Specialist · Transmission & gearbox
Gearbox Repair & DSG Cloning.
Transmissions are the most commonly mis-diagnosed component on modern cars. We handle the full stack: TCU cloning, mechanical repair, full replacement — manual, automatic, DCT and VAG DSG.
What's covered
4 services
01 / 04
Gearbox & DSG cloning
Mirror a working TCU into a replacement unit — VAG DSG, automatic and DCT transmissions covered.
02 / 04
Gearbox repair
Mechatronic, valve-body, clutch-pack and selector work.
03 / 04
Transmission repair
Internal repair on automatic, manual and dual-clutch transmissions.
04 / 04
Transmission replacement
Full transmission swap with TCU coding and adaptation.
Frequently asked
Common questions, plain answers.
01What's TCU / gearbox cloning and when is it needed?
Cloning copies the data from an existing TCU (transmission control unit) into a replacement unit, so the new gearbox 'remembers' the adaptations and pairings of the old one. It avoids re-coding and re-pairing, and it's often faster and cheaper than a fresh TCU programming session.
02My DSG is jerky / juddering — does it need replacing?
Usually no. Jerky DSGs are most often a worn mechatronic unit, low or contaminated fluid, or adaptations that have drifted out of spec. We diagnose first and only replace components that genuinely need it.
03Do you supply the gearbox or do I need to source one?
Either works. We'll source a quality used or rebuilt unit if you prefer, or fit one you've supplied. Either way, all fitting work is backed by our written guarantee.
04How long does a transmission replacement take?
Most replacements are a 1-2 day job depending on vehicle. TCU cloning and adaptations add a few hours. We confirm exact timing in the written quote.
Also at Proline
Other work, same garage.
ECU coding & diagnostics
ECU cloning, programming and module coding for VAG, BMW, Mercedes and Land Rover. Engine diagnostics with dealer-level kit.
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DPF, EGR & AdBlue
Software and hardware solutions for diesel emissions systems — DPF blockages, EGR faults, AdBlue countdowns.
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Airbag crash data reset
SRS / airbag module crash data reset on 99% of modules — without replacing the unit.
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Ready to book transmission & gearbox?
Send us your reg and we'll come back with a written quote. No obligation, no pressure — just a clear price before any work starts.