How does 00Z affect everyday driving?

What is a GM build sheet?

A build sheet is General Motors' own factory assembly record for a specific VIN. It lists the RPO (Regular Production Option) codes the vehicle was built with — every package, individual option, paint and trim selection, axle ratio, and equipment group — exactly as it left the plant.

Where a window sticker is written for the buyer with plain descriptions and pricing, the build sheet is the underlying code-level truth. It's the most reliable way to confirm how a used Chevrolet, Buick, Cadillac, or GMC was originally configured, long after the original paperwork is gone.

Window sticker vs. build sheet

Newer GM vehicles (roughly 2020 and later) usually have the original window sticker PDF on file — the Monroney label with standard and optional equipment, fuel economy, warranty, and the full MSRP breakdown.

When a window sticker isn't on file, this tool automatically falls back to the build sheet: the list of RPO codes with their descriptions. Either way you come away with the factory record of how the vehicle was equipped.

RPO codes explained

Every factory option on a GM vehicle has a three-character RPO code — for example a specific paint, a tow package, a sunroof, or an audio system. These codes are also printed on the label inside the glovebox or spare-tire well.

The build sheet pairs each code with a readable description, so you can translate a glovebox full of codes into the actual packages and features the vehicle carries. That makes it easy to verify a seller's claims or settle exactly which options are factory.

How does 00Z affect everyday driving?

Safety & Driver Assistance · 2006 GMC Canyon · 966 views · 1 reply

00Z — Not equipped with front and rear park assist and reverse automatic braking (contact a GM dealer for details). This code confirms that the listed factory feature was omitted when the vehicle was built. Browse RPO codes →

Grace W. May 29, 2026 · Ontario

I am comparing two otherwise similar vehicles. One has 00Z: “Not equipped with front and rear park assist and reverse automatic braking (contact a GM dealer for details). This code confirms that the listed factory feature was omitted when the vehicle was built” How noticeable is the difference in real-world use, and are there any maintenance considerations?

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Ben H. Jun 2, 2026

My experience has been positive, but the benefit depends on how the vehicle is used. I would treat 00Z as confirmation of the configuration, then evaluate whether that equipment matters for your driving.

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