4AJ — Interior trim: Jet Black/Dark Titanium. This code identifies the factory upholstery material, color combination, or interior trim specification. Browse RPO codes →
My 2022 Chevrolet Silverado 1500 has code 4AJ, described as “Interior trim: Jet Black/Dark Titanium. This code identifies the factory upholstery material, color combination, or interior trim specification” I understand the basic definition, but I am interested in the practical effect during normal driving, towing, or highway use.
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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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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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If you are documenting the vehicle, save both the original wording and the readable explanation. That preserves the factory terminology while making the record understandable later.
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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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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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I would start by checking the original build sheet and then compare the physical equipment on the vehicle. A sales or option code confirms the factory record, but it does not prove that every original component is still installed.
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I have seen this on a similar Chevrolet Silverado 1500. The basic description was correct, but one related feature was part of a separate package. I would not assume the code includes every item mentioned in marketing material.
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