Question about 2003 Chevrolet TrailBlazer

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How to remove and install ecm in 2003 trailblazer

I need to remove a bad ECM (main computer) and install a new one.

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 625 Answers

SOURCE: OBD2 CODES P0131, P0137, P0151

check for every posible loose ground arrownd the engine block
i had foud that many times and technicians have very hard time to find it if you see some thing wires atached to the engine block pull gently on it to see if they are open internally
and check also for clean and tie circuits at batterie and starter

Posted on May 29, 2008

Ajkill
  • 2035 Answers

SOURCE: re: diagram for location of ECM (Engine Control Module) not specifically identified

Well i searched this link all got was this information hope it helps you :

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800bfd7d


Good luck..

Posted on Aug 18, 2008

  • 9 Answers

SOURCE: 86 s10 4x4 blazer wont

Is it fuel injected or carb??? If it is carb try using starting fluid to see if it will fire. If it does you have a fuel problem.

Posted on Dec 28, 2008

  • 55 Answers

SOURCE: l203 chev truck no power ecm codes p0131, p0137, p0151, p0157

these are all O2 sensor circut problems

Posted on Sep 20, 2009

  • 921 Answers

SOURCE: S-10 Cranks but won`t start jumpacross ECM battery

how about fuse..is it bad?

Posted on Oct 08, 2009

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Wont turn over wont boost ap hand goes to 0


With limited info I would say starter is at fault. That would would account for no boost from outside source and when turn key the volt meter goes to zero.

Apr 18, 2014 | 2004 Chevrolet TrailBlazer

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hi not on changing the mechanical part the ecm and transponders already match as long as u dont have to change ecm no program is required ex if u have a four cyl and u installed a 6 cyl u need new ecm that wont match including the wiring and ecm that would have to be programed to match bcm body computer module danny

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Multiple engine codes 2001 chry town and country engine barely runs it surges, spits and sputters the main codes are po601 and po206


P0601 : ECM internal Failure.
it said that the ECM is unable to communicate with the SPI line.
probable causes:
shorted input sensor
shorted electrical circut
failed ECM .
------------ P0601 is Internal Controller Failure- Common repair is Install new PCM and program it. -------- The other code is related, Best thing to do, so you do not replace every part by trial and error, in this case have a pro hood up his computer and he can break it down to the main cause to fix that code, and the other one that is related. Thanks, MIke. Please rate my free advice accordingly

Sep 19, 2011 | 2001 Chrysler Town & Country

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How do i find and swap computer chips


ECM LOCATED IN THE PASSENGER COMPARTMENT BY THE RIGHT SIDE KICK PANEL OR BEHIND GLOVE BOX.WHEN YOU FIND ECM.LOOK AT PART NUMBER ON ECM MAKE SURE PART NUMBER RIGHT.NOW ECM HAS A MEM - CAL ACCESS COVER.REMOVE ACCESS COVER.TO REMOVE COMPUTER CHIP OR MEM - CAL.FIRST YOU USE TWO FINGERS PUSH BOTH RETAINING CLIPS BACK AWAY FROM THE MEM - CAL AT THE SAME TIME GRASP THE MEM - CAL AT BOTH ENDS THEN LIFT IT UP OUT OF SOCKET. WHEN INSTALLING NEW COMPUTER CHIP OR MEM - CAL MAKE SURE YOU HAVE RIGHT PARTS NUMBER IF NOT YOU WILL DESTROY NEW CHIP.WHEN INSTALLING NEW COMPUTER CHIP OR MEM - CAL PRESS ONLY ON THE ENDS NOT THE MIDDLE.WHEN DONE.DO A DIAGNOSTIC TEST.TURN THE IGNITION SWITCH ON.ENTER DIAGNOSTIC MODE AT THE ALCL.SEE CODE 12 ALL IS GOOD IF YOU SEE CODES 41 42 51 OR 52 YOUR MEM - CAL OR COMPUTER CHIP NOT COMPLETELY SEATED OR DEFECTIVE.TO BE ON THE SAFE SIDE TAKE WHOLE ECM CASE TO DEALERSHIP LET THEM GET YOUR PART NUMBER OFF OLD ECM UNIT.THAT WAY YOU CANT GO WRONG.

Sep 14, 2010 | 1988 Chevrolet K1500

1 Answer

The car just get repair but know it wont star the injector dont open to spray the gas


Hi,

Check that the computer is hooked up and getting power.
This vehicle has what is called throttle body injection. The injectors are controlled by the ignition module and the ECM (main computer). Check the ECM fuse in the fuse box first.
Check fuel pressure with a GAUGE. The fuel pressure should be 9-13 lbs.If you are getting the right pressure in your main line there is a pressure regulator diaphram in the TBI that could be bad.

Check you ground wires from the body to the engine if that checks out then you may have a broke wire or bad injector drive in the ECM

Make sure you have fresh fully charged battery installed.
These are the easiest and least expensive things to do. If this doesn't fix it you may have a bad Ignition module and or a bad ECM.

Have a nice day.

Aug 03, 2010 | 2002 Nissan Altima

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PUT NEW ECM IN 2002 NEW BEETLE AND ECM WILL NOT PICK UP FUEL PUMP


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Sep 01, 2009 | 2003 Volkswagen New Beetle Convertible

1 Answer

Can I replace the ecm in my 2003 mazda 6, can I


you can do it your self but the computer/ecm will need to be flashed. any Mobile lock smith can re flash the computer to your key for a small fee

Mar 09, 2009 | 2003 Mazda Mazda6

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