- AAA DISCOUNT REWARDS MEMBER CARD # ……………………………
- INSPECT AND ADVISE: I test drove the vehicle approx 9 miles and confirmed the customer's concern, that there is a shutter symptom when accelerating between 50-70 mph. There are no stored trouble codes in any of the modules at this time. GM has issued a TSB (technical service bulletin) for the customer described symptom. TSB # 19-NA-018 Shake and/or shuddering during light throttle acceleration between 40 and 80 mph. The TSB states to perform an ATF triple drain and fill procedure. GM also states that it could take 200 miles for TCC shudder to be eliminated. At this time we suggest to perform an ATF fluid exchange procedure and for the customer to monitor the condition. If the shudder symptom does not improve, replacement of the A/T assembly will be required.
- I performed a transmission fluid pan removal, cleaned the pan and magnets, reinstalled pan and filled with fresh fluid. This procedure was performed three times with a new fluid pan gasket installed on the 3rd and final pan installation. I test drove the vehicle approximately 15 miles with no further faults or symptoms. NOTE; GM service bulletin states it may take up to 200 miles for the shudder condition to be eliminated. Rec monitor the condition.
- Inspect the tire PSI and Inflate to Proper Specifications Front __35___PSI Rear____35_PSI
LIZ & SCOTT P. gave our service a 5 star review on 4/27/2022