Powertrain Management: Technical Service Bulletins

• Customer Interest
  • Electrical - MIL ON/DTC's Set By Various Control Modules
  • Electrical - Intermittent MIL/DTC P2138/Reduced Power
  • Emissions - EGR Codes E48/E048/Engine Detonation/Ping
  • 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
  • Engine - Shudder and Loss of Power
  • A/T - High Idle/Intermittent Code 26, Improper TPS
  • Engine - Rough Idle/Lack of Power/Miss/Backfire
  • Engine Idle Surge, DTC 30 (Idle Speed Control) Set
  • A/T - 4T60 No Third Gear/No Drive or Reverse Conditions
  • Fuel - Hard Start After Injector R&R, Application Chart
  • Fuel - Intermittent Reduction of Power/Stall
  • Starting - Dead Battery/No Crank After Overnight Set
  • O2 Sensor - DFI Codes 13 and 45
  • Engine Controls - Surge or Chuggle at 52-60 MPH
  • Engine - 42-50 MPH Surge, Tip In Detonation, Hesitation
  • Engine - Miss, Hesitation, or Roughness
  • Engine - Power Loss, Hesitation, Shudder/Backfire
  • Ignition - Miss, Stumble, Hesitation, Code 53, E53, E053
  • Instruments - Oil Pressure Connector Repair Kit
  • 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
    • Engine - Rough Idle/Lack of Power/Miss/Backfire
    • Engine Idle Surge, DTC 30 (Idle Speed Control) Set
    • ECM - Tap Test Precautions
    • Engine - HT4100 Revised Distributor Drive Gear
  • Customer Interest
    • Electrical - MIL ON/DTC's Set By Various Control Modules
    • Electrical - Intermittent MIL/DTC P2138/Reduced Power
    • Emissions - EGR Codes E48/E048/Engine Detonation/Ping
    • 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
    • Engine - Shudder and Loss of Power
    • A/T - High Idle/Intermittent Code 26, Improper TPS
    • Engine - Rough Idle/Lack of Power/Miss/Backfire
    • Engine Idle Surge, DTC 30 (Idle Speed Control) Set
    • A/T - 4T60 No Third Gear/No Drive or Reverse Conditions
    • Fuel - Hard Start After Injector R&R, Application Chart
    • Fuel - Intermittent Reduction of Power/Stall
    • Starting - Dead Battery/No Crank After Overnight Set
    • O2 Sensor - DFI Codes 13 and 45
    • Engine Controls - Surge or Chuggle at 52-60 MPH
    • Engine - 42-50 MPH Surge, Tip In Detonation, Hesitation
    • Engine - Miss, Hesitation, or Roughness
    • Engine - Power Loss, Hesitation, Shudder/Backfire
    • Ignition - Miss, Stumble, Hesitation, Code 53, E53, E053
    • Instruments - Oil Pressure Connector Repair Kit
    • Fuels - Effect of Volatility On Driveability Conditions
    • Engine, A/T - Shift/Driveability Concerns/MIL ON
  • Driveability
    • Engine - Shudder and Loss of Power
    • Engine - Detonation (Pinging), Slight Tip-in Hesitation
    • A/T - High Idle/Intermittent Code 26, Improper TPS
    • Engine - Rough Idle/Lack of Power/Miss/Backfire
    • Engine Idle Surge, DTC 30 (Idle Speed Control) Set
    • Fuel - Intermittent Reduction of Power/Stall
    • Engine Controls - Surge or Chuggle at 52-60 MPH
    • Engine - 42-50 MPH Surge, Tip In Detonation, Hesitation
    • Engine - Miss, Hesitation, or Roughness
    • Fuel - Black Exhaust, Vacuum Break/Choke Pull-off Test
    • Ignition - Miss, Stumble, Hesitation, Code 53, E53, E053
    • Warranty - Driveability Problems From Add On Equipment
    • Fuels - Effect of Volatility On Driveability Conditions
    • Engine, A/T - Shift/Driveability Concerns/MIL ON
    • Fuel System - TOP TIER Detergent Gasoline
  • Erratic Operation
    • Fuel - Intermittent Reduction of Power/Stall
