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if its starting your getting fuel --check fuel pressure at rail under hood --the envoys/trailblazers have an external fuel filter possible clogging or clogged the following link shows location and how to change filter How to Do Fuel Filter Chevy Trail Blazer Gmc Envoy
Hi, the fuel filter is by the front of the gas tank. but the person was right about the strainer on the fuel pump but that is just the first filter to keep large sediments out, and secondary filter is to keep the small stuff out.
The fuel filter is on the drivers side frame rail and is a high pressure system, so you should attempt to depressurize it. Take the fuel cap off. Pull fuse for the fuel pump. Start engine, let engine die. There will still be a little pressure in the line and certainly fuel in the filter and line. I had to remove the skid plate to get to the filter, there was a hand hole, but not for my hand to work in effectively. The clips are real easy to remove with some pliers. Use a towel or rag to remove the fuel lines and protect your self from the fuel. If your new filter doesnt have the little plastic doo-hickies (technical term) on the nozzles you will need to get them off of the old on, just pull them off gently, dont break them. Put the fuel lines back on noting the flow arrow on the filter. Replace holding strap and skid plates as applicable. Replace fuel cap and fuse. Start engine, let idle a minute or so. Drive around the block a time or two and enjoy. Repeat procedure every 30,000 miles (I think that is the manual periodicity).
On 05+ Trail Blazer, the fuel filter is integral with the fuel pump inside
of the fuel tank. It is a non-serviceable part. On 02-04s, the filter is
on the drivers side frame rail at about the B-pillar. If your trail Blazer is a late 04 which means that it was build close to the 05 Trail Blazer, you may have a non serviceable fuel filter. Good luck and check under your Trail Blazer or look at your manufactured date sticker on the door which would help you indicate if your 04 is a early Trail Blazer and you'll have the fuel filter on the inside frame rail under the driver's door.
2002 Chevrolet Truck Blazer 4WD 4.3L SFI 6cyl - Repair Guide The Fuel Filter is located
under vehicle, passenger side, below seating area,
front of fuel tank, mounted on chassis. Typical fuel filter location along frame rail.
1st check to make sure air intake is opening all the way even though most vehicles are fuel injected these days there still is a idle screw located at the air intake also you might be having clogged fuel injectors
cando997, The fuel filter for the blazer is located under the drivers seat underneath the vehicle. Just follow the fuel lines from the gas tank and in the middle of the fuel line somewhere under the drivers seat is a metal cannister with a fuel line running in and a fuel line running out. This is the fuel filter. I hope this helps in anyway.