Had there ever been any concern of oil consumption, or rough run that was a result of low oil level? The acceptable rate of consumption is 1 quart in 2000 miles as illustrated in GM bulletin 01-06-01-011D, and you vehicle has no oil level sensor. With that being said, this is an exerpt from your owners manual, under the maintenance heading, that would release them from any liability for warranty. This would especially be the case if you had no, or limited, history of doing business with your GM dealer.
At Each Fuel Fill
It is important to perform these underhood checks at each fuel fill.
Engine Oil Level Check
Notice: It is important to check the engine oil regularly and keep it at the proper level. Failure to keep the engine oil at the proper level can cause damage to the engine not covered by the vehicle warranty.
Check the engine oil level and add the proper oil if necessary. See Engine Oil.
Engine Coolant Level Check
Check the engine coolant level and add DEX-COOL coolant mixture if necessary. See Engine Coolant.
Windshield Washer Fluid Level Check
Check the windshield washer fluid level in the windshield washer fluid reservoir and add the proper fluid if necessary.
Tuesday, August 23rd, 2011 AT 8:14 PM