Question about Chevrolet Astro

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I have a haynes repair manual for my 1993 chevy astro van ext, its a 4.3 and has the 4L60-E tranny it reads out error code 81 and theres know answer for the code in the manual,the problem im having is the tranny wont shift properly it goes rite in to 3rd,doesnt go into 1st to pull out but i can manualy shift into 2nd to 3rd and wont go into overdrive

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Code 81 is brake switch input circuit.The being stuck in third is a limp mode because of a hard code being set.If you repair or replace the brake switch issue you should be fine on the shifting issue.Good luck and let me know if i can help.

Posted on Mar 13, 2011

  • 60 grit Apr 05, 2011

    I have the same problem and I changed the brake light switch no change. I read somewhere else that code 81 is the 2-3 shift solenoid could they be related

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