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this oil light is just to let you know it is time to change the oil...you need to rest it after you change the oil each time....the lifter noise may be caused form the o-ring at the oil pick up strainer,the oil pan would need to be removed to replace this
GM OIL LIFE SYSTEM - RESETTING The engine oil life monitor will indicate when to change the engine oil - usually between 5,000 km (3,000 miles) and 16,000 km (10,000 miles) since the last oil change. Under severe conditions, the "CHANGE OIL SOON" light may be displayed before 5,000 km (3,000 miles). The vehicle must not be driven more than 16,000 km (10,000 miles) or 12 months without an oil change.The engine oil life monitor will not detect dust in the oil. If the vehicle is driven in a dusty area, be sure to change the oil every 5,000 km (3,000 miles) or sooner if the "CHANGE OIL SOON" light is displayed. Reset the oil life monitor when the oil has been changed, use the following procedure.
File In Section: 06 - Engine/Propulsion System
Bulletin No.: 02-06-01-038
Date: December, 2002
Some customers may comment on an engine tick noise. The distinguishing characteristic of this condition is that it likely will have been present since new, and is typically noticed within the first 161-322 km (100-200 mi). The noise may often be diagnosed as a collapsed lifter. Additionally, the noise may be present at cold start and appear to diminish and then return as the engine warms to operating temperature. This noise is different from other noises that may begin to occur at 3219-4828 km (2000-3000 mi).
The 0-ring seal between the oil pump screen and the oil pump may be cut, causing aeration of the oil.
Inspect the 0-ring seal and replace as necessary. Use the applicable part number listed below. Refer to the Engine Mechanical sub-section of the appropriate Service Manual.
Parts are currently available from GMSP0.
Installation Note: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems
I thought I would let you know how the project went. I wish that was as easy as the instructions. I had to drop the front differential and the exhaust to get the oil pan out. It really sucked. And to top it all off, the engine still rattles after installing the new o-ring. It helped a little but for the amount of work to do the job I'm not very happy with the results. Any other suggestions would be much appreciated.
is the oil pressure good now?
is the rattle on top of the engine,or,the bottom?
tell me all you can
Oil pressure is between 60 and 70 lbs. The noise seems to be from the bottom end. It doesn't sound like a lifter. It's not a tick sound, more like a knock sound. It's not as loud the warmer the engine gets.,
this don't sound good at all
to me it sounds as if you have a bad connecting rod bearing...if this is the case,you will need a complete crank kit installed....you will need to remove the oil pan again and shake the rods that connect to the crank,sense it does knock,,,you should find the one that is loose