2018 Chevrolet Sonic
Key Replacement - Save vs Dealer in Ventura County
OEM Quality | Fraction of the Dealer Price

Dealerships charge a premium because they can. We don't. Same key, same programming, same quality - just without the markup. Call for an honest quote with no hidden fees.

Best price on car keys, guaranteed
2018 Chevrolet Sonic
Key Options
Dealer-grade key for a fair, honest price
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2018 Chevrolet Sonic Smart Key Replacement - Fast, Affordable & Professional
Got a call from a guy near the Pleasant Valley Historical Museum in Camarillo. He was sitting in his 2018 Sonic in a parking lot, dash reading "No Remote Detected," engine not turning over. He said the push button just blinked at him and did nothing.
He had already tried holding the fob against the start button, which is the backup move GM describes in the owner's manual. Nothing. Tried his second fob. Same thing.
That told me it probably was not the fobs. Both dead at once is almost never coincidence.
I drove out and pulled codes through the OBD port. The body control module, part number 42359434 on these second-gen Sonics, had lost its key authorization data. Both fobs were physically fine, batteries good, buttons responsive. The BCM just stopped recognizing them.
I ran a full key relearn through the security access protocol. GM's system requires a timed security handshake before it lets you write new key data, about 12 minutes of waiting while the tool and the BCM talk back and forth. Registered both his original HYQ4AA fobs back to the car one after the other.
He sat on a bench near the museum the whole time. When I told him it was done, he walked over, hit the start button, and the Sonic fired right up. No tow, no dealer visit, no week without his car. Just a guy who got his lunch break back.
Save vs the Dealer on Your Chevrolet Sonic Key
Get your key for hundreds less than the dealer. Same quality, same result, better price.
Chevrolet Sonic Rapid Response, Done Right
Rapid response in the field
Real Reviews, Real Savings
See why drivers choose us over the dealer
“Tim went above and beyond. I struggled all day trying to program a new FOB and nothing worked. Tim helped me patiently, even recommending cheaper options since I was on a tight budget. He eventually came all the way to Ojai late at night and fixed everything.”
“My key fob stopped working while I was at Oxnard Harbor and I thought I was going to need a tow. EZ Car Keyz showed up fast, programmed a new fob, checked everything carefully, and made sure the car was fully functional before leaving.”
“Needed a spare car key made and chose EZ Car Keyz based on their reviews. The reviews were right. They gave me the best price, responded quickly to all my questions, came to my workplace, cut the keys on site, and finished fast.”
Chevrolet Sonic Key Service Areas
Fair pricing in every city we serve

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