not shifting very good into overdrive. it pulled code po751. what do i need to do to fix this?
Dec 2, 2022 at 9:08 PM
Code po751, transmission not shifting properly?
2001 GMC YUKON
BLESSING4334
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Hi,
There are two different transmissions available on this vehicle. Do you know which you have?
4L60-E / 4L65-E Automatic Transmission
4L80-E / 4L85-E Automatic Transmission
Also, is this the only code set? The issue is similar for both transmissions, but there are different basic tests. If you look below, pic 1 is the diagnostics for the 4L60 and pic 2 is for the 4L80.
Let me know if there are other codes. Also, let me know if the fluid is both clean and full.
Take care,
Joe
See pics below.
There are two different transmissions available on this vehicle. Do you know which you have?
4L60-E / 4L65-E Automatic Transmission
4L80-E / 4L85-E Automatic Transmission
Also, is this the only code set? The issue is similar for both transmissions, but there are different basic tests. If you look below, pic 1 is the diagnostics for the 4L60 and pic 2 is for the 4L80.
Let me know if there are other codes. Also, let me know if the fluid is both clean and full.
Take care,
Joe
See pics below.
Images (Click to enlarge)
Dec 3, 2022 at 11:35 PM
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