Are 2004 and 2006 Chevy trailblazer LS 4x4 engines swappable?

Asked by Guru95LJ13 Jan 07, 2021 at 11:45 AM about the 2006 Chevrolet Trailblazer LS 4WD

Question type: Car Customization

Can I put a 2004 Chevy trailblazer LS 4 wheel drive 4.2
engine into an 06 model?

1 Answer
11,605

FJ4072 answered 3 years ago

Anything can be done, but there are differences between the two years. 06+ has an MAF sensor and temp sensor is in a completely different location. If you do the swap, most importantly is to bring the PCM that came with the new engine. Otherwise, using the old PCM, won't work.

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