Question about 2004 Chevrolet TrailBlazer
There should be a threaded port on the fuel line goining to the throttle body. it will look like a valve stem. any mechanic that is worth something will put a pressured gage on it to test. Will indicate if fuel pump is holding pressure. alsomay be a check valve.
Posted on Apr 22, 2013
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Posted on Jan 02, 2017
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.
Posted on Mar 05, 2010
Testimonial: "Thanks for your info, appreciate it. SpotsDog"
The 2004 Trailblazer has two fuse panels, one in the under hood and one under the middle row seats. The radio fuse is marked RADIO fuse # 41 and is a 15 amp fuse located in the rear fuse panel. To access the rear fuse panel flip the seat behind the driver to the upright position, under it you can see the fuse panel and a diagram should be on the under side of the cover.
Good luck and hope this helps.
Posted on May 26, 2009
Fuel could be an issue, although it is not that common on these. You should check for a restricted fuel filter first before changing pump.
Posted on Jun 23, 2009
Check fuses & bulbs first, The headlight bulbs may be twin filiment type in which case the lower filliment may be blown & the upper filliment or highbeam will still work in this case replace your bulbs. But these models are renowned for having negative earthing problems. Follow the negative (-) or black lead from the battery to the point it is bolted to the vehicle. make sure there is good metal on metal contact with the negative lead & the vehicle. Then check the negative that comes out of the lowbeam headlight socket insure clean metal on metal contact. If you still cant find a fault, contact a chevy technician.
Posted on Jul 13, 2009
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