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What causes the 4l60e transmission to lose all the gears when driving.

Tiny
MRSTEINY64
  • MEMBER
  • 1999 CHEVROLET SUBURBAN
  • 177,000 MILES
Was driving down the freeway and within one mile of feeling the transmission start to slip and motor rpm's increasing, I had lost all gear's and was unable to continue driving my vehicle any further. It had to been towed home. There was no warning sign's that the transmission was going to fail nor did any warning lights appear in the dashboard.
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Wednesday, November 16th, 2011 AT 3:41 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,128 POSTS
If no lights came on, chances are it isn't electrical. Check to make sure the fluid is clean and full. If it is, you need to have fluid pressure checked. The converter or front pump may be bad.
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Wednesday, November 16th, 2011 AT 3:52 AM
Tiny
MRSTEINY64
  • MEMBER
  • 2 POSTS
If it was the torque converter that crack or failed, shouldn't there be fluid leaking out.
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Wednesday, November 16th, 2011 AT 10:32 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,128 POSTS
No. They can come apart internally.
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Wednesday, November 16th, 2011 AT 5:28 PM

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