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Transmission and drivetrain related components. Discuss automatic and manual trans repairs and performance or talk about driveshafts or rear-ends and differentials. Diagnostics of 4-speed, 5-speed, or even 6-speed transmissions.

High Mileage Fluid Change on New 1500?

Hey All,

First post! Pumped to get involved with the forum more.

Anyway, I just acquired a '99 silverado, 5.3L with the infamous 4L60E. Bought it with 178,640 on the clock, however she runs like a dream (1 owner, very well maintained). I would absolutely love to take this thing to 300k (and over), so I'm hitting everything I feel like I should in terms of preventative maintenance early and often.

I initially thought changing ...
Read more : High Mileage Fluid Change on New 1500? | Views : 153 | Replies : 9

Odd noise when moving forward after reverse

So lately I have noticed a sort of whining noise after I have backed out of a parking space and start moving forward. The noise lasts for about 50 feet and then I don't hear it again. It makes the noise when the truck is cold and when it has been fully warmed up. I wish I could explain the sound better, it is not constant but more like "Whine, Whine, Whine...". I will try ...
Read more : Odd noise when moving forward after reverse | Views : 81 | Replies : 8

4L60E - Have to back off throttle for 2nd to 3rd shifts

New intermittent but problem getting worse after warm up. So the problem is during traffic trans will only shift into 3rd if I back off throttle completely. I've changed the fluid and filter but no change. Funny thing is trans seems normal until heavy traffic and lots of local shifts. I looked at the first sticky and several searches but no luck. Idea's?
Read more : 4L60E - Have to back off throttle for 2nd to 3rd shifts | Views : 26 | Replies : 0

Friction Modifiers?

Just changed the rear diff gear oil in my 2005 Z-71. I used 75W90 synthetic with friction modifiers. Then I came across info that said I did not need the FM's. Is this a problem? Am I gonna need to do it again without the FM's?

I've done this before but don't remember exactly what I used.

Read more : Friction Modifiers? | Views : 68 | Replies : 2

Driveline Clunk on acceleration

Well, I search for a while and didn't really find a method to fix the issue on my 2011 Silverado 1500 2wd crew cab but did find ideas and happy to say, as of now, the problem is 100% fixed. Not sure what years this would apply to but pretty sure most would. I put a 1 1/8" x 3" compression spring in the slip yoke where it slides into trans... and it worked like ...
Read more : Driveline Clunk on acceleration | Views : 110 | Replies : 7


My stabilitrack and traction control lights are on and transmission seems to slip in drive but does fine if you shift manually any ideas
Read more : Stabilitrack | Views : 46 | Replies : 1

Which Amsoil ATF?

about to order some ATF and looked and there are several available? Which is the best to purchase?

14 quarts for a full fill and replace?

Read more : Which Amsoil ATF? | Views : 153 | Replies : 20

Help my truck is falling apart! Help my truck is falling apart!

Wellll my 2005 Silverado 2500hd 6.0L is falling apart and I do not know where to start. So first thing first i have 120,000 miles on it. It is a stock truck the only thing I have done is put a after market air intake on it.

Problem number 1: Driving through town my transmission will begin to over heat. It will get up to 250 degrees. The odd thing to me is when I ...
Read more : Help my truck is falling apart! | Views : 212 | Replies : 7

Rear diff

Well I am thinking about changing the rear diff fluid on my 2004 and as a mn truck the rear diff and bolts are all pretty rusty looking. It makes me a little nervous of the possibility off breaking off a bolt but not sure how strong they really are, anybody on here with a older truck with the same rusty pumpkin look tackle the job without problems? Anything to help or be aware of?
Read more : Rear diff | Views : 138 | Replies : 7

Another leaking trans cooler line thread

So....my trans cooler line is leaking, like everyone else's. I was looking through threads and saw a lot of rigged up fixes but nobody using these: https://www.amazon.com/Dorman-800-035-A ... B001EIZ5CA

3/8" compression to a barb fitting so that you can just push on some rubber line and clamp it. Seems better than putting a flare on the line and just clamping it... not to mention easier.

Good idea? Bad idea? ...
Read more : Another leaking trans cooler line thread | Views : 163 | Replies : 7


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