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Please help, F23 trouble

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Old Feb 3, 2026 | 07:34 PM
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Please help, F23 trouble

Hello, everyone I just bought a 2006 hhr LS in orange.
It's the basic 2.2 ecotech and the F23 trans. I bought it for 1400 bucks with around a 100000 miles on it. The issue I'm having is it was grinding in third and fourth gear. I found out that the transmission fluid was very low So I filled it completely with new fluid. Now, since that's all done I drove it again and it only grinds when I let off the clutch and it still won't go into third or fourth. And fifth is non-existent. First second and reverse work good. And For context, the last owner replaced the clutch and had these issues in parked it. I am really hoping it's not a synchro issue but alas I'm here. Thanks.

Old Feb 3, 2026 | 07:36 PM
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Also I removed the cables and am buying new ones. Also I'll probably Get the whole new short shifter kit just to replace as much plastic as I can. The shifter cup is also pretty worn.
Old Feb 4, 2026 | 06:49 AM
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Those might resolve the issues, let us know after you replace them.
Did you drain out the remaining old transmission fluid? Then fill with fresh fluid?
Old Feb 4, 2026 | 01:44 PM
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I did replace with new fluid, the engine is much happier now
Old Feb 4, 2026 | 01:47 PM
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This was how much fluid. I overfilled it with dex 3 at 2.6 quarts. Hopefully this low fluid didn't ruin the syncros
Old Feb 4, 2026 | 02:23 PM
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Doesn't make much difference but, GM upgraded the recommendation to dexron VI.
Where did the fluid go?
Old Feb 4, 2026 | 02:25 PM
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I have a feeling that the first owners never added fluid. It's also from New Mexico. And I'm here in Northern California, and it's been in really hot areas, so I have a feeling the fluid evaporated maybe
Old Feb 4, 2026 | 02:26 PM
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To be honest, I might just get a new transmission from DF kit car. No one wants to work on it up here.
Old Feb 4, 2026 | 03:46 PM
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Install those shift cables you ordered and go from there.
Old Feb 4, 2026 | 03:49 PM
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That's the plan ill keep in touch 🤞



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