Possibly tranny issue

97BambiBasherPSD · Jun 23, 2013

I have an 04 KR with 139k on it and the tranny has been acting weird lately. If I go to reverse or drive it hesitates a few seconds and then goes into gear. It either goes in easy or you feel a solid thud when it does it. Other times it goes right into gear as soon as you move the lever. I'm new to the 6.0s so any help is appreciated. Thanks.

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Gary · Jun 24, 2013

What does it have for codes? I have seen PC-A solenoids cause slow engagement of reverse and drive, but the problem was 100% of the time.

Mark Kovalsky · Jun 24, 2013

Old, worn transmission fluid can do this. If you can find a place that has a heated machine to change the fluid you can get almost 100% of the fluid changed. Only use MERCON SP or MERCON LV fluids!

97BambiBasherPSD · Jun 24, 2013

there arent any codes unless they are soft codes. i was gonna check my tranny fluid and see if its low or burnt. its got 139k on the truck

ncdzl · Jun 24, 2013

Mark Kovalsky said:
Old, worn transmission fluid can do this. If you can find a place that has a heated machine to change the fluid you can get almost 100% of the fluid changed. Only use MERCON SP or MERCON LV fluids!

Always heard and read a heated flush creates a **** Ton of issues w these...especially if the fluid hasn't been maintained

97BambiBasherPSD · Jun 25, 2013

What kinda issues can come up?

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Mark Kovalsky · Jun 25, 2013

ncdzl said:
Always heard and read a heated flush creates a **** Ton of issues w these...especially if the fluid hasn't been maintained

Always heard that was bull.

ncdzl · Jun 25, 2013

Mark Kovalsky said:
Always heard that was bull.

I've never personally dealt w it...but have read threads on here advising against hot flushes...maybe someone that has encountered it will chime in

06-sixoh · Jun 27, 2013

Sounds like the start of my tranny issues. Good luck friend. Change oil...

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97BambiBasherPSD · Jun 27, 2013

Was yours toast?

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06-sixoh · Jun 28, 2013

I had to have it towed to the tranny shop. Toast enough? Lol

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97BambiBasherPSD · Jun 28, 2013

nice and crispy hahaha

97BambiBasherPSD · Jun 29, 2013

I haven't looked or checked on anything and it's been acting just fine now. I don't get it

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97BambiBasherPSD · Jul 29, 2013

Well I checked the fluid and it's right up to the correct area. It's nice and red still. Not burnt at all. Would putting in some Lucas oil help at all?

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06-sixoh · Jul 29, 2013

I guess as a preventive measure, it wont hurt. I dont know if that stuff actually works or not.

swinky · Jul 29, 2013

97BambiBasherPSD said:
Well I checked the fluid and it's right up to the correct area. It's nice and red still. Not burnt at all. Would putting in some Lucas oil help at all?

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No, it will work good at first but then it will get bad in a hurry. If youre talking about that stop slip stuff.

Vinny07psd · Jul 29, 2013

Solenoid....?

97BambiBasherPSD · Jul 30, 2013

I'm wondering that too but I have no codes at all. Someone told me there's a check ball in the lines that can cause this issue too. I was told to take it out. Any truth to this?

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Mark Kovalsky · Jul 30, 2013

In the lines? In what lines?

swinky · Jul 30, 2013

Vinny07psd said:
Solenoid....?

Dd solenoid controls reverse right. Get a new dd solenoid from steve at absolute. If it doesn't fix it it's an awesome upgrade anyways. My 3-5 shift is amazing now.