Engine,trans specs

Ricky lester

Original poster
Member
May 19, 2017
1
Matewan wv
I have a 04 trailblazer lt has bad motor and trans can anyone tell me what yrs enterchange ive had some ppl say 02-09 and some say noting but 04 plz help
 

Tiggerr

Member
Jun 6, 2013
1,324
Perrysburg, OH
Others will chime in I'm sure but I believe 02-07 will work... there were a few changes in 06 but they'll work with a little work... 08-09 would be real tough to swap from what I understand, due to the change in reluctor on crank...
 
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Mooseman

Moderator
Dec 4, 2011
25,262
Ottawa, ON
Did you have a look in this section's FAQ: Vortec 4.2L I-6 ?

One thread in there that is very informative:
'06 4.2 swap into an '05

For transmissions, I believe '02 to '06 are the same. Something changed in '07 that there is a different shift kit.
 
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Reprise

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Jul 22, 2015
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since his is an 04, I think he can go w/ a 4l60e from 99-04 (if pulling from a non-TB, try and get one from a truck, so you get the right tailpiece. 4wd matters too. if the TB has it.)
Does the TCM addition in 05 affect him at all?
 

Mooseman

Moderator
Dec 4, 2011
25,262
Ottawa, ON
And I would imagine the torque converter too.
 

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