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GMC Yukon XL 2000–2006

GMC Yukon XLModel years 2000–2006

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2 conditions added

Common on this vehicle:Warning lightHard start or long crankDoes not startNoise

Possible causes

Warning light, P03048 records
Engine
Brakes
Transmission and driveline
Electrical, wiring and power
Exhaust and emissions
Fuel system
1Single-cylinder misfire (P0300-P0308) and/or chirp, squeak or tick at camshaft speed: worn cam lobe / lifter, valve or valve spring0Crankshaft position sensor may work intermittently or fail (8.1L V8) - recall 07V-5210Intake manifold gasket leak (cold idle misfire, lean codes)0P0300 after engine repairs: injector connectors crossed (cylinders 5-7 / 6-8)0Rear bank knock sensor corrosion from water intrusion (P0332)0Brake pipe (brake line) corrosion and rupture0ABS light with C0265/C0201/U1041 or no communication with brake module (EBCM ground G110)0Front right-hand brake pipe contact with body cross sill - recall 00V-3450Service Brake Booster message on a Hydroboost vehicle with DTC C0136 (instrument cluster not SPS programmed)0Stability System Disabled / Service Stability message with DTC C0455 (bent terminals at the steering wheel position sensor)0Transfer case service light, New Venture Gear transfer case (replace the encoder motor sensor and reprogram the TCCM)0Intermittent battery lamp with history DTC B1489 after BGCM replacement (module not SPS programmed)0Intermittent MIL, service lamps/messages or DTCs from connector fretting corrosion0Reduced Engine Power from throttle body connector crimp, broken wire or grounds0P0420 / P0430 on a new or just-replaced catalytic converter (break-in not completed)0Fuel module reservoir assembly: fuel pump wire connectors may overheat - recall 05V-1550DTC P0446 set with the SES lamp on (replace the EVAP vent solenoid, not the canister)
6 causes not drawn

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 XL 2000–2006・Warning light, P0304

Candidate cause (the documents say what to do)

Single-cylinder misfire (P0300-P0308) and/or chirp, squeak or tick at camshaft speed: worn cam lobe / lifter, valve or valve spring

Customers may complain of an SES light, engine misfire and/or engine noise.

A verified noise is not eliminated by canceling fuel injectors and occurs at camshaft speed (half of crankshaft speed).

How to tell

P0300P0301P0302P0303P0304Check engine / Service Engine Soon

What to do

  1. If pressing on the valve side of the rocker changes the noise, a lifter and/or cam lobe concern on that cylinder is most likely.
  2. The misfiring/ticking cylinder should have less cam lobe lift than comparison cylinders if a worn lifter roller and/or cam lobe is the cause.
  3. During the noise, press with a wooden hammer handle on the rocker arms at the valve side, push rod side, and side of the rocker to find which one is making noise.
  4. Measure the cam lobe lift at the push rod side of the rocker arm.
  5. A good indicator of a sticking valve is engine misfires that continue to count on an aggressive deceleration with engine braking.
  6. Release the air pressure from the cylinder and work the valve up and down in the guide while turning it 360 degrees; if any binding is felt, a stem to guide clearance concern exists.
Read the remaining 9 steps

Caution: A damaged cam lobe is easy to overlook when inspecting through the lifter bores; unworn lifter rollers do not mean the cam lobes are okay.

In the records

No record states work done for this cause.

See the evidence (2 technical documents, 1 records)

Passages of the technical documents

  • GMC Yukon Models 2002 - 2018 All All V8 ALL

    General Motors (published by NHTSA) 2018-10-16

  • Some customers may complain of a SES light, engine misfire, and/or engine noise.

    General Motors (published by NHTSA) 2018-10-16

  • If a noise is verified, it will not be eliminated by canceling fuel injectors and the noise will occur at camshaft speed (half of crankshaft speed).

    General Motors (published by NHTSA) 2023-04-24

  • The noise may be described as a chirp, squeak, squeal or tick noise and may increase off of idle.

    General Motors (published by NHTSA) 2023-04-24

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Manufacturer’s documents

Records

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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.