I need a trans for my 1997 AWD Astro. I know it's a 4L60E (that's all I know). Will any 4L60E trans from a 1997 GM 4wd product fit? What other years and products should I be looking for? I have someone that will change the trans for me but I have to find it.
The key distinction of the Later 4L60-E (1996-2010) from the Early 4L60-E (1992-1997) or 4L60 (1990-1992) or 700R4 (1982-1989) is the six-bolt "hex" rear output or tailhousing / adapter pattern. The previous versions featured a four-bolt square bolt pattern at the adapter or tailhousing. Additionally, the removeable bellhousing is also another distinguishing feature.
Yes, I would look for a trans near your same year but any 4l60e from 96 and up till about 2004 should work , like the other post said if you are keeping your same transfer case just double check your replacement trans has the same bolt pattern as the transfer case. 95 trans and below had four bolt pattern and 96 up has 6 bolt pattern...side note, if your are going to look for a newer trans, the ones with a 12 o'clock bolt hole in the bell housing came out of a V8 and won't work. The bell housing is longer and the front output shaft is longer.
If I had to guess, it was the info on telling the differences of the 4l60e thru the years (4 bolt, 6 bolt).
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