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2004 chevy trailblazer_ls_ext
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Discussion Starter · #1 ·
:bonk:I tuned up my TB this past weekend 165,000 miles on it. I drove from TN to Illinois yesterday and it did fine, even got about 24 MPG. Ran great, no trrouble what so ever. I got up this morning, started right up. I went back in the hotel, came out to start it to go somewhere, it started and ran rough for like 3 seconds then died and now I cant get it started. I switched relays, banged on the gas tank while having someone try to turn it over and nothing is working. Please help as I leave in a couple of days, thanks in advance!!
 

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2007 chevy trailblazer_ss_3ss
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767 Posts
What exactly did you do for your "tune up"? Which spark plugs did you use? (If you didn't use AC plugs, pull 1 out and check it). Also, maybe a clogged fuel filter?
 

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2003 Chevrolet Trailblazer LT EXT
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473 Posts
I think you are going to need a code reader to assist with your solution.

-did the CEL come on before the engine died?

you could have any number of things going on.

-wish more help could be offered, sorry
 

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2004 chevy trailblazer_ls_ext
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Discussion Starter · #4 ·
Powerfreak....I used the AC Delcos 41-103's and I had the oil changed, cleaned the camshaft solenoid, replaced two coils, boots and air filter and put Lucas fuel treatment in it about a week ago. Could it be possible that the crap from the fuel tank that got cleaned out is clogging the fuel filter?

Wcosh.....the CEL hasnt and was not on at all :/.....where should I start. I pulled the plugs out last night and brought them inside to look at under the light. They are dirty but not bad, the only thing is that there is yellowish crud on the ceramic part of them. Looks like it was burnt on possibly. I am going to put them back in right now and check the ecm wires and all that. If the relay was bad and I switched it with the windshield washer one it would work temporarily right?
 

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2007 chevy trailblazer_ss_3ss
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Do you have the "serviceable" fuel filter or the one in the tank?

I would try and determine if it's getting fuel and spark, and go from there.
 

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2003 Chevrolet Trailblazer LT EXT
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I would go back and check all the electronic fittings of all the things you touched in your recent service
-check the connector on the camshaft solenoid...making good connection? none of the pins bent?

I am never convinced that a fuel filter would cause that kind of issue so fast.
The fuel today is really good quality.
 

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2004 chevy trailblazer_ls_ext
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Discussion Starter · #9 ·
i broke part of the platic wiring harness that goes to the camshaft solenoid and a tiny bit of the metal pin is exposed would a bad connection on that cause it to not start?
 

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2003 Chevrolet Trailblazer LT EXT
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if it was wet it might cause a concern.

I would suspect the items that were recently touched or removed and then reinstalled first.
I hear you when you say it was 2 weeks ago, but if it ran fine before....and it's not running now I would suspect the easy things first
 

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2008 chevy trailblazer_lt
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get some quick start and spray it into the intake somewhere. IF it even attempts to start, then you know its likely a fueling issue. IF it doesn't do anything, you are looking at some electrical / computer firing issue.
 
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