Hi sporttster, Welcome to 2carpros and TY for the donation
Oil Pressure specs
With engine at normal operating temperature, oil pressure should be at least 6 psi (0.4 kg/cm2 ) at 1000 RPM, 18 psi (1.3 kg/cm2 ) at 2000 RPM and 24 psi (1.7 kg/cm2 ) at 4000 RPM.
TSB Reference Number(s): 02-06-01-038, Date of Issue: December 2, 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 O-ring seal between the oil pump screen and the oil pump may be cut, causing aeration of the oil.
Inspect the O-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.
12557752Seal-O/Pmp (O-ring) (F & Y Cars)1
12563963Seal-O/Pmp (O-ring) (C/K Trucks)1
Parts are currently available from GMSPO.
For vehicles repaired under warranty, use:
Labor OperationDescriptionUsageLabor Time
J1060Pickup Tube and Screen - ReplaceF Car3.7 hrs
""Y Car4.3 hrs
""C Truck1.3 hrs
""K Truck2.1 hrs
Wednesday, October 6th, 2010 AT 2:03 PM