K Yukon/Denali 4WD V8-5.7L VIN R (2000)
Oil Pressure Gauge: Description and Operation
The oil pressure gauge displays the engine oil pressure. Current flow through two coils moves the pointer of the gauge and is similar in operation to the
fuel gauge. The oil pressure sender senses engine oil pressure sending resistance through CKT 31 (TAN) to pin 15 of the I/P Cluster.
The oil sender has a low resistance (approximately 0 ohms) when the oil pressure is low (0 psi), and a high resistance (approximately 90 ohms) when the
oil pressure is high (80 psi).
