Powertrain Management: Technical Service Bulletins

• Customer Interest
  • Electrical - MIL ON/DTC's Set By Various Control Modules
  • Electrical - Intermittent MIL/DTC P2138/Reduced Power
  • Fuel - Inter No Start/Power, Long Crank Time, Hesitation
  • A/T - 4T60 No Third Gear/No Drive or Reverse Conditions
  • Engine - Intermittent Driveability
  • Fuel Tank Area - Creak/Groan/Crunch/Squeak Noises
  • Interior - Fuel Odors
  • EVAP - Sight Fuel Odor
    • Overview
    • 1987-1988 Allantes Procedures
    • 1989-1990 Allantes Procedures
  • Engine - Miss, Hesitation, or Roughness
  • Oil Pressure Gauge - Erratic/Fluctuating Operation
  • Intermittent Codes E047, B333, B334, B335, B336/B337
    • Overview
    • Diagnosis:
    • Condition Present:
    • Condition Not Present:
  • Ignition - Miss, Stumble, Hesitation, Code 53, E53, E053
  • Fuels - Effect of Volatility On Driveability Conditions
  • Engine, A/T - Shift/Driveability Concerns/MIL ON
• By Symptom
  • Abnormal wear/deterioration
    • Electrical - MIL ON/DTC's Set By Various Control Modules
    • Electrical - Intermittent MIL/DTC P2138/Reduced Power
    • ECM - Tap Test Precautions
  • Customer Interest
    • Electrical - MIL ON/DTC's Set By Various Control Modules
    • Electrical - Intermittent MIL/DTC P2138/Reduced Power
    • Fuel - Inter No Start/Power, Long Crank Time, Hesitation
    • A/T - 4T60 No Third Gear/No Drive or Reverse Conditions
    • Engine - Intermittent Driveability
    • Fuel Tank Area - Creak/Groan/Crunch/Squeak Noises
    • Interior - Fuel Odors
    • EVAP - Sight Fuel Odor
      • Overview
      • 1987-1988 Allantes Procedures
      • 1989-1990 Allantes Procedures
    • Engine - Miss, Hesitation, or Roughness
    • Oil Pressure Gauge - Erratic/Fluctuating Operation
    • Intermittent Codes E047, B333, B334, B335, B336/B337
      • Overview
      • Diagnosis:
      • Condition Present:
      • Condition Not Present:
    • Ignition - Miss, Stumble, Hesitation, Code 53, E53, E053
    • Fuels - Effect of Volatility On Driveability Conditions
    • Engine, A/T - Shift/Driveability Concerns/MIL ON
  • Driveability
    • Fuel - Inter No Start/Power, Long Crank Time, Hesitation
    • Engine - Intermittent Driveability
    • Engine - Miss, Hesitation, or Roughness
    • Ignition - Miss, Stumble, Hesitation, Code 53, E53, E053
    • Fuels - Effect of Volatility On Driveability Conditions
    • Engine, A/T - Shift/Driveability Concerns/MIL ON
    • Fuel System - TOP TIER Detergent Gasoline
  • Erratic Operation
    • Instruments - IP/DIC Displays Flicker, Turn OFF/DTC E047
    • Engine - Miss, Hesitation, or Roughness
    • Oil Pressure Gauge - Erratic/Fluctuating Operation
    • Intermittent Codes E047, B333, B334, B335, B336/B337
      • Overview
      • Diagnosis:
      • Condition Present:
      • Condition Not Present:
  • Erratic Shifting
    • A/T - 4T60 No Third Gear/No Drive or Reverse Conditions
    • Engine, A/T - Shift/Driveability Concerns/MIL ON
  • False instrument warning light/gauges
    • Instruments - IP/DIC Displays Flicker, Turn OFF/DTC E047
    • Oil Pressure Gauge - Erratic/Fluctuating Operation
    • Intermittent Codes E047, B333, B334, B335, B336/B337
      • Overview
      • Diagnosis:
      • Condition Present:
      • Condition Not Present:
  • High emissions
    • I/M 240 Repairs - Obtaining Technical Assistance
  • No shift/Incorrect gear engagement
    • A/T - 4T60 No Third Gear/No Drive or Reverse Conditions
  • Noise
    • Fuel Tank Area - Creak/Groan/Crunch/Squeak Noises
  • Odors
    • Interior - Fuel Odors
    • EVAP - Sight Fuel Odor
      • Overview
      • 1987-1988 Allantes Procedures
      • 1989-1990 Allantes Procedures
  • Poor performance
    • Fuels - Effect of Volatility On Driveability Conditions
    • Fuel System - TOP TIER Detergent Gasoline
  • Starting problems
    • Fuel - Inter No Start/Power, Long Crank Time, Hesitation
    • Fuels - Effect of Volatility On Driveability Conditions
    • Fuel System - TOP TIER Detergent Gasoline
• All Technical Service Bulletins
  • Vehicle - Engine And Sub Systems Flushing Info. (CANADA)
  • Vehicle - Engine And Sub-Systems Flushing Recommendations
  • Engine - THIS BULLETIN HAS BEEN CANCELED
  • Fuel System - Fuel Injector Maintenance Cleaning
  • Fuel System - GM Fuel System Treatment PLUS(R) Info.
