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Home >> GMC >> 1999 >> Yukon Base, 4WD >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Power Door Lock System >> System Tests >> Notes

System Tests: Notes

CAUTION: When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article before disconnecting battery.
SYSTEM TESTS

Fault Condition Test
Door Locks Do Not Operate From Either Switch TEST A 
Both Switches Only Open One Door Lock TEST B 
Door Locks Only Work From One Lock Switch TEST C 
Door Lock Motors Do Not Operate TEST D 
Both Switches Only Open One Door Lock TEST E 
Door Locks Only Work From One Lock Switch TEST F 
Cargo Door Lock Motor Does Not Lock And/Or Unlock TEST G