| Subject: | How To Reset The "CHECK OIL LEVEL" Message |
| Models: | 2002-2006 Cadillac Escalade, ESV, EXT |
| 1999-2007 Chevrolet Silverado Classic |
| 2000-2006 Chevrolet Avalanche Suburban, Tahoe |
| 1999-2007 GMC Sierra Classic |
| 2000-2006 GMC Yukon and Yukon Denali Models |
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
The "CHECK OIL LEVEL" message may display after a repair, if the key is left on when doing an oil change, or after topping off the engine oil due to a low oil condition. When using the Tech 2® to view the engine data parameter "Engine Oil Level Switch"
it will show "OK", but the "Check Oil Level" message will still be displayed on the DIC. This could be caused because the engine coolant temperature criteria, to reset the "Check Oil Level", has not been met. The system must see a 50°F (10°C) drop
in engine coolant temperature to recheck the engine oil level and if the level is okay then the DIC message will turn off.
Recommendation/Instructions:
To correct this concern, allow the engine to run until operating temperature is reached and then shut the engine off and allow the engine to cool down for about 1 to 2 hours with the key in the off position. Upon the next key cycle, if the engine oil
level is okay, the DIC message will be off.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
