Tranny Issues...

[ProphetPVD]

Greetings everyone, new member hoping someone can help with an issue I've been having for about a week now. I have a 2009 H3 Adventure with the 3.7L engine, 5 speed manual and approx. 65,000 miles. It's been pretty much trouble free and the only visits to the GMC Dealer since I got it a bit over 2 years ago have been for routine maintenance. Just had the original Bridgestone Dueler A/T's replaced with Goodyear Wrangler Duratrac's of the exact same size. Took a trip to VT last week, about 600 miles round trip, and by the time we were halfway home there was I can only describe as a "meshing gears" sound when under power in 5th. None of the other gears exhibit any noise other than normal operating sound whatsoever.

Has anyone ever experienced anything like this or heard of something similar?

 

[Ghostbuster]

Greetings everyone, new member hoping someone can help with an issue I've been having for about a week now. I have a 2009 H3 Adventure with the 3.7L engine, 5 speed manual and approx. 65,000 miles. It's been pretty much trouble free and the only visits to the GMC Dealer since I got it a bit over 2 years ago have been for routine maintenance. Just had the original Bridgestone Dueler A/T's replaced with Goodyear Wrangler Duratrac's of the exact same size. Took a trip to VT last week, about 600 miles round trip, and by the time we were halfway home there was I can only describe as a "meshing gears" sound when under power in 5th. None of the other gears exhibit any noise other than normal operating sound whatsoever.

Has anyone ever experienced anything like this or heard of something similar?

Did you change the trans fluid when you should have? Pull the trans dip stick. It should be relatively clear. Not black.

Good luck.

 

[4speedfunk]

H3 manuals have a dipstick?


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[Bruces]

No dipstick. Pull observation/fill plug and make sure tranny was filled to proper level.

 

[Ghostbuster]

H3 manuals have a dipstick?


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Oops my bad lol

 

[4speedfunk]

65k is probably time for clutch/throw out/pilot bearing. Does the noise change if you clutch & coast?


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[ProphetPVD]

Thanks guys, and 4Speed, the thought of the throwout bearing did cross my mind, but the noise only occurs in 5th. If it was that bearing it would occur in every gear correct?

 

[cbetts]

My fifth gear has always been the noisiest of all the forward gears. It became more noticable when I put in a solid shifter. Changing the oil at 105k quieted things down though.

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[ProphetPVD]

Does the noise change if you clutch & coast?...

Sorry... forgot to answer this portion of your question. Yes, as soon as the clutch is disengaged the noise disappears. Not sure about coming off power and coasting in gear... will try that in the morning and get back to you.

 

[ProphetPVD]

My fifth gear has always been the noisiest of all the forward gears. It became more noticable when I put in a solid shifter. Changing the oil at 105k quieted things down though...

This just started last week... Zero issues for the 2+ years I had it prior to putting the Wrangler Duratrac's on, which have a much more aggressive tread pattern than the Dueler A/T's that were on there. The noise started about a week after that... maybe 600 miles from when I had them put on. Am having a hard time believing that this is just a coincidence, but as the tire size itself is identical to what was on there (285/75R16's) I can't see how these could have caused any issues. In any case, I called the local GMC dealer and am going to have them replace the fluid in the tranny and the transfer case tomorrow AM. Will let you guys know what, if anything happens.

 

[ProphetPVD]

Thanks for all the input guys, it was greatly appreciated. Took it to the shop on Thursday last week and it would appear that the 5th gear synchro is in the process of failing and after looking at the cost of a rebuild vs new I've decided to have a new tranny installed. A bitter pill to be sure...