Question about 1988 Chevrolet K1500

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GM experts please advise on THM700R4

My main question about this transmission is just how long can one last? I have had to replace the 700R4 in a 1986 GMC pickup because of a completely destroyed bearing, and am now looking at buying a 1984 suburban that is pushing 200 000km, has hauled a trailer, and still SEEMS to be doing fine other than some slightly eratic engaging of the torque converter clutch. How long can I expect this tranny to last, assuming that it has had regular fluid and filter changes, and had the benefit of a cooler? Cameron Walker 1988 Chevy 1500

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  • cedar_sound Jul 19, 2008

    i have a new 700r4 transmission, new tourqe converter and my tv cable is set but it wont shift out of 1st gear

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A build these every day if u got one that works go with it. your erratic lockup could use a higher pressure third gear switch. unless somebody did the checkball in the tcc solenoid trick.

Posted on Aug 17, 2008

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Posted on Aug 09, 2008

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375,000 I believe is the lifetime

Posted on Jun 02, 2008

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