Section 57 (Automatic Transmission - 8L90 (M5U) - Diagnostic Information And Procedures)
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- Diagnostic Information and Procedures
- DTC P0601-P0604, P0606, P0607, P060A, P062F, P16F3, P16F4, or P16FB
- DTC P0658, P0659, P2718, P2720, P2721, P2727, P2729, P2730, P281B, P281D, or P281E
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC P0711-P0713
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC P0716, P0717, P07BF, or P07C0
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P071A
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC P0722, P0723, P077C, or P077D
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P0746 or P0747
- DTC P0776 or P0777
- DTC P0796 or P0797
- DTC P0815, P0816, or P0826
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC P0851
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC P0960, P0962-P0964, P0966-P0968, P0970, P0971, P2670, P2671, P2736, P2738, P2739, P2812, P2814, P2815, P2824, P2826, or P2827
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC P175F
- DTC P1761
- DTC P1762
- DTC P176B-P176D
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P1824, P182D, P18B8, P18BD, or P18C2
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P182A, P1838, P18B5, P18BA, or P18BF
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P182B, P182C, P18B6, P18BB, or P18C0
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P182E or P1915
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC P182F, P1839, P18B7, P18BC, or P18C1
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P1840, P1841, P18B9, P18BE, or P18C3
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Typical Scan Tool Data
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P2714 or P2715
- DTC P2723 or P2724
- DTC P27A7-P27AD
- DTC P2808 or P2809
- DTC P2817 or P2818
- Solenoid Valve Characterization Reprogramming
- Symptoms - Automatic Transmission
- Tow/Haul Switch/Indicator Malfunction
- Transmission Fluid Level and Condition Check
- Transmission Fluid Fill Procedure
- Road Test
- Torque Converter Diagnosis
- Torque Converter Stator
- Poor Acceleration at Low Speed - Stator Roller Clutch Freewheels at All Times
- Poor Acceleration at High Speed - Stator Roller Clutch is Locked Up at All Times
- Torque Converter Bearing Noise
- Torque Converter Clutch
- Torque Converter Clutch Shudder
- If Shudder Occurs During TCC Apply, Release, and ECCC
- If Shudder Occurs After TCC has Locked
- Torque Converter Vibration Test
- Isolating Vibration
- Indexing Torque Converter
- Flex Plate/Torque Converter Vibration Test
- Bushing and Mating Shaft Inspection
- Vibration
- Noise and Vibration Analysis
- Whine/Growl Noise That Changes with Vehicle Speed
- Clutch Plate Diagnosis
- Engine Coolant/Water in Transmission
- Fluid Leak Diagnosis
- Case Porosity Repair
- Automatic Transmission Fluid Leaks
- Shift Indicator Indicates Wrong Gear Selection
- No Park or Drive
- Harsh Garage Shift
- No Drive in All Ranges
- Harsh, Soft, Delayed or Slipping First, Third, Fifth, Sixth or Seventh Shift
- No First, Third, Fifth, Sixth or Seventh Gear
- Harsh, Soft, Delayed or Slipping Second, Third, Fourth, Sixth or Eighth Shift
- No Second, Third, Fourth, Sixth or Eighth Gear
- Harsh, Soft, Delayed or Slipping Fourth, Fifth, Sixth, Seventh, Eighth, or Reverse Shift
- No Fourth, Fifth, Sixth, Seventh, Eighth or Reverse Gear
- Harsh, Soft, Delayed or Slipping First, Second, Seventh, Eighth, or Reverse Shift
- No First, Second, Seventh, Eighth or Reverse Gear
- Harsh, Soft, Delayed or Slipping First, Second, Third, Fourth, Fifth, or Reverse Shift
- No First, Second, Third, Fourth, Fifth or Reverse Gear
- No Torque Converter Clutch Apply
- No Torque Converter Clutch Release