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Gary, GMC Technician
Category: GM
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Experience:  15 years gm master tech/15 years ASE master tech
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GMC: ton Z71..V8..Trouble code 82 for 1-2 shift solenoid.

Customer Question

93' GMC 1/2 ton Z71, 5.7 V8, 4L60E transmission. Trouble code 82 for 1-2 shift solenoid. Truck does shift harshly from 1st to 2nd. Research shows that perhaps this is common with this transmission? Milage is 400,000. Is this something to worry about? Recently did change transmission filter with fresh fluid, thought might help. Old fluid was dark. Thanks!
Submitted: 5 years ago.
Category: GM
Expert:  Joe Barfield replied 5 years ago.
Hello, after 400,000 the valve body bores would most certainly be worn,which in turn will cause a harsh 1-2 shift. you could remove valve body & replace it, or re-man your self however the kits are a little expensive to bore valve body. the best replacement ones are called....Sonic valves.....Thanks Joey
Customer: replied 5 years ago.
Joe,
Thank you. Because of the trouble code set, would one need to replace the 1-2 shift solenoid as well as the valve body? Let me know what if any additional information you might need.
Thanks!
Expert:  Joe Barfield replied 5 years ago.
Hello,To tell you the truth at 400,000 miles,id just let it ride out the rest of its life. Then update the transmssion at that time,because of the extreme high mileage on it....average life is only about 140,000 for those trans....Thanks Joey

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