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tsw5013 03-01-2006 06:33 AM

where the fuel filter and help with missing
I have a 2003 trailblazer and can't seem to locate the fuel filter. I have begun to experience a miss when you accelerate and am guessing that perhaps this is the problem. If anybody has any other thoughts please share. I recently also began having the CES light come on and the code is p1481. I think that may be tied to the fan however as it sound like it is running on high sometimes (it makes it sound like the truck is in low gear). It is a vortec 6 cylinder. Also I am not the smartest guy in the world when it comes to new cars but I can't seem to find the spark plugs either.


302 Z28 03-01-2006 06:36 AM

On Chevy trucks and SUV's they normally located the fuel filter along the frame rail under the drivers seat.


1931 steve 03-01-2006 06:46 AM

Its right next to the fuel tank, just fallow the fuel lines and you will find it.


tsw5013 03-01-2006 06:50 AM

thanks for the info. again not to seem stupid, but does this thing have hidden spark plugs somewhere?


1931 steve 03-01-2006 07:15 AM

This is a coil over plug set up, plugs should run down the center of the valve cover, the only thing you will see is 6 identical looking things that go through the valve cover, they will heve a electrical connector on the top, with a hold down bolt. remove these and you will find your plugs.

73oldsman 03-01-2006 12:01 PM reads "P1481 Fan Secondary Low With High Fan On"

tsw5013 03-01-2006 02:59 PM

thanks for the info. can you put in english what fan secondard low ----- means.


73oldsman 03-01-2006 11:26 PM

I'd just be guessing. You may want to call the dealership on this one. Sounds to me like the fan is running low speed when hi speed needed, but not sure. Maybe someone else reading this post knows? Anyone, anyone, Ferris?

tsw5013 03-02-2006 07:16 AM

you all have been very helpful and I wanted to ask another question. I post this question seperately before thinking to just add it here. I now have what appears to be a flooding (bogging down) issue. From a stop it does not do it, but when you are traveling and have to pass somebody and punch it it bogs down and sounds like it is flooding itself then takes off. Any advise?


73oldsman 03-02-2006 08:05 AM

Have you changed the fuel filter yet? Plugs?

tsw5013 03-02-2006 08:23 AM

I changed both last night. Had a bit a trouble with number one plug as they built up all that plastic around it but got it changed. ANy other ideas?


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