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GMC Yukon 2000–2006

GMC YukonModel years 2000–2006

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2 conditions added

Common on this vehicle:NoiseWarning lightCorrosion or rustLeakMisfire or rough idleAir conditioning or heaterReduced brakingLights (headlights, turn signals)

Possible causes

Misfire or rough idle, 200255 records
Engine
9Intake manifold gasket leak (cold idle misfire, lean codes)7Single-cylinder misfire (P0300-P0308) and/or chirp, squeak or tick at camshaft speed: worn cam lobe / lifter, valve or valve spring5Engine Block1P0300 after engine repairs: injector connectors crossed (cylinders 5-7 / 6-8)1Slight roughness at idle with no DTCs (possible characteristic)

The documents say what to doOnly records name itThe size of a node, the width of a link and the numbers are records matching this search, not likelihoods.

FaultCrate・GMC Yukon 2000–2006・Misfire or rough idle, 2002

Candidate cause (the documents say what to do)

Intake manifold gasket leak (cold idle misfire, lean codes)

The bulletin describes a cold engine idle misfire with DTCs P0171, P0174 or P0300.

The bulletin states the intake gasket seals may leak around the intake ports, causing the lean condition.

How to tell

P0171P0174P0300Check engine / Service Engine Soon

What to do

  1. The seals may leak around the bottom side of the port, which makes the vacuum leak hard to detect.
  2. Lower-than-normal MAF readings may be seen if the intake seals are leaking.
  3. An intake manifold with warpage in excess of 3mm (.118 in.) over a 200mm (7.87-in.) area must be replaced.
  4. Measure the intake manifold for warpage across two runner ports only.
  5. Only the current teal green gaskets should be used; the old gaskets were orange.
  6. The intake bolts must be replaced and not reused.
Read the remaining 1 steps

Caution: Do not measure the intake manifold across all four intake runner ports.

In the records

No record states work done for this cause.

See the evidence (1 technical documents, 9 records)

Passages of the technical documents

  • Affected vehicles include 2002-05 Cadillac Escalades, 1999-2005 Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe and Trailblazer models, 1999-2005 GMC Savana, Sierra and Yukon models, and 2003-05 HUMMER H2s.

    MOTOR Magazine 2017-02-06

  • It describes a cold engine idle misfire, with DTCs P0171 P0174 or P0300.

    MOTOR Magazine 2017-02-06

  • The TSB states that the intake gasket seals may be leaking around the intake ports, causing the lean condition.

    MOTOR Magazine 2017-02-06

  • Leaks typically occur when the engine is cold, and may subside as the engine warms.

    MOTOR Magazine 2017-02-06

Read every statement and its source →

Records

None among the records that can be opened now.

See all 9 records of this cause →

A cause or a result a complaint states is the owner’s view or what a dealer told them, not an established fact.

Put together by FaultCrate from public records and technical documents. The cause and the repair are for the workshop to decide with the vehicle in front of it. Counts are records, not failure rates.