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Home >> Chevrolet >> 2023 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Mechanical - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Base Engine Misfire with Coolant Consumption

Base Engine Misfire with Coolant Consumption

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Inspection Action
DEFINITION: Base engine misfire with coolant consumption
Preliminary Inspection Verify that there are no external coolant leaks. Refer to Symptoms - Engine Cooling .
Isolate Affected Cylinders
  • Cylinder balance test with scan tool
  • Cooling system pressurization
  • Inspection of glow plugs
  • Compression test
EGR System Inspection
  • Inspect EGR valve and intake system for evidence of coolant leakage.
  • Replace the EGR cooler if any problem is found.
Cylinder Head Gasket Leakage
  • Remove cylinder heads of the affected cylinder bank and inspect for damage.
  • Replace components as necessary.
Cylinder Head or Engine Block Damage.
  • Inspect the cylinder head for cracks.
  • Inspect the cylinder block for damage.
  • Inspect the cylinder block to head mating surface for straightness.
  • Replace components as necessary.