Transmission and Drivetrain: Technical Service Bulletins
- Customer Interest
- A/T - Valve Body Cover or Oil Pan Leaks
- A/T - Sipping in All Ranges Under Hard Acceleration
- A/T - Whining Noise and Slow Engagement
- A/T - Torque Converter Clutch Shudder
- Ignition Switch/Shift Lever - Inoperable
- A/T - Slips In 1st or No 1st Gear
- A/T - Rough Neutral to Drive Gear Engagement
- A/T - Harsh Park/Neutral to Drive Gear Engagement
- A/T - Harsh Park/Neutral to Drive Engagement
- M/T - High Shift Effort/Gear noise
- A/T - 4L60 Binding or Inoperative In Reverse
- A/T - Second Gear Starts
- A/T - Fluid Leaks, New Oil Pan/Valve Body Cover Gaskets
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- A/T - No Movement in Drive or 3rd Gear
- By Symptom
- Abnormal wear/deterioration
- Customer Interest
- A/T - Valve Body Cover or Oil Pan Leaks
- A/T - Sipping in All Ranges Under Hard Acceleration
- A/T - Whining Noise and Slow Engagement
- A/T - Torque Converter Clutch Shudder
- Ignition Switch/Shift Lever - Inoperable
- A/T - Slips In 1st or No 1st Gear
- A/T - Rough Neutral to Drive Gear Engagement
- A/T - Harsh Park/Neutral to Drive Gear Engagement
- A/T - Harsh Park/Neutral to Drive Engagement
- M/T - High Shift Effort/Gear noise
- A/T - 4L60 Binding or Inoperative In Reverse
- A/T - Second Gear Starts
- A/T - Fluid Leaks, New Oil Pan/Valve Body Cover Gaskets
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- A/T - No Movement in Drive or 3rd Gear
- Driveability
- Erratic Shifting
- A/T - Converter Clutch Shudder
- A/T - THM 125 No Second/Third Gear After Overhaul
- A/T - 125/200/200 4R/325 4L Late or No Upshift
- A/T - 125, 200C/200 4R, 700 R4 Hidden Residue Build Up
- A/T - 125/126C No Second Gear Or Slipping After Rebuild
- A/T - 125C Shifts 1-3 (Skips 2nd)
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Hard Shifting
- A/T - Rough Neutral to Drive Gear Engagement
- A/T - Harsh Park/Neutral to Drive Gear Engagement
- A/T - Harsh Park/Neutral to Drive Engagement
- A/T - Harsh Forward Engagement
- A/T - 125C Improvement of TCC Apply When Cold
- A/T - 125, 200C/200 4R, 700 R4 Hidden Residue Build Up
- A/T - 125/125C No Movement Any Direction
- Hard shifting/Stiff clutch
- Incorrect gear selection
- Inoperative
- Leaks
- No shift/Incorrect gear engagement
- A/T - THM Late or No Upshifts
- A/T - 125/125C No Upshift - Governor Pipe Dislodged
- A/T - 125/126C No Second Gear Or Slipping After Rebuild
- A/T - 125/125C No Second Gear After Rebuild
- A/T - 125C, 440T4 No Upshift
- A/T - 125/125C Delayed Reverse Or Slips In Reverse
- A/T - Slipping or No-Shift/Metal Sealing Rings
- A/T - No Upshift/Governor Contamination
- A/T - 4L60 Binding or Inoperative In Reverse
- A/T - Second Gear Starts
- Noise
- Slipping
- Sticking/Binding
- Vibration
- Won't disengage
- 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
- ACDelco(R) Remanufactured Transmissions - Program Update
- A/T & M/T - AC Delco Remanufactured Transmissions
- Engine/Transmission - Oil Cooler Diagnosis
- A/T - Valve Body Cover or Oil Pan Leaks
- A/T - Sipping in All Ranges Under Hard Acceleration
- A/T - Whining Noise and Slow Engagement
- A/T - Oil Cooler and Cooler Line Flushing
- A/T - Converter Bolt Torque Specifications
- M/T - Clutch Pedal Free-Play Checking
- A/T - Torque Converter Clutch Shudder
- Drive Axle - Boot Protectors
- Ignition Switch/Shift Lever - Inoperable
- A/T - 3T40/125C New Roller Clutch
- A/T - Slips In 1st or No 1st Gear
- A/T - Rough Neutral to Drive Gear Engagement
- A/T - Harsh Park/Neutral to Drive Gear Engagement
- A/T - Harsh Park/Neutral to Drive Engagement
- A/T - Final Drive Ratio
- A/T - Summary Listing of Available Bulletins
- A/T - 3T40/3T40-A Replacement Transmission Update
- A/T - Revised Drive Link Wear Specification
- A/T - Service Replacement Assembly
- A/T - Unit Exchange Program
- A/T - Core Return Product Feedback Form
- A/T - 125/125C/440-T4 Identifying Final Drive Ratios
- A/T - 125C Model Indentification
- A/T - THM Control Valve Assembly Cleaning/Servicing
- A/T - 125/125C Improved Transmission Gaskets
- A/T - Converter Clutch Solenoid Fluid Source I.D.
