Engine, Cooling and Exhaust: Technical Service Bulletins
- Customer Interest
- Engine - Diagnosing Vibration
- Engine - Remanufactured Engine High Oil Consumption
- Cooling System - Leaks
- Instruments - Indicated Overheat After Engine Start
- Intake Air Duct - Reduced Engine Performance
- A/C - Reduced Heater Performance
- Cooling System - Engine Cooling Fan Drone
- Cooling System - Excessive Fan Noise
- Engine - Rear Main Leak Condition
- Engine - Rear Main Oil Leak Diagnostics
- Emission - Driveability/Exhaust Odor/Emission Testing
- Engine - Block Heater Leaks
- Engine - Miss, Hesitation, or Roughness
- Cooling System - Lower Radiator Hose Chafing
- Engine - Oil Cooler Line Leaks
- Overview
- Oil Cooler Line Applications Chart
- C/K 1500/2500 4.3L & KC4 Internal Cooler
- K1500/2500 5.0L & KC4 5.7L & KC4 Except GT5/HC4 Internal Cooler
- C1500/2500 5.0L & KC4 5.7L & KC4 Except GT5/HC4/5A5/5A6 Internal Cooler
- C2500/3500 5.7L & KC4 & 5A5/5A6 5.7L & KC4 & GT4/GT5 External Cooler
- K2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C/K 3500 7.4L & KC4 External Cooler
- Engine - Oil Cooler Line Leaks (Replace Hose)
- Overview
- C/K 1500/2500 4.3L & KC4 Internal Cooler
- K1500/2500 5.0L & KC4 5.7L & KC4 Except GT5/HC4 Internal Cooler
- C1500/2500 5.0L, KC4 5.7L, KC4 Not GT5/HC4/5A5/5A6 Int. Cooler
- C2500/3500 5.7L, KC4, 5A5/5A6 5.7L, KC4 & GT4/GT5 Ext. Cooler
- K2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C/K 3500 7.4L & KC4 External Cooler
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- By Symptom
- Abnormal wear/deterioration
- Customer Interest
- Engine - Diagnosing Vibration
- Engine - Remanufactured Engine High Oil Consumption
- Cooling System - Leaks
- Instruments - Indicated Overheat After Engine Start
- Intake Air Duct - Reduced Engine Performance
- A/C - Reduced Heater Performance
- Cooling System - Engine Cooling Fan Drone
- Cooling System - Excessive Fan Noise
- Engine - Rear Main Leak Condition
- Engine - Rear Main Oil Leak Diagnostics
- Emission - Driveability/Exhaust Odor/Emission Testing
- Engine - Block Heater Leaks
- Engine - Miss, Hesitation, or Roughness
- Cooling System - Lower Radiator Hose Chafing
- Engine - Oil Cooler Line Leaks
- Overview
- Oil Cooler Line Applications Chart
- C/K 1500/2500 4.3L & KC4 Internal Cooler
- K1500/2500 5.0L & KC4 5.7L & KC4 Except GT5/HC4 Internal Cooler
- C1500/2500 5.0L & KC4 5.7L & KC4 Except GT5/HC4/5A5/5A6 Internal Cooler
- C2500/3500 5.7L & KC4 & 5A5/5A6 5.7L & KC4 & GT4/GT5 External Cooler
- K2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C/K 3500 7.4L & KC4 External Cooler
- Engine - Oil Cooler Line Leaks (Replace Hose)
- Overview
- C/K 1500/2500 4.3L & KC4 Internal Cooler
- K1500/2500 5.0L & KC4 5.7L & KC4 Except GT5/HC4 Internal Cooler
- C1500/2500 5.0L, KC4 5.7L, KC4 Not GT5/HC4/5A5/5A6 Int. Cooler
- C2500/3500 5.7L, KC4, 5A5/5A6 5.7L, KC4 & GT4/GT5 Ext. Cooler
- K2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C/K 3500 7.4L & KC4 External Cooler
- Engine, A/T - Shift/Driveability Concerns/MIL ON
- Driveability
- Erratic Operation
- Erratic Shifting
- High emissions
- Leaks
- Cooling System - Leaks
- A/C - Apparent Leaks At the Heater Core
- Engine - Rear Main Leak Condition
- Engine - Rear Main Oil Leak Diagnostics
- Engine - Block Heater Leaks
- Engine - Improved Head Gasket
- Cooling System - Lower Radiator Hose Chafing
- Engine - Oil Cooler Line Leaks
- Overview
- Oil Cooler Line Applications Chart
- C/K 1500/2500 4.3L & KC4 Internal Cooler
- K1500/2500 5.0L & KC4 5.7L & KC4 Except GT5/HC4 Internal Cooler
