Real diagnostics. Real guidance. Real repairs.

Master Tech in your pocket.

Diagnose warning lights, troubleshoot problems, review repair estimates, plan repairs, and build with confidence from daily drivers and work trucks to classics and performance cars.

Open My Garage Start a Diagnosis

Educational decision support. Always verify repairs with factory service information or a qualified technician.

Evidence-based assessment Guided repair verification Estimate and build checks

Start where the money risk is

Three ways into the app.

Each path is built around the moment when a car owner usually needs help most.

Repair Work through symptoms before replacing parts. Safety flags, likely diagnostic paths, DIY/shop boundaries, and next tests. Estimate Review Paste your estimate text before approving work. Preview missing proof, vague labor, repeated charges, and questions for the shop. Build Planning Model the cost, stress, and regret risk of the build. Compare power goals against budget, drivetrain stress, support mods, and usage.

Support clarity

Built for everyday problems and serious builds.

Gearhead Guide supports daily drivers, trucks, SUVs, common American platforms, and performance cars. Corvette support remains the deepest launch library, while every report shows platform support and confidence so the guidance stays honest when vehicle-specific detail is limited.

Full Support: C7 Corvette 2014-2019 Stingray, Grand Sport, Z06, and 2019 ZR1 upgrade planning, repair triage, and estimate review.
Core Support: C5 Corvette
C6 Corvette Launch-core Corvette guidance for repair triage, estimate review, and conservative planning previews.
Strong General Support: LS-based GM vehicles
Camaro
Mustang
Charger / Challenger
Silverado / Sierra performance builds
Other common American performance platforms Strong general guidance is active now for common American performance combinations. Deeper platform-specific modeling continues to expand.
General Guidance: Trucks
Daily drivers
General repair triage
Shop estimate review
Basic upgrade planning Use the guided workflows for repair triage, estimate review, and conservative upgrade planning when platform-specific depth is limited.
Limited Guidance: Rare platforms
Missing year/make/model/engine details
Highly specialized systems The app stays conservative, asks for missing details, and avoids pretending it has platform-specific certainty.

What Founder Access unlocks

Free helps users see the risk. Founder Access helps them act on it.

Free

Good for a first-pass check before you spend.

  • Basic repair triage
  • Basic upgrade planning
  • Conservative safety and cost warnings
  • Preview-level estimate review
Founder Access - $19.99 one-time launch offer

Built for users who want deeper planning before approving parts or labor.

  • Deeper estimate review
  • Shop-ready questions before approval
  • Support-mod checklists
  • Upgrade risk notes
  • Repair handoff summaries
  • Early access to new tools as they ship

Launch offer

Founder Access is a one-time $19.99 launch offer.

Founder Access is an early launch offer while deeper tools continue shipping.

Honest fit

Who this is for, and who this is not for.

Who this is for
  • Performance-car owners planning repairs or upgrades
  • Owners reviewing shop estimates
  • Owners trying to avoid random parts guessing
  • DIY-minded owners who still want safer decision support
Who this is not for
  • Emergency safety repairs
  • Replacing factory service manuals
  • Legal emissions advice
  • Guaranteed diagnosis without inspection
  • Replacing a qualified technician

Example output

Example Decision Snapshot

Example Decision Snapshot Verify the proof before approving parts or labor.
Risk Level Medium
Platform Support Strong General Support
Confidence Medium
Next Best Move Verify the diagnostic proof before approving parts or labor.
First Checks

Ask for test results, parts/labor breakdown, and warranty terms.

What Not To Do Yet

Do not approve the full repair until the failure is verified.

Install Web App

Use Gearhead Guide Like a Phone App

Add it to your home screen for quick access from your phone.

iPhone Safari -> Share -> Add to Home Screen
Android Chrome -> Install Web App or Add to Home Screen
GG
Gearhead Guide No vehicle selected
Saved Account

Guidance for repairs, estimates, and builds.

Catch Costly Mistakes Before You Buy Parts Or Approve Work

Intake

Garage Command Center

Start with the vehicle, then move one job forward.

Gearhead Guide keeps the assessment, next step, and saved vehicle context in one focused workspace.

Platform confidence note

Daily-driver practical and performance-capable. Reports show platform support and confidence levels.

Visual Diagnostics

Visual Check
Secondary tools Advanced / Legacy Tools Use this only if you prefer the older open layout. The guided workflows are recommended for the best report.

Advanced / Legacy Tools

Use this only if you prefer the older open layout.

The guided workflows above are recommended for the best report. These older tools remain available for quick repair concerns, build ideas, pasted shop estimates, and platform selection.

Free Guided first pass with conservative risk warnings.
Founder Quote review, estimate checks, and shop-ready reports.
Launch $19.99 one-time early access while deeper tools ship.
Choose the vehicle platform Support level is shown clearly so the guidance stays honest.
No vehicle selected: General Guidance.

Choose a vehicle or enter its year, make, and model before relying on platform-specific guidance. No Corvette generation is assumed on a fresh device.

Guidance is educational and conservative. Cost ranges are planning estimates last reviewed July 2026, not guaranteed live quotes. Verify service procedures, lift points, torque specs, fluids, emissions rules, part pricing, labor rates, and safety-critical work with factory service information or a qualified technician.