Services

Transmission Replacement at Johnny's Automotive

When a transmission is past repairing, you get a straight comparison of remanufactured and used, what a proper install includes, and a decision made with you.

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ASE Certified TechniciansFlexible Drop-Off Hours20+ Years

Recent Transmission Replacement work across our shops

Haines City
Car Won't Move in Drive or Reverse: What Fixed It?
The technician performed an automatic transmission assembly remove and install at our Haines City shop, fitting a new OEM transmission.
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Haines City
Why Is My Check Engine Light Indicating Transmission Issues?
The vehicle's transmission was successfully replaced, resolving the check engine light issue.
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Wauchula
Shift Shudder Starting at 85,000 Miles
The vehicle was serviced to address the shift shudder, and the owner was informed about the potential break-in period.
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Is my transmission worth repairing, or does it need to be replaced?

Some transmission failures are repairable and some are not, and the honest work is finding out which one you have before you spend money. A solenoid, a valve body, a leaking seal, or a broken mount is a repair. Metal debris packed into the pan, a burnt clutch pack, a failed pump, or damaged hard parts is a different conversation, because failures like those have already put contamination through the rest of the unit.

When a transmission is genuinely finished, you have two honest paths and they carry different risk. A remanufactured unit has been torn down, machined, and rebuilt to a specification with new wear parts, and it comes with coverage from the builder. A used unit came out of another vehicle with a history nobody can fully verify, and it usually carries much shorter coverage. Remanufactured costs more and lowers your risk. Used costs less and raises it. What tips the decision is usually not the car, it's your plan for it. Two more years of driving and a used unit can be exactly right. Ten more years and it rarely is.

A proper installation is more than swapping the unit. Whatever contaminated the old fluid is still sitting in the cooler and the lines, so those get flushed or replaced or the new transmission inherits the debris. Mounts get inspected, because a broken one lets the driveline move in ways it was never meant to. The unit gets the exact fluid it specifies and the correct fill procedure, and most modern vehicles need the control module programmed or relearned so the engine and transmission agree on what they're doing.

We show you what failed. If the pan came out full of clutch material, you should get to look at it yourself rather than take our word for the largest repair bill on the vehicle. Our labor on a job this size carries a 36 month, 36,000 mile nationwide warranty.

Last updated October 2026

Our Transmission Replacement Work

Real transmission replacement projects completed by our team

Transmission on a transmission jack under a vehicle at Johnny's Automotive

Why us

Why choose Johnny's Automotive for transmission replacement

We are your trusted partner for all transmission replacement needs.

We prove the unit is done before you buy one

Nobody should spend replacement money on a guess. We test and inspect first, and if the failure turns out to be a component we can repair, that's the quote you get instead.

Remanufactured and used, laid out as a risk decision

You get the real tradeoff in plain terms, including what coverage each option carries and how it fits how long you plan to keep the vehicle. We won't push you to the expensive path or the cheap one.

The install includes what killed the last one

Cooler and lines cleared, mounts inspected, correct fluid, correct fill procedure, and the programming the vehicle requires. We go through exactly what's in the quote before any work starts.

Reviews

What customers say about our transmission replacement work

Johnny's was great they kept me informed of the transmission replacement every step of the way. I would recommend them to anyone needing car repairs.

Gregory Grams

3 weeks ago

Verified Google Review

I was originally quoted $6–9k by my dealership for a full transmission replacement or told to consider buying a new car. I decided to get a second opinion and called Johnny’s, and I’m so glad I did. Instead of jumping straight to the most expensive option, they were willing to try servicing the transmission first—and it worked. I ended up spending far less than expected. Friendly, honest, and genuinely looking out for their customers. Highly recommend.

Breanna Robbins

6 months ago

Verified Google Review

I can’t say enough great things about Johnny’s. My transmission went out while I was passing through Haines City… i’m not from there so I picked the auto shop with the best reviews, and I’m glad I did!! Rebecca, Mike and the entire team were communicative, honest, respectful, empathetic and went above and beyond for me. They handled my entire warranty claim themselves, and all I had to do was wait. Upon pickup the car was not only repaired but washed and spiffed up, and they left a rose on the dash for my mom and myself!!! It’s the “first date treatment” of repair shops! Lol. Thank you guys….i am so appreciative:-)

swineland Wineland

2 years ago

Verified Google Review

FAQ

Transmission Replacement questions, answered

Common questions about our transmission replacement.

How do you decide a transmission is past repairing?

By what we can see and measure, not by how bad it sounds. Pressure testing, fluid and pan condition, stored data, and what the vehicle actually does under load tell us whether a component fix has a real chance. If it does, we'll offer it, because it's the smaller bill.

Remanufactured or used, which one should I pick?

Start with how long you intend to keep the vehicle and what the rest of it looks like. Remanufactured is the lower risk option at a higher price, used is the reverse, and both are legitimate depending on your plan. We lay out what each one includes and you choose.

Why does the cooler have to be flushed?

Because debris from the failure is sitting in the cooler and the lines, and new fluid will carry it straight into the new unit. Flushing or replacing those parts is not an add-on, it's part of doing the job in a way that lasts.

Does a replacement transmission need to be programmed?

On most modern vehicles, yes. The control module has adaptive settings learned from the old unit, and those have to be reset or the new transmission gets driven by the wrong instructions. Some vehicles also need the module coded to the new unit before it will shift correctly.

Can I keep driving it until you can get it in?

Usually we'd rather you didn't. Driving a failing transmission spreads debris and can turn a repairable unit into a replacement. Tell us what it's doing and we'll give you a straight answer, and if it needs a tow we'll say that instead of hoping it makes the trip.

Where we work