Question 1

Are you licensed and insured to work on Cadillac vehicles?

Accepted Answer

Yes. EZ Car Keyz holds a California BSIS locksmith license, LCO#6792, and carries full liability insurance. For a late-model Cadillac like the CT5, that matters more than it sounds. The vehicle's security system requires a registered professional with proper access to manufacturer security data to program a replacement key. Not every locksmith carries that access, and without it, the job either can't be completed or gets done wrong and causes more problems down the line. When you call, ask any locksmith directly whether they have current GM coverage for smart key programming. If they hedge, that's your answer.

Question 2

How do I know you're not a scam locksmith?

Accepted Answer

The pattern with scam locksmiths is pretty consistent. They quote a low number on the phone, show up, and then invent a reason the job is more complicated than expected. Cadillac owners get hit with the luxury angle specifically, the idea that a nicer car automatically means a higher bill, with no real explanation of what changed. Red flags: no specific quote over the phone, no verifiable business name, no reviews you can actually read.

We give you a real estimate for your specific vehicle before anyone drives out. The business name is EZ Car Keyz, the license is public record, and we have over 100,000 followers across YouTube and TikTok where you can watch the actual work being done. That's a lot harder to fake than a phone quote.

Question 3

Will the replacement key work exactly like the original?

Accepted Answer

Yes. Once the replacement fob is enrolled in your CT5's security system, it behaves the same as the factory key. The vehicle recognizes it, the engine starts, and the remote functions operate normally. Before I leave any job, I walk through every button and confirm the vehicle responds correctly. That on-site verification matters because I've heard from owners who bought fobs online that appeared to program but had one function that never worked right. That's not something you want to find out later in a parking lot. Everything gets tested before I hand it over.

Question 4

I bought a replacement fob online for my CT5. Can you just program it, or do I need to buy one from you?

Accepted Answer

Bring it and I'll take a look. The short version: it depends on what you bought. The CT5 uses a specific fob tied to the factory FCC ID for this vehicle, and not every aftermarket or used fob sold online is actually compatible, even if the listing says it is. Some work fine once programmed. Others have mismatched hardware under the shell and won't enroll no matter what tool you use. If the fob you have is the correct one for the CT5 and it's a new unregistered unit, there's a real chance we can use it. If it's a used fob that was previously paired to another vehicle, that adds a step. I'd rather you call first and describe what you have than show up and find out the fob isn't going to work.

Question 5

My CT5 starts fine but the remote lock and unlock stopped working. Is the key going bad?

Accepted Answer

Not necessarily. If the vehicle still recognizes the fob for starting, the transponder side is working. Remote functions like lock and unlock run on the RF signal from the fob, which is a separate circuit. A weak CR2450 can kill the RF range before it affects the start function, so that's the first thing to swap. Beyond the battery, interference sources like parking structures, certain aftermarket accessories, or even a damaged fob antenna can cause exactly this symptom. If a fresh battery doesn't bring the remote functions back, that's worth a closer look at the fob itself and how the vehicle is receiving the signal.

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