Can the 58C option be added after production?

Interior & Comfort · 2013 GMC Sierra 1500 · 1,033 views · 7 replies

58C — Cloth interior trim: Light Neutral/Medium Dark Neutral. This code identifies the factory upholstery material, color combination, or interior trim specification. Browse RPO codes →

Jan 12, 2026 · Arizona

I am researching whether the 58C configuration can be added to a 2013 GMC Sierra 1500. The code is described as “Cloth interior trim: Light Neutral/Medium Dark Neutral. This code identifies the factory upholstery material, color combination, or interior trim specification” I am not looking for a shortcut; I want to know what must be verified before buying parts.

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7 replies

Jan 14, 2026

Before buying, I would inspect the relevant component and take a photo of its label or part number. That often resolves whether the vehicle still has the factory configuration associated with 58C.

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Jan 17, 2026

That code should be read as a factory configuration identifier, not necessarily a guarantee of a separate dashboard control. Some equipment operates automatically or is bundled with another system.

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Jan 21, 2026

If the feature is listed but not working, scan all related modules before assuming it was removed. A stored fault, replacement module, or configuration mismatch can make original equipment appear absent.

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Jan 23, 2026

I would avoid buying retrofit parts until the connectors and module support are confirmed. Returning electronic or VIN-programmed components can be difficult.

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Jan 25, 2026

For a retrofit, check the modules, wiring connectors, software configuration, and compatible part numbers first. Installing the visible component alone may not make the feature operational.

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Jan 31, 2026

The dealer should be able to pull a VIN-specific equipment or parts record. Ask them to search by VIN rather than entering only the three-character code.

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Feb 1, 2026

The wording may be abbreviated because these were originally production codes rather than consumer descriptions. “Cloth interior trim: Light Neutral/Medium Dark Neutral. This code identifies the factory upholstery material, color combination, or interior trim specification” is a reasonable plain-English reading, but the exact implementation should be verified for the 2013 model.

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