- C1500/2500 5.0L & KC4 5.7L & KC4 Except GT5/HC4/5A5/5A6 Internal Cooler
- C2500/3500 5.7L & KC4 & 5A5/5A6 5.7L & KC4 & GT4/GT5 External Cooler
- K2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C/K 3500 7.4L & KC4 External Cooler
- Engine - Oil Cooler Line Leaks (Replace Hose)
- Overview
- C/K 1500/2500 4.3L & KC4 Internal Cooler
- K1500/2500 5.0L & KC4 5.7L & KC4 Except GT5/HC4 Internal Cooler
- C1500/2500 5.0L, KC4 5.7L, KC4 Not GT5/HC4/5A5/5A6 Int. Cooler
- C2500/3500 5.7L, KC4, 5A5/5A6 5.7L, KC4 & GT4/GT5 Ext. Cooler
- K2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C/K 3500 7.4L & KC4 External Cooler
- Loose
- Noise
- Odors
- Overheating
- Poor performance
- Smoke, Fumes
- Starting problems
- Vibration
- All Technical Service Bulletins
- Vehicle - Engine And Sub Systems Flushing Info. (CANADA)
- Vehicle - Engine And Sub-Systems Flushing Recommendations
- Engine - Blue Smoke On Start-Up
- Engine - Diagnosing Vibration
- Engines - ACDelco Remanufactured
- Engine - Surface Conditioning Discs Precautions
- Engine - AC Delco Remanufactured Engines
- Engine - Remanufactured Engine High Oil Consumption
- Cooling System - Factory Use of Stop Leak
- Engine Coolant - Testing Information
- Cooling System - Leaks
- Engine Overheat - Snowplows Vs Air Flow
- Instruments - Indicated Overheat After Engine Start
- Ignition System - Spark Plug Usage Change
- Intake Air Duct - Reduced Engine Performance
- A/C - Reduced Heater Performance
- A/C - Apparent Leaks At the Heater Core
- Cooling System - Engine Cooling Fan Drone
- Cooling System - Excessive Fan Noise
- A/T - Intermittent Downshift/Slip/Cycling Diagnosis
- Cooling - Radiator Repair/Replacement Guidelines
- Engine - Rear Main Leak Condition
- Engine - Rear Main Oil Leak Diagnostics
- Engine - Serpentine Belt W/ Worn Idler Pulley/Tensioner
- Interior - Vibration In Seat & Steering Wheel
- Engine - Generator Belt Tension
- Emission - Driveability/Exhaust Odor/Emission Testing
- Oil Filters - Enhanced Anti-Drainback Valves
- Engine - Block Heater Leaks
- Engine - Miss, Hesitation, or Roughness
- Cooling - New Style Hose Clamp
- Engine - Improved Head Gasket
- Engine - Updated Head Gaskets
- Cooling System - Antifreeze Recycling
- Coolant - Recycling Update
- Coolant - Information on Propylene Glycol Usage
- Warranty - Recycled Engine Coolant Policy
- Coolant - Usage/Specifications
- Engine Coolant - Recycling
- Cooling System - Lower Radiator Hose Chafing
- Intake Manifold Gasket - Correct Installation
- Intake Manifold Gasket - Installation
- Engine - Oil Cooler Line Leaks
- Overview
- Oil Cooler Line Applications Chart
- C/K 1500/2500 4.3L & KC4 Internal Cooler
- K1500/2500 5.0L & KC4 5.7L & KC4 Except GT5/HC4 Internal Cooler
- C1500/2500 5.0L & KC4 5.7L & KC4 Except GT5/HC4/5A5/5A6 Internal Cooler
- C2500/3500 5.7L & KC4 & 5A5/5A6 5.7L & KC4 & GT4/GT5 External Cooler
- K2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C/K 3500 7.4L & KC4 External Cooler
- Engine - Oil Cooler Line Leaks (Replace Hose)
- Overview
- C/K 1500/2500 4.3L & KC4 Internal Cooler
- K1500/2500 5.0L & KC4 5.7L & KC4 Except GT5/HC4 Internal Cooler
- C1500/2500 5.0L, KC4 5.7L, KC4 Not GT5/HC4/5A5/5A6 Int. Cooler
- C2500/3500 5.7L, KC4, 5A5/5A6 5.7L, KC4 & GT4/GT5 Ext. Cooler
- K2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C2500/3500 7.4L & KC4 Except 5A5/5A6 Internal Cooler
- C/K 3500 7.4L & KC4 External Cooler
- Engine Controls - Idle Speed/Minumum Idle Air Rate Specs
- 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.