How to Replace Fuel Injectors 2002-2009 Chevrolet Trailblazer (4.2L L6)

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New Fuel Injector from 1AAuto.com 1aau.to/ia/1AFIN00130
This video shows you how to install new fuel injectors in your 2002-2009 Chevrolet Trailblazer (4.2L L6). Fuel injectors are computer controlled spray nozzles that deliver fuel to your engine in precisely controlled volumes. They are one of the keys to modern efficient and clean engines. If a fuel injector is dirty or failing, it can present symptoms such as rough idle, engine surges, rich or lean conditions, and check engine lights. Replacing a problematic fuel injector with an engineered to fit TRQ replacement part right away is essential to the health of your vehicle’s engine.
This repair was done on a 2007 Chevrolet Trailblazer LT 4.2L Sport Utility 4-Door 4WD Automatic and the process should be similar on the following vehicles:
2002 Chevrolet Trailblazer
2003 Chevrolet Trailblazer
2004 Chevrolet Trailblazer
2005 Chevrolet Trailblazer
2006 Chevrolet Trailblazer
2007 Chevrolet Trailblazer
2008 Chevrolet Trailblazer
2009 Chevrolet Trailblazer
Tools you will need:
• Flat Blade Screwdriver 1aau.to/obxU/1AXAA00013
• Pocket Screwdriver
• Pry Bar 1aau.to/o3k/1AXAA00020
• 10mm Socket 1aau.to/obts/1AXAA00017
• 8mm Socket 1aau.to/obts/1AXAA00017
• Air Compressor
• Trim Tool Set 1aau.to/oans/1AXXX00006
• Vacuum
• Pliers
• Ratchet 1aau.to/obTj/1AXAA00016
• Socket Extensions 1aau.to/obPT/1AXAA00015
• Torque Wrench 1aau.to/oaWC/1AXAA00044
• Brake Parts Cleaner
• Cloth Rags 1aau.to/oIB/1AXSS00035
• Engine Oil
• Gloves 1aau.to/oaEk/1AXSS00048
• Liquid Thread Locker
• Painter's Tape
• Paper Towels 1aau.to/oIB/1AXSS00035
• Safety Glasses
• Pick 1aau.to/oVA/1AXAA00037
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⚠ DISCLAIMER:
While TRQ strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. TRQ is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.

[@TRQ]

√ Watch the Video √ Buy The Part at 1A Auto 1aau.to/m/Shop-TRQ-Parts √ Do it Yourself √ Save Money

[@pontiacsrule8761]

This guy from TRQ- 1A Auto is so thorough. He explains everything in detail & gives you the bolt head's socket to use. The camera work id great. The parts they use are high quality. It's is really high quality video & parts. What a great company they are.

[@TRQ]

+@pontiacsrule8761 Thank you! We love empowering our customers and showing how to perform DIY auto repairs with our high-quality auto parts. 1aau.to/m/Shop-TRQ

[@carsonmcdowell]

Amazing! Love these videos. I love to work on my own and these have helped so much. Thanks for making them!!

[@moonlightgintv5738]

No grease on the o ring??

[@SJPaguio]

Thanks! Very helpful.

[@gynell2043]

Does the 2003 GMC Envoy SLT have the exact same parts and placement of the fuel injectors as this video? I have this particular Envoy and noticed that the top area looks exactly the same. So I'm wondering as you go deeper to the fuel injectors, are the parts and placement exactly the same.

[@rogeliogarcia8195]

Such good videos

[@codywimberly8964]

I bought one the guy just replaced the fuel injectors and said it never ran good again he said it was missing on two cylinders or there is air in the lines but it does run but is really rough any suggestions

[@gynell2043]

Since you unplugged the negative terminal and had to remove the throttle body, do you have to do a relearn process on the throttle body?