[gmshades]

Here's the scoop-I have the 4.3 vin w engine/tranny stock in my '94 Jimmy. It's got 81,000 miles, and the tranny fluid smells and looks burnt. The tranny mech said I have a 50% chance of causing problems by putting new fluid/filter in. At 50,000 miles, 100% ok, but at 100,000 miles, its 100% not ok. Something about going from the old thick fluid to new thin might cause slippage. Right now I have no problems with the tranny, but don't want to have a dead tranny if I can avoid it.

So in short, if this was your Jimmy, would you change it and take the chance?

Thanks -=Glenn=-

 

[rustout 89]

I have asked myself the same thing for the last 30K on my 89 4.3 auto 4x4. I have found no one to advise me to change the trans fluid after 80k with no prior cange. All advise has been the same - do not touch it -- . I did change the fluid in the transfer case and differentials at 100K.. All I can say is I have 125k now without a trans fluid change and still no problems.