TrailBlazer 2002-2009
2023- The TrailBlazer, originally introduced as an upscale Blazer, was produced from 2002 to 2008 with a powerful I6 engine and with a monster V8 offered in the Trailblazer SS
Platform: GMT 305, 360, & 370.

will it work

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Old Sep 2, 2011 | 2:12 PM
  #1  
ruddler's Avatar
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Question will it work

I need to replace the engine in my 2003 trailblazer it has a 4.2L i6. I found a 2004 4.2L i6 and wanted to know if it will work before I buy it. not sure if there were any changes to the engine between 03 and 04.
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Old Sep 2, 2011 | 2:52 PM
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GTS 2.4's Avatar
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I dont see why not as long as the transmission lines up. Id call a Chevy service center and ask them. they could probably tell you in about 30 seconds
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