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Old 02-16-2020, 03:09 AM   #1
56ClassicTruck
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4l60e transmission no forward gears only reverse

I been looking everywhere for in formation on a 4l60e on my 2001 GMC Yukon if I put it in drive nothing no shifting in reverse itís fine now if I put it in 1st manually I can shift up to 3 third till I come to a stop and start again in 1 st gear?? Anyone else ever had this happen?
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Old 02-16-2020, 04:56 AM   #2
EVRLET
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Re: 4l60e transmission no forward gears only reverse

Sounds like a forward sprag issue
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Old 02-16-2020, 04:06 PM   #3
56ClassicTruck
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Re: 4l60e transmission no forward gears only reverse

Quote:
Originally Posted by EVRLET View Post
Sounds like a forward sprag issue
What does that mean what is the fix?
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Old 02-16-2020, 07:31 PM   #4
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Re: 4l60e transmission no forward gears only reverse

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Originally Posted by 56ClassicTruck View Post
What does that mean what is the fix?
Time for a trans overhaul...the forward sprag has failed...common issue...it is overridden by placing the trans in 1st....

You will not get 4th or overdrive...

Have it overhauled and if necessary upgraded....

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