Kyle - HELP Please!! Trailblazer Fuel Sending Unit
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Kyle - HELP Please!! Trailblazer Fuel Sending Unit - 4/15/2008 9:18:46 AM
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mladsig
Posts: 2
Joined: 7/17/2005
Status: offline
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As this is my first post let me start by saying thank you to all of you who have contributed over the years providing so much information on Blazer repairs. Collectively you all have taken myself and my 1998 Blazer from 17k to now just passing 172K and going strong. I have learned it all from you guys from the plugs to the ball joints and everything in between.
Now for my problem. I also have a 2005 Trailblazer LT V6 4wd. Recently the fuel gauge has stopped indicating accurately and erradically moves from full to empty and everywhere in between with no apparent logic. It does this backing up, pulling foward, and simply cruising down the road. I am headed in the direction of the fuel sending unit(or fuel level sensor as Chevy calls it), located in the tank. I have never dropped a tank before, and am looking to see if you guys have any suggestions, perhaps a copy of the manual on this procedure, and any advice. Thanks again for all of you who have helped me along the road with my other Blazer through all your posts.
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RE: Kyle - HELP Please!! Trailblazer Fuel Sending Unit - 4/15/2008 3:29:59 PM
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swartlkk
Posts: 13664
Joined: 5/1/2005
From: Waterloo, NY
Status: online
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Ok... Few things here... Just a point of clarification. If it is a 2005 Trailblazer (GMT360/370 platform - ie. not S-series), then it would either have the 5.3L V8 or the 4.2L I6. If it is a 2005 S-series Blazer, then things are a bit different, but not drastically. Since you posted in the GMT360/370 platform, I'll take that cue and go forward with the procedure for the Trailblazer. For the fuel pump, the procedure is not different between the V8 and the I6 configurations, but it is different if it is a LWB or SWB (long/short wheel base).
Seeing as how you didn't mention that it is a LWB, I'll assume it is the SWB.
Check this out:
GMT360 Fuel Tank Removal
From there the sender is pretty easy to replace. You just have to loosen the retaining ring and remove the pump.
I hope my part number is wrong though... PN I show is 15077623 and lists for $366... Just for the gauge sender...??? WOW! Hope I never have to do this.
Now, maybe before doing all of this work, dump TWO (2) 20 gallon treatments of Chevron Techron Concentrate PLUS (make sure it's the plus) next time you fill up with fuel (before filling dump BOTH of them in, then fill the tank). See if that helps the condition. I use a bottle at every oil change on all of my vehicles. With the sulfur content of fuel now-a-days, its no wonder it doesn't happen more.
_____________________________
Kyle-
2004 Rainier
1970 Chevelle - Resto
1974 K5 Blazer - Resto
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