2002 Chevrolet Trailblazer EXT 4.2L GM Programmed Engine Computer number 12576463 | ECM ECU PCM | "Programmed specifically for your VIN"

2002 Chevrolet Trailblazer EXT 4.2L GM Programmed Engine Computer number 12576463 | ECM ECU PCM | "Programmed specifically for your VIN"

  • $ 99.95
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If the VIN or Part Number are invalid we will not be able to ship until fixed


Compatible with 2002 Chevrolet Trailblazer EXT 4.2L GM Engine Computer Number 12576463 Programmed to your VIN | ECU PCM ECM

This listing is for one computer number 12576463 ECM PCM ECU (Engine control module) that is programmed for your vehicle using your V.I.N. (Vehicle identification number) to exactly match your vehicle.

To purchase an engine computer you will need to provide us with your V.I.N. Please attach as a note during checkout. We will not be able to ship until we have a valid V.I.N.

  • All computers tested for functionality
  • No core charge, you keep your old E.C.M.
  • One year replacement warranty
  • Will ship within one business day of payment

After receiving your replacement ECM, a relearn may be required. Instructions are included in the packaging.

We use Alldatapro for our repair information. If you need diagnostic information please let us know and we can help. We are also a member of IATN (International automotive technicians network) a valuable resource of auto repair information.

Same day shipping if ordered before 3:00 EST (Mon. - Fri.)


We do not use or access AcDelcoTDS.com to program this computer.

Some other sellers of computers do not disclose that these procedures must be done until you have bought the product --- others claim that their units are 100% plug and play. To be 100% plug and play they would have to alter the function of the computers original design and you might lose your antitheft protection and the ability to detect engine misfires. The proper way to replace an engine computer and be sure your vehicle remains in its original condition is to do both the antitheft relearn and crankshaft variation relearn if applicable. Please contact us for more info or if interested in a solution.