Question 1

Do you use OEM or aftermarket keys on Cadillac vehicles?

Accepted Answer

We use OEM spec keys that are verified for your specific Cadillac model. On newer push-to-start Cadillacs, some models require CAN-FD compatible keys and PIN-based programming, which means cheap aftermarket or used fobs may not program at all. Cadillac is GM underneath, and while the internal electronics are shared across Chevy, GMC, and Cadillac, the branding and build quality differ. GM-specialist locksmiths say the chips work the same but the shells and buttons on cheap aftermarket keys fail earlier. We match the correct blank, chip, and frequency to your vehicle before we ever head to your location.

Question 2

How long will the replacement key last?

Accepted Answer

A properly programmed Cadillac key should last as long as your original. The electronics are the same quality, and the programming does not degrade over time. OEM Cadillac key fobs typically last five to seven years under normal use, with some owners reporting their originals still working after ten years. The most common wear point is the physical shell and buttons. One 2009 DTS owner said the buttons started failing after about six years while the electronics were still fine. If your shell cracks, a locksmith can often transplant the electronics into a new case for a fraction of the cost of a full replacement.

Question 3

What if the new key stops working after a few weeks?

Accepted Answer

Call us. Every key we make is covered under warranty. If the key stops starting the car, loses remote function, or develops any issue, we come back and make it right. This is one of the biggest risks with buying a key online or using a locksmith who will not stand behind the work. One ATS owner had an aftermarket fob work for about 18 months before the remote start stopped entirely while the original key kept working fine. We test everything before we leave and back it up after.

Question 4

How many buttons does the 2004 Cadillac Seville key have?

Accepted Answer

Your 2004 Cadillac Seville key has 3 buttons. We verify this along with the FCC ID and key profile before we arrive to make sure the key we bring is an exact match for your vehicle. A mismatched fob is one of the most common reasons a cheap key replacement fails. Getting the specs right upfront is how we avoid problems down the line.

Question 5

Can I trust an aftermarket Cadillac key to be reliable?

Accepted Answer

It depends on the source and the model. On older Cadillacs with PK3 transponder keys, quality aftermarket blanks work fine and many locksmiths use them daily. On newer push-to-start models with BCM encryption, aftermarket smart keys are more of a gamble. One SRX owner had an Amazon aftermarket shell crack after eight months. An ATS owner reported an eBay fob that unlocked the doors but the remote start never worked right. An XT6 owner noticed shorter range on a third-party fob compared to the original. We use parts we trust because rework costs more than doing it right the first time.

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