This link will take you to where you can download a manual for free. If you have a light that looks like an oil can on, this indicates a low engine oil pressure condition. I recommend not to drive the vehicle until repaired.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
If the oil pressure is otherwise normal except when you are running at higher speeds i suspect the relief valve on the oil pump is sticking in the open or partially open position at constant higher engine speeds.
You will need to have the oil pressure on the engine properly tested by a professional and the cause of the low oil pressure diagnosed. If you drive the car on low oil pressure you will cause very expensive internal engine damage many multiple times the cost of fixing the current problem.
Insufficient engine oil changes for the type of vehicle use (a practice which most owners follow because they usually do the absolute minimum thinking they will save money) causes sludge build up in the engine and these kinds of issues that you have now. Most owners are even too lazy to routinely and frequently check under bonnet fluid levels between services - engine oil level, coolant level, power steering fluid level etc.
When it's cold outside, the oil inside the engine is just as cold. My 99 Silverado does not like starting when the temp gets below 10 degrees any more than I like going out in that temp and starting it. I have the engine block heater in my truck and I ALWAYS plug it in the evening before I know I'm going to use it. I also run Mobil 1 Full Synthetic 5W30 oil in it. 5W30 is a very light oil that will resist cold weather thickening sufficiently enough that it will start flowing immediately after starting. I know some people think that a heavier oil should be used in the winter, but that is absolutely wrong thinking. USE THE LIGHTEST OIL YOUR OWNERS MANUAL RECOMMENDS IN WINTER!!!!!!!!! Most modern vehicles owners manuals recommend 5W30 used year-round as the recommended oil, but 10W30 may be used if the temp will be above 0 degrees for the majority of the next oil service life. However, the most modern vehicles, i.e. those built since 2008 may require 5W30 only, or 5W20 as well. CHECK YOUR OWNERS MANUAL FOR THE PROPER OIL WEIGHT FOR YOUR VEHICLE!!!!!!! Some vehicles even go so far as to REQUIRE synthetic oil. Any 2011 or newer GM vehicle MUST use synthetic oil that has Dexos on the label. At this time, only synthetic oils have the Dexos rating in them. If your vehicle calls for using only 0W20, then only synthetic oils are made to 0W20 specs. DO NOT USE ANY WEIGHT OF OIL YOUR ENGINE IS NOT RATED TO USE!!!!! Just forget about 10W40 or 20W50. Your dealership will just look at you and tell you your broken engine no longer is covered by the manufacturers warranty if you use an unapproved oil for your engine. Again, check your owners manual for the recommended oil weight for your vehicle.
If your oil light is on, it means that the control module thinks there is no oil pressure. It could be a bad oil pressure sending unit, or it could be that the oil pump is out and that the engine is actually not getting oil. The engine would need to have a mechanical gauge put on to find out if it does have pressure.
It could be the low oil pressure warning light. That light looks like an oil can with one drip of oil on the tip. If that is the light it is telling you the oil pressure in the engine is low. You might want to check with a dealer to make sure if you don't have an owners manual.
The TPMS lamp should go out when the proper air pressure in all tires is detected. Too much pressure will cause it to light also. The low threshold is somewhere in the 24-27lb range, dunno what the upper limit is, but one member at R4W had 44lbs, IIRC, and the lamp wouldn't go out until he dropped it back down. Some members run 38lbs and get away with it, but I run the recommended 32lbs and don't have any problems. Out of spec tire pressure does not cause the maintenance required lamp or the MIL to light up, see page 161 of the owner's manual. The maintenance required lamp will light up every 5000 miles as a reminder to change the engine oil, see page 136 of the manual for reset instructions.
The proper way to determine what's going on in your engine is to install a temporary (or permanent) mechanical gauge. (yours is electro -mechanical) your oil pressure changes with engine rpm but at idle, it should not drop below 15psi (I don't accept less than 20). The gauge and light is set to come on at a pressure that is just a bit higher than the max low pressure so you have a chance to correct the cause without destroying the engine. (though sometimes even that repair can be expensive). Since the gauge setup or having someone put a gauge on there costs more than a new sending unit for your current arrangement, I'd suggest you replace the sender and if you see identical readings, then you need to have the oil pan removed and the crankshaft bearings and oil pump looked at. Doing nothing can cost you an engine.
If the oil can light goes on, check the level in the crankcase by checking the oil dipstick under the hood. It may be low.
If it is at a full level, then the oil light may indicate low oil pressure. Change the oil and filter to see if the condition improves. If it doesn't, then the oil pump may be bad. One can test the pressure of the oil while the engine is running by putting a gauge on the area where the oil pressure sending unit is, and reading the value to see if it is within specifications.