  • Electrical - MIL ON/DTC's Set By Various Control Modules
  • Electrical - Intermittent MIL/DTC P2138/Reduced Power
  • ECM/PCM - Driveability Symptom/Data Worksheet
  • Electrical - Wire Probing Device
  • I/M 240 Repairs - Obtaining Technical Assistance
  • Engine Controls - Relearning TPS & Idle Throttle Angle
  • Fuel - Inter No Start/Power, Long Crank Time, Hesitation
  • Instruments - IP/DIC Displays Flicker, Turn OFF/DTC E047
  • A/T - 4T60 No Third Gear/No Drive or Reverse Conditions
  • Tools - Introduction Of The Fuel Injector Tester
  • ECM - Tap Test Precautions
  • Engine - Intermittent Driveability
  • ECM/PCM - Potential MEM-CAL Damage
  • Oxygen Sensors - Silica Contamination
  • BCM - Ordering Replacement EEPROMs For BCM
  • ECM/BCM 32-Way Connector - Labeling Clarification
  • BCM EPROM - Calibration Summary
  • Information On PROM Calibrations
  • PROM - Calibrations Listings
    • Overview
    • 1980 Thru 84 6.0L V-8
    • 1981 - 84 6.0L V-8-6-4
    • 1981 4.1L V-6
    • 1982 4.1L V-8
    • 1982 4.1L V-6
    • 1982 1.8L L-4
    • 1983 4.1L V-8
    • 1983 2.0L L-4
    • 1984 4.1L V-8
    • 1984 2.0L L-4
    • 1985 4.1L V-8
    • 1985 2.0L L-4
    • 1986 4.1L V-8
    • 1986 5.0L V-8
    • 1986 2.0L L-4
    • 1987 4.1L V-8
    • 1987 5.0L V-8
    • 1987 4.1L V-8
    • 1987 2.8L V-6
    • 1988 4.5L, 4.1L V-8
    • 1988 5.0L V-8
    • 1988 2.8L V-6
    • 1989 4.5L, 5.0L V-8
  • Fuel - Feed/Return Pipe Repairs
  • Fuel Tank Area - Creak/Groan/Crunch/Squeak Noises
  • Interior - Fuel Odors
  • EVAP - Sight Fuel Odor
    • Overview
    • 1987-1988 Allantes Procedures
    • 1989-1990 Allantes Procedures
  • Engine - Miss, Hesitation, or Roughness
  • Oil Pressure Gauge - Erratic/Fluctuating Operation
  • Emissions - Testing Information
  • Enhanced IM240 Program - Implementation Plan
  • Emission - Enhanced Inspection Maintenance Programs
  • I/M 240 Program - Equipment Purchase
  • I/M Emissions Diagnostic Manual -Program
  • Enhanced Emission I/M - Program Update
  • Enhanced Emission Inspection Maintenance - Equipment
  • Warranty - Guidelines for I/M 240 Labor
  • Emissions Inspection/Maintenance - Labor Operations
  • EVAP System - Service of Connectors
  • Intermittent Codes E047, B333, B334, B335, B336/B337
    • Overview
    • Diagnosis:
    • Condition Present:
    • Condition Not Present:
  • Ignition - Miss, Stumble, Hesitation, Code 53, E53, E053
  • Oxygen Sensor Test - Revised Tech 1 Mass Storage CD
  • PROM/MEMCAL - Identification Marks
  • Fuels - Effect of Volatility On Driveability Conditions
  • Fuel - How Fuel Economy Is Determined
  • Fuel - Use of 15 Percent MTBE
  • Fuel - Reformulated/Oxygenated Gasolines
  • Engine, A/T - Shift/Driveability Concerns/MIL ON
  • Fuel System - E85 Fuel Usage Precaution
  • Engine/Fuel System - Oil/Fuel Additive Information
  • Fuel System - TOP TIER Detergent Gasoline (Canada)
  • Fuel System - TOP TIER Detergent Gasoline