Engine, Cooling and Exhaust: Technical Service Bulletins

• Customer Interest
  • ECM - Driveability Concerns/Erratic Warning Lamps
    • Overview
    • Conditon and Cause
    • Correction:
      • A.Loss of Power or Ground to the ECM
      • B.Large Voltage Variations On Vehicle Power and Ground Wires
      • C.Large Voltage Variations On ECM Connected Signal Wires
  • A/C Compressor - Loading in Defrost Mode
  • Engine - Rear Main Seal Oil Leak
  • A/T - Engine Stall When Engaging Reverse or Drive
  • Engine - Roughness or Stall At Idle
  • Engine - Miss, Hesitation, or Roughness
  • Erratic Idle Speed Fluctuations, DTC 30 (ISC Circuit)
  • Fuels - Effect of Volatility On Driveability Conditions
  • Engine, A/T - Shift/Driveability Concerns/MIL ON
• By Symptom
  • Abnormal wear/deterioration
    • Exhaust Manifold - Cracking
  • Customer Interest
    • ECM - Driveability Concerns/Erratic Warning Lamps
      • Overview
      • Conditon and Cause
      • Correction:
        • A.Loss of Power or Ground to the ECM
        • B.Large Voltage Variations On Vehicle Power and Ground Wires
        • C.Large Voltage Variations On ECM Connected Signal Wires
    • A/C Compressor - Loading in Defrost Mode
    • Engine - Rear Main Seal Oil Leak
    • A/T - Engine Stall When Engaging Reverse or Drive
    • Engine - Roughness or Stall At Idle
    • Engine - Miss, Hesitation, or Roughness
    • Erratic Idle Speed Fluctuations, DTC 30 (ISC Circuit)
    • Fuels - Effect of Volatility On Driveability Conditions
    • Engine, A/T - Shift/Driveability Concerns/MIL ON
  • Driveability
    • A/T - Engine Stall When Engaging Reverse or Drive
    • Engine - Roughness or Stall At Idle
    • Engine - Miss, Hesitation, or Roughness
    • Fuels - Effect of Volatility On Driveability Conditions
    • Engine, A/T - Shift/Driveability Concerns/MIL ON
  • Erratic Operation
    • Engine - Miss, Hesitation, or Roughness
    • Erratic Idle Speed Fluctuations, DTC 30 (ISC Circuit)
  • Erratic Shifting
    • Engine, A/T - Shift/Driveability Concerns/MIL ON
  • Leaks
    • Engine - Rear Main Seal Oil Leak
  • Poor performance
    • A/C Compressor - Loading in Defrost Mode
    • Fuels - Effect of Volatility On Driveability Conditions
  • Starting problems
    • Fuels - Effect of Volatility On Driveability Conditions
• All Technical Service Bulletins
  • Vehicle - Engine And Sub Systems Flushing Info. (CANADA)
  • Vehicle - Engine And Sub-Systems Flushing Recommendations
  • Electrical - Wire Probing Device
  • Engine/Fuel - Fuel Injector and Choke Light Service
  • ECM - Driveability Concerns/Erratic Warning Lamps
    • Overview
    • Conditon and Cause
    • Correction:
      • A.Loss of Power or Ground to the ECM
      • B.Large Voltage Variations On Vehicle Power and Ground Wires
      • C.Large Voltage Variations On ECM Connected Signal Wires
  • Engines - Remanufactured
  • Engines - ACDelco Remanufactured
    • Overview
    • Warranty Coverage
    • Warranty Claim Submission Procedures
  • Engine - Surface Conditioning Discs Precautions
  • Engine - AC Delco Remanufactured Engines
    • Overview
    • Warranty Coverage
    • New Warranty Registration
    • Warranty Claim Submission Requirements
    • Claim Submission Details
  • Engine - Effects of Top Engine Cleaner On CAT Converter
  • A/C Compressor - Loading in Defrost Mode
  • Engine - Revised Piston-to-Bore Clearances
  • Oil Pump Rotor and Slide - Updated Part Numbers
  • Cooling - Radiator Repair/Replacement Guidelines
  • Engine - Rear Main Seal Oil Leak
  • Exhaust Manifold - Cracking
  • A/T - Engine Stall When Engaging Reverse or Drive
  • Emissions - Replacement Procedure for Dual Bed Cat
  • Engine - Roughness or Stall At Idle
  • Engine - Proper 75 mm Oil Filter Installation
  • Oil Filters - Recycling Information
  • Engine - Miss, Hesitation, or Roughness
  • Erratic Idle Speed Fluctuations, DTC 30 (ISC Circuit)
  • Coolant - Information on Propylene Glycol Usage
  • Warranty - Recycled Engine Coolant Policy
  • Cooling System - Reconstituted Anti-Freeze
  • Engine Coolant - Substitute Warning
  • Cooling System - Recycling Coolant Update
  • Cooling System - Use of Recycled Coolant
  • Secondary Ignition Wire - Service Precautions
  • Fuels - Effect of Volatility On Driveability Conditions
  • Cooling System - Coolant Recycling Information
  • Engine, A/T - Shift/Driveability Concerns/MIL ON
  • Engine - Sealant Usage/Procedures
  • Engine/Fuel System - Oil/Fuel Additive Information
  • Cooling System, A/C - Aluminum Heater Cores/Radiators
  • Engine - Noise/Damage Oil Filter Application Importance
  • Engine - Drive Belt Misalignment Diagnostics
  • Engine - Use of 'Surface Conditioning Disks'
  • Engine - Intake Manifold Inspection/Replacement
  • Engine - GM Dexos 1(R) And 2(R) Oil Specifications
  • Engine - GM dexos 1(R) and dexos 2(R) Oil Specifications/Info.