Question about 2003 Chevrolet TrailBlazer

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2003 trail blazer running and shut off when i turn the A/C on the it start happening after changing the battery and one of the spark plug case.

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Clean your throttle body with carb cleaner, with the battery un hooked. When done, hook the batter back up and drive around for 5 or so miles which will re-set the computer. Your problem will be solved. VERY common problem, which I myself have experienced.

Posted on Nov 17, 2010

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Trail blazer 2003 4.2 po301


Cylinder #1 misfire. If the engine is running fine the code will reset on it's own after 40 cycles of the ignition key. If the engine is running poorly it could be due to bad spark plug or coil pack.

Jan 14, 2013 | 2003 Chevrolet TrailBlazer

1 Answer

03 trail blazer won't start turn key nothing let set over night will start then shut off and won't start again just put new battery in still doing it some times it will run for a week then do it...


This might be due to a failing antitheft system. Very common on GM vehicles. This link explains. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Sep 06, 2011 | 2003 Chevrolet TrailBlazer

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My 94 s10 blazer won't start. Turns over hard. Pulled plugs, turns over easy. ECM fuse replaced-was bad. Fuel pump good,spider gets gas on plugs,distributor was loose,good spark on plugs.Plugs back in-...


what happened the last time it ran

did it run hot or ??

Check the oil - if none -- you could have turned a bearing. In that case, the next would be a compression test.

Best regards
Ck

Aug 18, 2011 | 1994 Chevrolet S-10 Blazer

1 Answer

I have a 03 Chevrolet trail blazer and i change the battery and after that when i turn on the a/c the car want to turn off.......what the PROBLEM?


You need to have the throttle body cleaned, make sure that both the front and rear sides get cleaned thoroughly.

Aug 11, 2011 | 2003 Chevrolet Blazer

1 Answer

Where are the spark plugs located on a 2003 trail blazer


They are mounted down in the head, underneath each coil pack. You'll need to remove the top engine cover to gain access to them.

Oct 30, 2010 | 2003 Chevrolet TrailBlazer

2 Answers

Changing spark plugs in 2003 chevy trailblazer


CHANGING SPARK PLUGS IN TRAIL BLAZER. YOU NEED TO REMOVE AIR INTAKE RESONATOR AND IGNITION COILS.YOU NEED LONG 3/8 EXTENSION - SPARK PLUG SOCKET - 3/8 RATCHET WRENCH. NEED SPARK PLUG GAUGE AND A TORQUE WRENCH.YOU CAN GET BY WITH OUT ONE LONG AS YOU DONT OVER TIGHTEN PLUGS AND STRIP OUT ALUMINUM THREADS.

Jun 26, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

2002 blazer crank but wont start


2 things that you have to check on no starts every time. Spark at spark plug and fuel. Turn key to run position and listen at gas tank for fuel pump to run you should hear a whining noise. This will only happen for 3 to 4 seconds then it will shut off until engine starts. You can turn key off then to run every 3 to 4 to listen for fuel pump. You may hear the relay click off in engine area even if pump does not run. Fuel pump failure is pretty common. If pump is running pull spark plug out or put a spare plug into spark plug wire and have someone crank engine set plug on engine and watch for spark. This will give you a starting point. Hope it helps.

Mar 30, 2010 | 2002 Chevrolet Blazer

1 Answer

Will not start wants to turn over but no fire


Try the coil, But first take a spark plug out and put it back in the cap, then rest it on the engine somewhere and then get a friend to turn over the engine to see if there is a spark at that plug, if not then check the lead between the coil and the distributor cap for good connection, if you still dont have a spark it will probably be the coil mate, Having said that if you have a healthy spark then check you have a fuel supply, Colin.

Dec 30, 2009 | 2003 Dodge Caravan

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