Transmission problem C7 A8
08-13-2018, 05:24 PM
#1
Transmission problem C7 A8
I recently started having my transmission feel like it’s shuttering/pulsating during cruising speed. Went to the dealer and they updated my transmission but the problem continues. Dealer is recommending a transmission flush. Thoughts please. Should I do this or not.
08-13-2018, 06:10 PM
#2
John
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JR ZO6 (08-15-2018)
08-13-2018, 07:01 PM
#3
Race Director
Member Since: Mar 2001
Location: Bonneville Salt Flats, 223mph Aug. '04
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There are a gazillion threads here dealing with A8 and torque converter issues. Check 'em out. 
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JR ZO6 (08-15-2018)
08-14-2018, 04:05 PM
#4
Safety Car
Triple flush is the next step. It fixed the issues on my 2017 along with a TCM re-tune at the dealer. Mine never came back as others have suggested theirs has. GM will not just replace the Torque Converter without going through the listed steps.
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JR ZO6 (08-15-2018)
08-15-2018, 03:56 PM
#6
What have dealers been charging (for cars outside of warranty) for the triple flush?