Harsh engage into reverse and drive.

[dhumboldt12]

It doesn't matter if it from park or neutral. It is a 4L60, I believe. 16 bolts in the tranny pan. I can't read the glovebox tag. It engages harshly and then skips back or forward. The yokes are good. And I believe the pinion bearing is good as well? There's no movement whatsoever in the yokes. Thanks.

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[BIG_KID]

What's the Engine RPM when selecting gear

 

[dhumboldt12]

In park when cold it's about 1500 and it drops down a ways. Maybe to 1200. I think I might have narrowed it down to a bad u joint. Seems to make sense. It leaks a little trans fluid where the driveshaft meets the t case at the u joint. Is my thinking correct?

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[dhumboldt12]

I can take a video later. But it clunks going from R to D, D to R, P to D, P to R, N to D, N to R.

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[kennythewelder]

A bad U joint, will do this, but 1500 RPMs is to high. Even 1200 is to high. Idle should be around 750 to 800 RPMs in N or P ,and around 650 to 750 in gear (drive or reverse)

 

[dhumboldt12]

How about when it's cold? Because when it's warmed up to operating temp, it's about where it should be.

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[dhumboldt12]

I'm also getting that vibration when slight turn going slow that's reminiscent of a u joint.

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[Supercharged111]

That idle is too high regardless of cold or warm. It should never be over 1000 except for a second or 2 when it initially fires. What's the temp outside?

 

[dhumboldt12]

It's been between 20-40 this week.

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[dhumboldt12]

I don't have a check engine light or anything. It doesn't suck more gas at all. Maybe the old TB gasket?

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