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Old 01-08-2023, 06:11 PM   #1
DeadheadNM
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Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,287
Frozen door lock cylinder - suggestions?

Despite repeated use of penetrating oil the RH door lock cylinder in my 99 k2500 is still “frozen” such that twisting the key won’t rotate the cylinder. I can unlock it from the inside and the remote actuator works fine.

Unless anyone can give me some other suggestions I’m assuming I’ll have to disassemble the door to access the cylinder for (presumed) rust debridement.

Anything else to prep for if I disassemble the door? Clean, grease, and lube the moving parts? I’ve not yet dug inside the door of a GMT400.
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