HHR automatic trans hard shift - Transmission Forum

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HHR automatic trans hard shift
Monday, August 10, 2009 7:34 PM
I have 2006 2.4 HHR that has started to shift very hard after highway driving
on trips. 65-70 mph for two -three hours. Stop for gas, shifts very hard.
Shut engine down 30 minutes or more, shifts fine.
I had a BG trans flush 1500 mile ago. Did it before the service and is doing it
after the service. Car has 64,000 miles on it.
Any suggestions?

Re: HHR automatic trans hard shift
Tuesday, August 11, 2009 1:39 PM
You still have a warranty on it? I assuming no since you are asking on here about it. I would make sure the tranny fluid is topped up first.

You might have better luck on this forum : http://ecotecforum.com/
Re: HHR automatic trans hard shift
Tuesday, August 11, 2009 3:49 PM
Thanks for the reply, The fluid it topped off. I had Chevy service the trans (BG), I hope the
thing is topped off.
The warrante on 2006 is 36,000 miles I believe.
The pan gasket has a slight weep, not dripping, I don't think that would effect anything.
FRANK
Re: HHR automatic trans hard shift
Thursday, August 20, 2009 1:32 PM
check your Intake Air Temp sensor. I know doesn't make sense.


PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
Re: HHR automatic trans hard shift
Monday, September 07, 2009 8:57 AM
what would the IAT have to do with it? I got this code from my car and i also get some hard shifts.....although i replaced the IAT and nothing changed.
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