GMC Yukon XL 2000–2006

▸Known issuesHigher than expected oil consumption at 8600 GVW and above (accepted rate and consumption test)2

1. Manufacturer communication2001–2006 GMC YUKON XL DENALI ・ 2025-01-17

   Oil Consumption Measurement and Loss of Oil Service Bulletin

   1. 1Fault

      Not stated

      ↓→

   2. 2Finding the cause

      Possible causes

      • Towing a trailer or hauling additional weight will increase oil consumption.

      Steps to confirm (in the document’s order)

      1. The accepted rate of oil consumption for gasoline engines in vehicles at or above 8600 GVW is stated as 1 liter (1 qt) within 400 liters (100 gallons) of fuel used.
      2. Inspect the oil pans, engine covers and the engine oil cooler for leakage, and inspect for oil leakage into the engine coolant.
      3. Verify that the positive crankcase ventilation (PCV) system is operating properly; blockages, restrictions or damage to the PCV system can result in increased oil use.
      4. Wait at least 15 minutes after the engine is shut off before checking the oil level, so most of the oil has drained back into the crankcase.
      5. Check the oil level and record the vehicle mileage, date and exact oil level on the bulletin's form, then make sure the oil level is at, but not above, the full mark on the dipstick, adding oil if necessary.

      1 more points
      ↓→

   3. 3Correction

      Repair

      1. If the final evaluation shows the engine uses more than 0.946 liter (1 qt) in 379 liters (100 gallons) of fuel used, follow the published symptom diagnostics in the appropriate Service Manual.
      2. The labor operation for the oil consumption test is 0600334, 0.5 hr.

      Caution

      • Part of the oil film left on the cylinder wall is consumed during combustion, so varying rates of oil consumption are accepted as normal in all engines.
      • This rate applies only to vehicles under warranty, maintained per the appropriate maintenance schedule, driven at legal speeds and within the design intent of the vehicle.
      • Oil economy should not be tested until the vehicle has accumulated at least 6400 km (4000 mi), except when an engine is reported to be using more than 0.946 liter (1 qt) in 1600 km (1000 mi).
   Read the sentences of the record

   From the manufacturer’s document

   • Applies to：The model list includes the 2000–2019 Yukon XL, among other GM trucks and vans, with a gasoline engine and rated at 8600 GVW and above (note: the Yukon XL range runs to 2019).
   • Caution：Part of the oil film left on the cylinder wall is consumed during combustion, so varying rates of oil consumption are accepted as normal in all engines.
   • Confirm：The accepted rate of oil consumption for gasoline engines in vehicles at or above 8600 GVW is stated as 1 liter (1 qt) within 400 liters (100 gallons) of fuel used.
   • Caution：This rate applies only to vehicles under warranty, maintained per the appropriate maintenance schedule, driven at legal speeds and within the design intent of the vehicle.
   • Confirm：Inspect the oil pans, engine covers and the engine oil cooler for leakage, and inspect for oil leakage into the engine coolant.
   • Confirm：Verify that the positive crankcase ventilation (PCV) system is operating properly; blockages, restrictions or damage to the PCV system can result in increased oil use.
   • Cause：Towing a trailer or hauling additional weight will increase oil consumption.
   • Caution：Oil economy should not be tested until the vehicle has accumulated at least 6400 km (4000 mi), except when an engine is reported to be using more than 0.946 liter (1 qt) in 1600 km (1000 mi).
   • Confirm：Wait at least 15 minutes after the engine is shut off before checking the oil level, so most of the oil has drained back into the crankcase.
   • Confirm：Check the oil level and record the vehicle mileage, date and exact oil level on the bulletin's form, then make sure the oil level is at, but not above, the full mark on the dipstick, adding oil if necessary.
   • Confirm：Ask the customer to schedule an appointment and return to the dealer for inspection once they have consumed 100 gallons (= 378.5 L) of fuel.
   • Repair：If the final evaluation shows the engine uses more than 0.946 liter (1 qt) in 379 liters (100 gallons) of fuel used, follow the published symptom diagnostics in the appropriate Service Manual.
   • Repair：The labor operation for the oil consumption test is 0600334, 0.5 hr.

   Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

   Remedy

   This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.

2. Owner complaint2001 GMC YUKON XL ・ 2003-03-17

   8.2L engine burns oil excessively

   1. 1Fault

      Not stated

      ↓→

   2. 2Finding the cause

      Not stated

      ↓→

   3. 3Correction

      • Intake Gasket: replaced (says it did not fix it)
      • PCV Valve: replaced (says it did not fix it)