HHR SS Topics and information on the 2008-2010 Chevy HHR SS Turbocharged models.

Are SS transmissions different?

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Old 02-20-2019, 12:42 PM
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Hi guys i got a SS HHR with a bad manual transmission looking for a replacement are these compatible with other HHR manual transmissions or do you have to replace them with an SS transmission? Thanks
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Old 02-20-2019, 03:19 PM
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Originally Posted by wokbelly
Hi guys i got a SS HHR with a bad manual transmission looking for a replacement are these compatible with other HHR manual transmissions or do you have to replace them with an SS transmission? Thanks
I found this:
https://en.wikipedia.org/wiki/F35_transmission
Final gear ratio is the main factor. Gearing in the the trans is all the same ratio.
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Old 02-20-2019, 03:23 PM
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Is F35 the differential?



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Old 02-20-2019, 06:08 PM
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Originally Posted by Oldblue
Is F35 the differential?



No. F35 is the trans. There's an error in the wiki.

Saab developed it. GM's FWD Manual Trans efforts were non-existent. This was a "use the Saab one or buy one" decision for the SS.
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Old 02-20-2019, 06:09 PM
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For posterity....

https://en.wikipedia.org/wiki/F35_transmission
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Old 02-20-2019, 06:18 PM
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The same link from Cat Man
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Old 02-20-2019, 06:55 PM
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Yes, they are different.
The SS uses the Saab F35 (RPO code MU3 in the glovebox )
The LS, LT's use the Getrag F23 (RPO code M86 in the glovebox )

Those 2 transmissions will not be a direct interchange. You will need to find a Saab F35 to replace it with.
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Old 02-20-2019, 09:20 PM
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So a Saab transmission is in these so i could use one from a Saab vehicle as long as the ones on the list are used and they should bolt up as long as it is an F35?
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Old 02-20-2019, 09:26 PM
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I just realized mines a 2008 so mine may be a different number and not an F35?
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Old 02-21-2019, 07:36 AM
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It shows on the list 2008 to 2010 HHR SS used the F35
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