Skip to content
FaultCrate
日本語Open preview: everything readable

This is an open preview: every record can be read without an account. The details of the plans are in preparation.

GMC Yukon XL 2000–2006

GMC Yukon XLModel years 2000–2006

Change vehicle →
Clear the search
2 conditions added

Common on this vehicle:Warning lightLeakSmoke or fire

Possible causes

Warning light, P04205 records
Exhaust and emissions
Brakes
Transmission and driveline
Electrical, wiring and power
Engine
Fuel system
4P0420 / P0430 on a new or just-replaced catalytic converter (break-in not completed)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 grounds0Crankshaft position sensor may work intermittently or fail (8.1L V8) - recall 07V-5210Intake manifold gasket leak (cold idle misfire, lean codes)0Single-cylinder misfire (P0300-P0308) and/or chirp, squeak or tick at camshaft speed: worn cam lobe / lifter, valve or valve spring0P0300 after engine repairs: injector connectors crossed (cylinders 5-7 / 6-8)0Rear bank knock sensor corrosion from water intrusion (P0332)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, P0420

Candidate cause (the documents say what to do)

P0420 / P0430 on a new or just-replaced catalytic converter (break-in not completed)

An SES light may occur on low-mileage vehicles or vehicles that recently had the catalytic converter replaced.

DTCs P0420 and/or P0430 may be stored.

How to tell

P0420P0430Check engine / Service Engine Soon

What to do

  1. If the diagnostics still do not pass, perform SI diagnostics and repair as necessary.
  2. On a new/low mileage vehicle with these DTCs, use the Tech 2 to verify engine run time on the Engine Hour Meter in the IPC Data Display/Data 1 List.
  3. Finally, restart the engine and operate the vehicle at the conditions for running the DTC P0420/430 tests, and make sure the vehicle passes them.
  4. If this occurs, clear the DTCs and perform the drive cycle.
  5. Drive vehicle at sustained highway speed for 25 to 30 minutes.
  6. Drive cycle step: after the engine has been off for 1 minute, restart and resume highway speed for an additional 10 to 15 minutes.

In the records

No record states work done for this cause.

See the evidence (2 technical documents, 4 records)

Passages of the technical documents

  • GMC Yukon Models 2002 - 2018 All All V8 ALL

    General Motors (published by NHTSA) 2019-03-06

  • A SES light may be experienced on low mileage vehicles, or vehicles that have recently had the catalytic converter replaced.

    General Motors (published by NHTSA) 2019-03-06

  • Upon inspection, DTCs P0420 and/or P0430 may be stored.

    General Motors (published by NHTSA) 2019-03-06

  • the catalytic converter may not have completed a thorough break-in cycle after replacement, possibly resulting in a false DTC P0420 and/or P0430.

    General Motors (published by NHTSA) 2019-03-06

Read every statement and its source →

Manufacturer’s documents

Records

None among the records that can be opened now.

See all 4 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.