- A/T - THM 125C Manual Valve Change/Improved Shift Feel
- A/T - THM 125C Sticking TCC Solenoids
- A/T - 3T40/THM 125C Intermittent or No TCC Apply
- A/T - 125/125C Slipping in All Ranges
- A/T - 3T40/THM 125C Forward Drum Design Changes
- A/T - Torque Converter Identification
- A/T - Engine Vacuum Testing
- 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 - 125C Uncontrolled Lock-Up, Kills Engine At Stop
- A/T - How To Use A Pressure Gauge
- A/T - AXOD/E 44T4's and 125's Chain Stretch
- A/T - 125/440 T4 Sprocket and Final Drive Identification
- A/T - THM Late or No Upshifts
- A/T - Drive Axle and Wheel Lug Nut Torque Specifications
- A/T - Harsh Forward Engagement
- A/T - No Converter Clutch Apply When Unit Is Hot
- A/T - 125C Auxiliary Valve Bodies/Covers and Gaskets
- A/T - 125C Improvement of TCC Apply When Cold
- A/T - 125C Anti-Vibration Strut Use
- A/T - Recurrent Sticking Valves/In Line Filters
- A/T - 125/125C Engine Stalls After Replacing Converter
- A/T - Noisy Converter Or Pump
- A/T - 125C Oil Feed Modification
- A/T - Rapid Converter Pump Bushing Wear
- A/T - Converter Clutch Shudder
- A/T - 125/125C Forward Drum Cautions
- A/T - THM 125 No Second/Third Gear After Overhaul
- A/T - 125/200/200 4R/325 4L Late or No Upshift
- A/T - 125, 200C/200 4R, 700 R4 Hidden Residue Build Up
- A/T - 125C TCC Will Not Release After Warm-Up
- A/T - Pressure Tap Locations
- A/T - 125/125C No Upshift - Governor Pipe Dislodged
- A/T - 125/126C No Second Gear Or Slipping After Rebuild
- A/T - 125/125C ATF Leaking Past Front Seal
- A/T - 125/125 C Intermediate Band Adjustment
- A/T - 125/125C Car Creeps Forward After Overhaul
- A/T - 125C Shifts 1-3 (Skips 2nd)
- A/T - 125C Engine Dies In Gear
- A/T - 125/125C No Second Gear After Rebuild
- A/T - Governor Pressure Switches
- A/T - 125/125C No Movement Any Direction
- A/T - 125/125C Input Drum Contacting Center Support
- A/T - 125C, 440T4 No Upshift
- A/T - 125/125C Repeated Pump Rotor Spline Failure
- A/T - Methods to Check for Restricted Exhaust
- A/T - 125/125C Delayed Reverse Or Slips In Reverse
- A/T - Slipping or No-Shift/Metal Sealing Rings
- A/T - Front Bushing Wear
- A/T - 125/125C TCC Engagement in Drive, First & Reverse
- A/T - No Upshift/Governor Contamination
- A/T - THM Steel Clutch Piston Inspection
- A/T - Sprag Rotation
- A/T - THM 125C Model Code Information
- A/T - 125C Case Differences
- A/T - Checking Pressure Switches For Leaks
- A/T - Math Formulas Part I
- A/T - Twenty Steps To Successful Repairs
- A/T - Math Part II
- A/T - Choosing the Right ATF
- M/T - High Shift Effort/Gear noise
- A/T - New Transaxle Fluid
- A/T - Procedure If ATF is Antifreeze Contaminated
- A/T - DEXRON III Fluid Introduction
- Drive Axle Nut - Appropriate Socket Sizes
- A/T - 4L60 Binding or Inoperative In Reverse
- A/T - New Control Valve Assembly Identification
- A/T - Evaluating Peened Spacer Plates
- A/T - Second Gear Starts
- A/T - Fluid Leaks, New Oil Pan/Valve Body Cover Gaskets
- A/T - 4T60/3T40 Grinding/Growling On Incline
- Drivetrain - New Seal Protector for Drive Axle R&R
- A/T - New Thrust Washer Assembly
- Four-Speed M/T - Lubricant
- M/T - Hydraulic Clutch Bleeding Procedure Improvement
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- A/T - 4L60, Revised Sprag/Forward Clutch Hub
- A/T - No Movement in Drive or 3rd Gear
- A/T - Grinding/Growling Noise in Park on Incline
- A/T - Water Or Coolant Contamination Information
- A/T - DEXRON(R)-VI Fluid Information