagnose an Engine Misfire Fuel Fire or Compression Watch some more videos !

DTC P0542 - Fuel pump secondary circuit?

That code isusually set when the inertia switch is tripped or been unplugged while doing a fuel injection service. Being that you have fuel pressure the pump is working and is most likely a memory code. Disconnect the battery and recheck for codes, perform anothe key on engine off test. and see if the same code resets.If it doesnt start try running the vehicle with your foot on the gas with it open part throttle, if it runs and holds an idle it is a sticking idle air control valve.

Hope this helps.

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.

Envoy/Trailblazer/Ranier/Ascender vehicles do have a fuel filter. Mine Envoy XL, 6 cyl.) is on driver's side, inside chassis under passenger door.

That is in the tank and part of the sending unit. You do not need to change it on this model.

Check your fuse, if the fuse is fine, check for broken wir or unplugged connection inside or out of tank.

maybe fuel fiter