    • Engine - Miss, Hesitation, or Roughness
    • Engine - Power Loss, Hesitation, Shudder/Backfire
    • Open Circuit - Intermittent Rich Operation, DTC 15 Or 38
  • 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
    • A/T - High Idle/Intermittent Code 26, Improper TPS
  • High emissions
    • I/M 240 Repairs - Obtaining Technical Assistance
  • Leaks
    • Fuel - Black Exhaust, Vacuum Break/Choke Pull-off Test
  • Low, Dead battery
    • Starting - Dead Battery/No Crank After Overnight Set
  • No shift/Incorrect gear engagement
    • A/T - 4T60 No Third Gear/No Drive or Reverse Conditions
  • Noise
    • Engine - Detonation (Pinging), Slight Tip-in Hesitation
    • Engine - Rough Idle/Lack of Power/Miss/Backfire
  • Out of specification
    • A/T - High Idle/Intermittent Code 26, Improper TPS
  • Poor performance
    • Engine - Shudder and Loss of Power
    • Fuels - Effect of Volatility On Driveability Conditions
    • Fuel System - TOP TIER Detergent Gasoline
  • Shorted/Open circuit
    • Ignition System - Alternate On-Car HEI Module Test
  • Smoke, Fumes
    • Fuel - Black Exhaust, Vacuum Break/Choke Pull-off Test
  • Starting problems
    • Fuel - Hard Start After Injector R&R, Application Chart
    • Starting - Dead Battery/No Crank After Overnight Set
    • 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
  • Emissions - EGR Codes E48/E048/Engine Detonation/Ping
  • ECM/PCM - Driveability Symptom/Data Worksheet
  • Electrical - Wire Probing Device
  • I/M 240 Repairs - Obtaining Technical Assistance
  • 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
  • Engine - Shudder and Loss of Power
  • Engine - Effects of Top Engine Cleaner On CAT Converter
  • Engine - Detonation (Pinging), Slight Tip-in Hesitation
  • A/T - High Idle/Intermittent Code 26, Improper TPS
  • Spark Plug - New Design
  • Engine - Rough Idle/Lack of Power/Miss/Backfire
  • Engine Idle Surge, DTC 30 (Idle Speed Control) Set
  • A/T - 4T60 No Third Gear/No Drive or Reverse Conditions
  • Fuel - Hard Start After Injector R&R, Application Chart
  • Fuel - Intermittent Reduction of Power/Stall
  • Tools - Introduction Of The Fuel Injector Tester
  • ECM - Tap Test Precautions
  • Starting - Dead Battery/No Crank After Overnight Set
  • Oxygen Sensors - Silica Contamination
  • O2 Sensor - DFI Codes 13 and 45
  • Ignition System - Alternate On-Car HEI Module Test
  • Engine - HT4100 Revised Distributor Drive Gear
  • 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
  • Engine Controls - Surge or Chuggle at 52-60 MPH
  • Engine - 42-50 MPH Surge, Tip In Detonation, Hesitation
  • Fuel - Throttle Body Mounting Bolt Torque
  • Engine - Miss, Hesitation, or Roughness
  • Engine - Power Loss, Hesitation, Shudder/Backfire
  • 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
  • EVAP System - Service of Connectors
  • Fuel - Black Exhaust, Vacuum Break/Choke Pull-off Test
  • Open Circuit - Intermittent Rich Operation, DTC 15 Or 38
  • Ignition - Miss, Stumble, Hesitation, Code 53, E53, E053
  • Oxygen Sensor Test - Revised Tech 1 Mass Storage CD
  • Warranty - Driveability Problems From Add On Equipment
  • Fuel - New Float Level Gauge For Quadrajet Carburetors
  • Secondary Ignition Wire - Service Precautions
  • PROM/MEMCAL - Identification Marks
  • Instruments - Oil Pressure Connector Repair Kit
  • Fuels - Effect of Volatility On Driveability Conditions
  • Fuel - How Fuel Economy Is Determined
  • 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