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1987
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Celebrity L4-151 2.5L
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Shift Modulator
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Technical Service Bulletins
Shift Modulator: Technical Service Bulletins
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Customer Interest
A/T - THM 440-T4 Slips On Takeoff or Acceleration
A/T - 440-T4 Modulator Valve Buzz Noise
A/T - Harsh Engagement During Range Selection
All Technical Service Bulletins
A/T - THM 440-T4 Slips On Takeoff or Acceleration
A/T - 440-T4 Modulator Valve Buzz Noise
A/T - Harsh Shift Conditions Service Information
Overview
IA. Very Harsh Part Throttle 3-2 Shift At 20-40 MPH
IB. Harsh 3-2 and/or 4-2 Shifts
IC. Intermittent Harsh Part Throttle 3-2 Shift
II. Harsh 3-2 Shift **High Altitude Only**
III. Harsh 3-2 Shift **Low Altitude* Only**
IV Harsh 3-2 Shift Maneuver At 17-20 MPH
V. Harsh Upshifts - High Altitude Only
A/T - Harsh Engagement During Range Selection