Automatic Transmission/Transaxle: Technical Service Bulletins

• Customer Interest
  • A/T - No Movement in Drive or 3rd Gear
  • Engine, A/T - Shift/Driveability Concerns/MIL ON
  • A/T - New Transaxle I.D. Codes On Overhaul Packages
  • A/T - Intermittent Loss of Drive
  • A/T - Drive Link Noise in PARK/NEUTRAL Diagnosis
  • A/T - Production Changes THM 440-T4/HYDRA-MATIC 4T60
  • A/T - Harsh 3-2 Downshifts, Diagnosis & Repair
    • Overview
    • Very Harsh Part Throttle 3-2 Shift At 20-40 MPH:
    • Harsh 3-2 and/or 4-2 Shifts:
    • Intermittent Harsh Part Throttle 3-2 Shift:
    • Harsh 3-2 Shift **High Altitude Only**
    • Harsh 3-2 Shift **Low Altitude* Only**:
    • Harsh 3-2 Shift Maneuver At 17-20 MPH:
    • Harsh 3-2 Coastdown Bump 3.8L or 4.5L At 15-22 MPH:
    • Harsh Upshifts - High Altitude Only:
  • A/T - Intermittent Delayed Upshifts
  • A/C - Pipe Leak From A/T Shift Cable Contact
  • A/T - 2-3 Slip or Flare/Delayed 2-3 Upshifts
  • A/T - Distressed 4TH Clutch Package and Service
    • Overview
    • Service Procedure:
    • Service Parts Information:
  • A/T - Double Bump, Harsh Engagement, Shudder P to N or R
  • A/T - Slips in Reverse/No Reverse
  • A/T - Intermittent Rattle/Clicking, Lo-Rev Clutch
  • A/T - Intermittent TCC, DTC 62/26 (Gear Switches) Set
  • A/T - Delayed `R' to `D' In Cold Operating Conditions
  • A/T - Fluid Leak Near Governor Area Caused By Porosity
  • A/T - Harsh Engage, Bump, or Shudder, Shifting to REV
  • A/T - No Second Gear, Inspect/Install Servo Cover & Seal
  • A/T - 4T60 No Reverse/Slipping or Band Distress
  • A/T - No 3RD Gear, New Thrust Bearing
• All Technical Service Bulletins
  • Vehicle - Engine And Sub Systems Flushing Info. (CANADA)
  • Vehicle - Engine And Sub-Systems Flushing Recommendations
  • A/T - Fluid Oil Cooler Flow Test
  • A/T - 2-3 Upshift or 3-2 Downshift Clunk Noise
  • A/T - Slight Vehicle Movement In Park At Start Up
  • A/T - DEXRON(R)-VI Fluid Information
  • A/T - Water Or Coolant Contamination Information
  • A/T - No Movement in Drive or 3rd Gear
  • A/T - Grinding/Growling Noise in Park on Incline
  • Engine, A/T - Shift/Driveability Concerns/MIL ON
  • A/T - Choosing the Right ATF
  • A/T - Math Part II
  • A/T - Twenty Steps To Successful Repairs
  • A/T - Math Formulas Part I
    • Overview
    • Shift Speed and Pressure
    • Speedometer Ratios
  • A/T - Front Bushing Wear
  • A/T - Slipping or No-Shift/Metal Sealing Rings
  • A/T - Drive Axle and Wheel Lug Nut Torque Specifications
  • A/T - How To Use A Pressure Gauge
  • A/T - Engine Vacuum Testing
  • A/T - Core Return Product Feedback Form
  • A/T - Service Replacement Model Update
  • A/T - New Transaxle I.D. Codes On Overhaul Packages
  • A/T - Intermittent Loss of Drive
  • A/T - Drive Link Noise in PARK/NEUTRAL Diagnosis
  • A/T - New Product Information 440-T4 Hydra-Matic
    • Overview
    • Subject:New Reverse Servo Apply Pin Selection Chart
    • Subject:10 Plate 3RD Clutch Pack
    • Subject:One Piece Channel Plate Gasket
    • Subject:New Backing Plate and Snap Ring For 2ND Clutch Pack
    • Subject:New Shift Speed and Oil Pressure Charts
  • A/T - Production Changes THM 440-T4/HYDRA-MATIC 4T60
  • A/T - Hydra-Matic Designation System
  • A/T - Production Changes 125/125C, Manual Updates
  • A/T - New Bottom Pan and Controlled Compression Gasket
  • A/T - Transaxle Oil Filter Differences
  • A/T - Harsh 3-2 Downshifts, Diagnosis & Repair
    • Overview
    • Very Harsh Part Throttle 3-2 Shift At 20-40 MPH:
    • Harsh 3-2 and/or 4-2 Shifts:
    • Intermittent Harsh Part Throttle 3-2 Shift:
    • Harsh 3-2 Shift **High Altitude Only**
    • Harsh 3-2 Shift **Low Altitude* Only**:
    • Harsh 3-2 Shift Maneuver At 17-20 MPH:
    • Harsh 3-2 Coastdown Bump 3.8L or 4.5L At 15-22 MPH:
    • Harsh Upshifts - High Altitude Only:
  • A/T - New Oil Pump Rotor Thickness
  • A/T - Intermittent Delayed Upshifts
  • A/C - Pipe Leak From A/T Shift Cable Contact
  • A/T - 2-3 Slip or Flare/Delayed 2-3 Upshifts
  • A/T - Inoperative Lo-Reverse Clutch Diagnosis
  • A/T - Distressed 4TH Clutch Package and Service
    • Overview
    • Service Procedure:
    • Service Parts Information:
  • A/T - Double Bump, Harsh Engagement, Shudder P to N or R
  • A/T - Slips in Reverse/No Reverse
  • A/T - Intermittent Slip In Forward/Reverse When Cold
  • A/T - Intermittent Rattle/Clicking, Lo-Rev Clutch
  • A/T - Revised 4TH Clutch Reaction Plates
  • A/T - Revised Forward Clutch Piston Seals
  • A/T - New Input and 3RD Clutch Inner Piston Seal
  • A/T - Overhaul Kits May Require Update Kits
  • A/T - Direct & Forward Clutch Fiber Plates
  • A/T - Revised Direct Clutch Piston Center Seal R&R
  • A/T - DEXRON III Fluid Introduction
  • A/T - Intermittent TCC, DTC 62/26 (Gear Switches) Set
  • A/T - Intermittent or No Torque Converter Clutch Apply
  • A/T - New Chain Scavenging Scoop and Sprocket Support
  • A/T - Delayed `R' to `D' In Cold Operating Conditions
  • A/T - Fluid Leak Near Governor Area Caused By Porosity
  • A/T - New Governor Screen Added to Case
  • A/T - New 1-2 and Reverse Bands
  • A/T - New Reverse Band Apply Pin Gage
  • A/T - Harsh Engage, Bump, or Shudder, Shifting to REV
  • A/T - Revised Style 1-2 Band Assembly
  • A/T - No Second Gear, Inspect/Install Servo Cover & Seal
  • A/T - 4T60 No Reverse/Slipping or Band Distress
  • A/T - 3T40 New Side Cover and Bottom Pan Gasket
  • A/T - New Spring Dowel Case Cover Pins
  • A/T - Revised End Play Specification
  • A/T - No 3RD Gear, New Thrust Bearing
  • A/T - Updated R&R Pinion Gear Washers & Sun Gear