2010 Chevy cobalt shudders when shifting occasionally

5

Asked by Dec 27, 2015 at 08:03 PM about the 2010 Chevrolet Cobalt LT1

Question type: Maintenance & Repair

This satrted a couple of days ago and has me
scratching my head.  My car began to give a slight
bump or shudder when shifting after I speed up
from a stop.  It also had an episode of the
tachometer jumping up and down slightly when
accelerating to highway speed.  It's my atf low?   I
changed the trans pan seal and filter 6 months
ago.

Also not sure if this is related but when sitting still
in drive and depressing both brake and gas pedals
the rev doesn't get over 2000.  Any ideas?

4 Answers

71,355

Well check the trany fluid if you have not since the filter change, the RPM thing may be the start of a plugged catalytic converter, just have it checked at an exhaust shop.

71,355

It could be a good thing your rpm is not going over 2000 while two stepping it, means the trany is not slipping in first gear.

5

That's a good point about the tranny. I can't check the fluid level as there is no dipstick

71,355

They have a plug on the side of the trany, It is full when you pull the plug and fluid runs out. Exactly where it is on that one I don't know. Just go to a service shop and have them check it. I wouldn't think they would charge you, it only takes like 5=10 minutes to do.

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