2000 Pontiac Montana
Key Replacement - Save vs Dealer in San Diego

Q: How much more does all-keys-lost cost compared to just adding a spare?

More, always. When you still have a working key for your Montana, adding a spare is the simpler version of the job. When every key is gone, the immobilizer needs a full reset and the new key has to be enrolled from scratch. That takes longer and the process is more involved. The practical advice: if you're reading this and you still have one working key, get a spare made now.

Q: Do aftermarket transponder keys actually work on a 2000 Montana?

Some do, some don't. The chip quality and shell tolerances in aftermarket blanks vary a lot, and on an older GM immobilizer system like this one, a marginal chip can cause intermittent starts or a flat refusal to program. I've seen people spend money on a cheap blank online and then need it replaced anyway. I use blanks verified to work with this vehicle's security system, and I test before I leave.

Q: The engine starts but immediately stalls on my 2000 Montana. Is that the transponder?

That pattern, starts and immediately dies, is a classic sign that the vehicle's security system isn't recognizing the key. On the 2000 Montana you'll often see the security light stay on solid or flash during this. It means the immobilizer didn't get a valid signal from the transponder chip, so it cuts the fuel after that brief start.

Q: Can I program a replacement transponder key myself on a 2000 Pontiac Montana?

On some older GM vehicles there's an onboard relearn sequence you can run yourself if you already have two working programmed keys. The 2000 Montana does have an onboard procedure that requires two existing programmed keys to add a third. If you don't have two working keys, that door is closed and you need a tech with programming equipment. Most people calling me are already past the point where the self-relearn helps, because they're down to one key or none.

All Keys Lost? | No Problem

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Transponder Key

Whether you lost your only key, it was stolen, or it just stopped working, we handle it. No existing key needed. Our technicians program new keys directly to your vehicle's computer.

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We make new keys from scratch - no existing key needed

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2000 Pontiac Montana
Key Options

Dealer-grade key for a fair, honest price

Transponder Key

All Pontiac Montana Keys Lost? Compare Options

Lost all your keys? Compare your options

EZ Car Keyz

Dealership

Average Cost

✓ $$

✕ $$$$

Location

✓ We come to you

✕ You drive there

Wait Time

✓ 20-45 min

✕ 2-5 days

Same-Day

✓ Yes

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All Keys Lost

✓ No problem

✕ Tow required

OEM Quality

✓ Yes

EZ Car Keyz wins 5 out of 6

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2000 Pontiac Montana Transponder Key Replacement - Fast, Affordable & Professional

A woman in Bostonia called me on a Tuesday afternoon. Her 2000 Pontiac Montana was sitting in the driveway and she had exactly one key left, and that key had snapped at the base of the blade inside the ignition. The bow was in her hand. The rest was stuck in the cylinder.

She had already called the dealer. They told her the van needed to be towed in, they'd have to order the blank, and she was looking at several days minimum. She had two kids and a full week ahead of her. That wasn't going to work.

I pulled up, extracted what was left of the broken key from the ignition without damaging the cylinder, decoded the lock, and cut a new transponder key on site. Then I connected to the OBD port and programmed the transponder to the immobilizer. The whole thing took just under 40 minutes.

The moment she turned the key and it held, no stall, no security light, just a running van sitting in her driveway in Bostonia, she looked genuinely surprised at how undramatic it was. She asked if that was really it.

That was really it. No tow, no waiting on parts, no multi-day shop visit. She mentioned what the dealer had quoted. I just nodded. The difference was noticeable.

Save vs the Dealer on Your Pontiac Montana Key

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2000 Pontiac Montana

Transponder Key | Rescue Key

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Pontiac Owners Rescued and Reviewed

From lost keys to happy customers

C

Christine A.

Sep 2026

★★★★★

“Awesome! Thanks so much for coming out on such short notice on a holiday! Appreciate you!”

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Marta F.

Aug 2026

★★★★★

“Great service! Good prices and quick work, I Lost My car keys in a store and after looking for a long time we decide to call a locksmith and round this one, great option.”

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Senojean C.

Dec 2025

★★★★★

“Thank you for the fast and professional service I appreciate the car opening. Great service and nice tech.”

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Emergency 2000 Pontiac Montana key replacement review - EZ Car Keyz El Cajon CA

★ 5.0 out of 5 - Based on Over 200 five-star Google reviews

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Pontiac Montana Mobile Service FAQ

Real costs, no dealer surprises

What is the cheapest way to replace my 2000 Pontiac Montana key?▼

Call a mobile locksmith before you call the dealer or arrange a tow. The dealer route on a transponder key like this one involves ordering the blank through their parts department, scheduling a service appointment, and in an all-keys-lost situation, getting the van there in the first place. That adds up in time and money fast. With EZ Car Keyz, I come to you in El Cajon, cut the key on site, and program the transponder before I leave.