Product · Transmission shop management software

Diagnosis first. The transmission shop runs on the case.

BayStacker is transmission shop management software that carries a unit from the initial complaint and VIN decode to the teardown build sheet, core credit and invoice. Eight modules work the record in the order the shop works the car.

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The diagnosis

The case comes before the work order.

01Diagnosis case · Analysis A

A ranked hypothesis, held as a draft.

The complaint, the decoded VIN and the codes go on one case. Analysis A ranks the likely cause against the transmission family, shows the inputs it used and names the evidence still missing.

Analysis A waits for a decoded VIN
Confidence and missing evidence on the same screen
A person confirms the conclusion, not the model

Diagnosis case · RO-24017

2021 Ford F-150 · 10R80

VIN 1FTFW1E59MFB38206

Analysis A · Draft

Complaint

Symptom: Transmission shudder
Conditions: 35–50 mph · Warm · Light throttle
Frequency: Intermittent
Codes: P0741 · P07F7

VehicleVIN decoded

Family: Ford 10R80 (10-Speed SelectShift)

Analysis A

Torque converter clutch slip / valve body hydraulic instability

Confidence72%

Still unproven: Pan inspection photos · Line pressure capture

“Ranked, with its inputs, and still a draft.”BayStacker’s own components, showing the records of its certification test shop — not a customer’s data. Repair-order, VIN and part numbers are illustrative.

02Evidence ladder

A conclusion shows what it rests on.

Symptom, observed behaviour, codes and root cause each read Recorded or a dash. Every input under the conclusion says who recorded it, and the confidence names its basis.

Scan, road test, fluid and pan photo attach to the case
A thin case never reads as finished

Evidence · RO-24018

2020 Chevrolet Silverado 1500 · 8L90

Evidence ladder

Symptom: Recorded
Observed behaviour: Recorded
Codes: Recorded
Root cause: Recorded

Inputs

TCC slip is present during the warm road test.PersonP0741 · P0796

Pan inspection: clutch material and valve-body wear documented before teardown.PersonPan photo

Root cause

Worn torque converter clutch and hydraulic instability in the valve body.

Conclusion: Confirmed
Confidence: 91%

“Nothing on the ladder is checked until it is recorded.”

The job

Then the work moves, and every hold is on the record.

03Work-order board

The hold is on the row.

Each open repair order with its phase and its state. A part the shop marked blocking turns the row to Waiting on parts, so the hold is read, not remembered.

State comes from the record, not a typed status
Time in phase on every row

RO	Vehicle	Phase	State	In phase
RO-24017	2021 Ford F-150	Test Validation	Waiting on parts	—
RO-24018	2020 Chevrolet Silverado 1500	Build	Waiting on parts	—

“Where each repair is, and what is holding it.”— Work orders

04Parts requests · inspector

Where the part stands, not where it was ordered.

A parts request opens in the inspector: requested, allocated and installed as three counts, the purchase order and its status, the landed cost and how it is charged.

Requests and purchase orders on the record; ordering happens at the supplier
A blocking part holds the repair on the board

“Allocated is not installed.”— Parts request · RO-24017

05Build sheet · unit and core

The build is a record. The core is a debt.

The build sheet names the failure mode, each component’s work and torque, the fluid and the hours against plan. The unit carries its torque converter, valve body and case core until the vendor’s credit lands.

A build record with each measurement
Converter, valve body and case cores tracked until credit lands

Build sheet · RO-24018

2020 Chevrolet Silverado 1500 · 8L90

TCC slip / valve-body pressure loss

Component	Work	Torque
Torque converter	Replaced	42 lb-ft
Valve body	Rebuilt	105 in-lb
Pump	Machined	18 lb-ft

Fluid: DEXRON ULV · 10.5 qt
Hours: 5.25 of 12.5 h planned

Unit · RO-24017

2021 Ford F-150 · 10R80

VIN 1FTFW1E59MFB38206

Unit

Transmission: Ford 10R80 (10-Speed SelectShift)
Repair route: Rebuild in house
Planned labour: 12.5 h
Plan total: $2,800.00

CoreLogged

Core: CORE-0412
Status: Pending return
Condition: Good
Value: $350.00
Returns to: Certification Transmission Supply

“A returned core is not money until the credit lands.”

The money

The invoice waits for proof.

06Verification · QC gate

The repair is proven before it is billed.

A road test and a code recheck prove the repair. On a diagnosis-managed job, the invoice, delivery and closeout stay locked until verification passes.

The gate opens on passed or waived, nothing else
A supplement waits for sign-off before the build goes on

Work order · RO-24018

2020 Chevrolet Silverado 1500 · 8L90

Build

Diagnosis
Root cause confirmed
Supplement
$450.00 · Pending
Build
5.25 of 12.5 h
Verification
Road test · Code recheck
Invoice
—

“The invoice waits for verification, and verification waits for the build.”

07Invoice · customer links

The invoice opens after QC. The customer’s link does one thing.

Until verification passes, the Money tab offers no invoice, showing Locked: QC required. The estimate goes to the customer as a link that approves that estimate and nothing else.

Payments are recorded on the invoice, not processed

Money · RO-24018

2020 Chevrolet Silverado 1500 · 8L90

Build

Invoice

Not invoiced yetLocked — QC required.

The invoice form appears after verification passes.

“Locked — QC required.”— Money tab

Estimate · RO-24017

2021 Ford F-150 · 10R80

sent

Subtotal: $2,800.00
Tax: $231.00
Total: $3,031.00

The customer’s approval link — opening it is their decision:baystacker.com/approve/:token

“The link approves this estimate, and nothing else.”— Estimate

08Reports

Reports that start from the job.

Rebuild verification, QC bottlenecks, comebacks by transmission family, core aging: each report is defined in one line and read from the records the floor works.

Grouped in the order each job reads them
The shop’s ledger, including chart of accounts, payables and payment reconciliation, beside them

Jobs on the floor

Sign in to open Rebuild verificationRoad-test failures by transmission family over the last 90 days.Sign in to open QC bottlenecksQC gates waiting for sign-off, and road tests that failed.Sign in to open WIP by transmission familyActive vehicles in the shop, grouped by transmission family.

Comebacks and rework

Sign in to open Warranty and comebackComeback and warranty rework cost by transmission family.Sign in to open Repeated repair stepsThe same repair step completed more than once on one job.

Parts and purchasing

Sign in to open Core agingUnrecovered core value stays open until credit reconciliation.Sign in to open Purchase orders awaiting actionOpen purchase orders and what each one is waiting on.

“Each report, and the one line that defines it.”— Reports, three of its groups

See it on a job that already came back.

A walkthrough runs Analysis A on the shop’s own last rework. Nothing to install and nothing to migrate to look at it.

Request a walkthrough One repair, start to finish