Transmission and Drivetrain: Technical Service Bulletins
- Customer Interest
- 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 - Click or Whine Noise in 3RD, 4TH Gear
- A/T - Delayed or No Engagement In Drive/Reverse
- A/T - No Reverse/Delayed Reverse Cold
- A/T - Buzzing Noise On Engine Shutdown
- A/T - 4L60 Inoperative or Binding In Reverse
- A/T - No Upshift or Stuck in First Gear
- A/T - Fluid Leak at Helix Converter Seal
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- A/T - No Movement in Drive or 3rd Gear
- A/T - Harsh 3-2 Downshifts, Diagnosis & Repair
- By Symptom
- Abnormal wear/deterioration
- Customer Interest
- 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 - Click or Whine Noise in 3RD, 4TH Gear
- A/T - Delayed or No Engagement In Drive/Reverse
- A/T - No Reverse/Delayed Reverse Cold
- A/T - Buzzing Noise On Engine Shutdown
- A/T - 4L60 Inoperative or Binding In Reverse
- A/T - No Upshift or Stuck in First Gear
- A/T - Fluid Leak at Helix Converter Seal
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- A/T - No Movement in Drive or 3rd Gear
- A/T - Harsh 3-2 Downshifts, Diagnosis & Repair
- Driveability
- Erratic Shifting
- Hard Shifting
- 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 - Harsh Reverse Engagements
- A/T - 700R4 No 4th, Late 4th, Falls Out Of 4th
- A/T - 125, 200C/200 4R, 700 R4 Hidden Residue Build Up
- A/T - Harsh 3-2 Downshifts, Diagnosis & Repair
- Incorrect gear selection
- Inoperative
- Leaks
- No shift/Incorrect gear engagement
- A/T - 700R4 No 4th, Late 4th, Falls Out Of 4th
- A/T - 200/200C/200R4, 325/3254L, 700-R4 No 2nd Gear
- A/T - THM Late or No Upshifts
- A/T - 700R4 No 2nd, No 4th and No TCC
- A/T - Delayed Forward Engagement/Burnt 3-4 Clutches
- A/T - 700R4 Low And Reverse Clutch Failure
- A/T - Slipping or No-Shift/Metal Sealing Rings
- A/T - No Upshift or Stuck in First Gear
- Noise
- Slipping
- Sticking/Binding
- All Technical Service Bulletins
- Drivetrain - Information on Driveline Clunk Noise
- Vehicle - Engine And Sub Systems Flushing Info. (CANADA)
- Vehicle - Engine And Sub-Systems Flushing Recommendations
- M/T - Operating Characteristics Information
- 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
- TSB Updates - 86-T-77, 91-T-128, 91-T-53, 91-T-53
- A/T - New Bottom Pan and Controlled Compression Gasket
- Differential Pinion Shaft Locking Screw - Service
- 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 - Info On New Pump Removal Tool
- A/T - 2004R/700R4 Oil Pump & Slide Service
- A/T - Oil Cooler Flushing Frequently Asked Questions
- A/T - 3-4 Clutch/2-4 Band Service Information
- A/T - Click or Whine Noise in 3RD, 4TH Gear
- A/T - Delayed or No Engagement In Drive/Reverse
- A/T - No Reverse/Delayed Reverse Cold
- A/T - Revised 3-4 Clutch and Fiber Plate Usage
- A/T - Buzzing Noise On Engine Shutdown
- Output Shafts/Input Housing to Output Shaft Seal - New
- A/T - New Solenoid Testing Kit
- A/T - Core Return Product Feedback Form
- A/T - 700R4 New Auxiliary Accumulator Valve Body
- A/T - Torque Converter Identification
- A/T - Harsh Reverse Engagements
- A/T - Engine Vacuum Testing
- A/T - 700R4 No 4th, Late 4th, Falls Out Of 4th
- A/T - Diagnosing Converter Lock-Up Problems
- Overview
- Test # 1 - Checking For 12 Volts at Terminal -A-
- Test # 2 - Checking For 12 Volts Across Fuse
- Test # 3 - Checking For 12 Volts Across Brake Switch
- Test # 4 - Adjusting/Replacing the Brake Switch
- Test # 5 - Checking Wires For Shorts and Opens
- Test # 6 - Checking For Ground at Terminal -D-
- Test # 7 - Grounding the -D- Wire
- Test # 8 - Checking Cooler Line Pressure or Surge
- Test # 9 - Checking the Solenoid
- Test # 10 - Checking Electrical Switches on Trans.
- Test # 11 - Checking Lockup Apply Valve
- Test # 12 - Checking Signal Oil Circuit
- Test # 13 - Checking the Computer
- A/T - Valve Body Assembly 700-R4 Inspection
- A/T - How To Use A Pressure Gauge
- A/T - 700R4 Valve Body Interchange
- A/T - 700R4 Bind In Reverse After Rebuild
- A/T - 200/200C/200R4, 325/3254L, 700-R4 No 2nd Gear
- A/T - THM Late or No Upshifts
- A/T - 700R4 Shifts In Manual Low
- A/T - 700R4, 2004R No Line Pressure Rise
- A/T - 700R4 Forward Sprag Design
- A/T - 4L60/700R4 Rear Planet Failure/Lack Of Lube
- A/T - 700R4 Missing Reverse Checkball
- A/T - 700R4 Rear Planet Failure/Lack of Lube
- A/T - 700R4 No 2nd, No 4th and No TCC
- A/T - Drive Axle and Wheel Lug Nut Torque Specifications
- A/T - Delayed Forward Engagement/Burnt 3-4 Clutches
- A/T - No Converter Clutch Apply When Unit Is Hot
- A/T - Rapid Converter Pump Bushing Wear
- A/T - Converter Clutch Shudder
- A/T - 125, 200C/200 4R, 700 R4 Hidden Residue Build Up
- A/T - 700R4 Low And Reverse Clutch Failure
- A/T - Slipping or No-Shift/Metal Sealing Rings
- A/T - Front Bushing Wear
- A/T - Math Formulas Part I
- A/T - Twenty Steps To Successful Repairs
- A/T - 4L60/THM 700R4 200R4 Fluid Filter Seal
- A/T - Math Part II
- A/T - Choosing the Right ATF
- A/T - DEXRON III Fluid Introduction
- A/T - 4L60 Inoperative or Binding In Reverse
- A/T - 700R4 Valve Body Modification
- A/T - No Upshift or Stuck in First Gear
- Drivetrain - Recommended Axle Lubricant
- A/T - Cracked Case Diagnosis
- A/T - Revised End Play Specification
- A/T - Fluid Leak at Helix Converter Seal
- M/T - Hydraulic Clutch Bleeding Procedure Improvement
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- A/T - No Movement in Drive or 3rd Gear
- A/T - Water Or Coolant Contamination Information
- A/T - DEXRON(R)-VI Fluid Information