Professional Cluster Bench Testing

Bench Test
Any Cluster
in 90 Seconds

CAN Bus + GM Class 2 J1850 VPW gauge sweep, EEPROM decoder, and odometer encoder. No $5,000 tester required.

Start Free 7-Day Trial → ▶ See It In Action
4+
Cluster Families
$49
vs $5,000+ Pro Tools
90s
To First Sweep
2
Protocols Supported
GM / Chevrolet / GMC
Ford / Lincoln / Mercury
Chrysler / Dodge / Jeep / Ram
Toyota / Lexus
CAN Bus ISO 11898
J1850 VPW Class 2
EEPROM Decode & Write
Odometer Encoder
Drive Cycle Simulation
GM / Chevrolet / GMC
Ford / Lincoln / Mercury
Chrysler / Dodge / Jeep / Ram
Toyota / Lexus
CAN Bus ISO 11898
J1850 VPW Class 2
EEPROM Decode & Write
Odometer Encoder
Drive Cycle Simulation
The Problem

Testing Clusters
Shouldn't Cost
$5,000

💸
Pro tools cost a fortune
OTC, AutoEnginuity, and Pico diagnostic bench testers run $3,000–$8,000. That kills margin for smaller shops and resellers.
🔌
No standard harness
Every cluster family uses different connectors. Building test harnesses from scratch takes hours and costs hundreds in parts.
🧩
EEPROM data is a black box
Odometer, hours, and config bytes are buried in undocumented hex. Reading and writing them requires expensive specialized equipment.
The Solution

ClusterTest Pro

Browser-based bench testing software paired with an affordable Arduino hardware kit. Everything a professional shop needs — without the $5,000 price tag.

$5,000 → $49 /month
  • Full CAN Bus gauge sweep (8 gauges)
  • GM Class 2 J1850 VPW support
  • EEPROM decoder for 4 cluster families
  • Odometer + hours encoder (write-ready hex)
  • Drive cycle simulation
  • Works in Chrome — no software install
  • Hardware kit under $75 in parts
See It Live

This Is What Your Shop
Gets On Day One

Connect your Arduino, plug in the cluster, hit Sweep. All gauges move, all lights fire, all in the browser — no install, no drivers.

app.clustertestpro.com
Protocol
CAN Bus
J1850
Vehicle
GM/CAN
Ford
Chrysler
Import
Mode
⬤ AUTO SWEEP
◯ MANUAL HOLD
◯ DRIVE CYCLE
Speed
65
MPH
RPM
2400
RPM
Coolant
195
°F
Fuel
75
%
Oil Press
45
PSI
Voltage
14.2
V
Trans Temp
160
°F
Odometer
87,432
MILES
Warning Lights
CEL
ABS
AIRBAG
BATTERY
OIL
TPMS
BRAKE
4WD
AWD
SERVICE
12:04:31CAN connected · MCP2515 · 500kbps
12:04:31Vehicle: GM/CAN · Auto Sweep active
12:04:32TX 0x120 · Speed=65mph RPM=2400
12:04:32Warning lights: CEL ABS AIRBAG BATTERY
What You Get

Every Tool A
Bench Tech Needs

⚡
CAN Bus Gauge Sweep
Full 8-gauge sweep over ISO 11898 CAN at 125k–500kbps. Speed, RPM, coolant, fuel, oil pressure, voltage, trans temp, and odometer. Auto sweep or manual hold per gauge.
All Plans
📡
GM Class 2 J1850 VPW
Full J1850 VPW protocol support for GM vehicles 1994–2003. 5 Class 2 gauges including the GM-specific cluster messages at 10.4kbps. No extra hardware needed.
All Plans
🔬
EEPROM Decoder
Paste a raw hex dump and instantly see decoded odometer, VIN, engine hours, config bytes, and checksum — with a color-coded byte map. Supports GM Delco, Ford Visteon, Chrysler, and Toyota Denso.
Pro + Shop
✏️
Odometer & Hours Encoder
Enter your target mileage, business miles, personal miles, engine hours, and idle hours. Get back write-ready hex bytes for every cluster family simultaneously. Copy to clipboard in one click.
Pro + Shop
🛣️
Drive Cycle Simulator
6-phase realistic drive cycle: cold start → idle → city → highway → decel → park. Simulates real cluster behavior over time to catch intermittent gauge and lighting faults before the cluster ships.
All Plans
📄
PDF Test Reports
Generate a dated pass/fail test report with part number, test results, gauge readings, and a QR code. Perfect for eBay listings, shop records, and proving the cluster was bench-verified before sale.
Pro + Shop
Compatibility

Works With The
Vehicles You See Every Day

Built around the highest-volume clusters in the salvage and reseller market. If you're testing American iron, you're covered.

Make / Family Years Protocol Gauges EEPROM Harness
GM / Chevy / GMC
Silverado, Sierra, Suburban, Tahoe, Yukon		 1999–2014 CANJ1850 ✓ 8 gauges ✓ Delco/Delphi ✓ In stock
Ford / Lincoln
F-150, F-250, Explorer, Expedition, Ranger		 2004–2014 CAN ✓ 8 gauges ✓ Visteon 24C16 ✓ In stock
Chrysler / Dodge / Jeep
Ram, Grand Cherokee, Durango, 300C		 2003–2012 CAN ✓ 8 gauges ✓ 93C56 ✓ In stock
Toyota / Lexus
Tacoma, Tundra, 4Runner, FJ Cruiser, GX		 2003–2015 CAN ✓ 8 gauges ✓ Denso/Yazaki Coming Soon
Honda / Acura
Civic, Accord, CR-V, Pilot, MDX, TL		 2003–2013 CAN ✓ 8 gauges — Coming Soon
GM Class 2 Legacy
Silverado, Blazer, S-10, Impala (pre-CAN)		 1994–2003 J1850 VPW ✓ 5 gauges ✓ Delco ✓ In stock
Pricing

Simple Pricing.
No Surprises.

7-day free trial on all plans. No credit card required to start. Cancel any time.

Tier 1
Hobbyist
$ 19 /month
Perfect for the DIYer, shade-tree mechanic, or occasional reseller. Everything you need to test and verify clusters at home.
  • ✓ CAN Bus gauge sweep (8 gauges)
  • ✓ GM J1850 VPW support
  • ✓ Warning light testing
  • ✓ Drive cycle simulator
  • ✓ Return-to-zero test
  • ✓ 1 device
  • 🔒 EEPROM decoder (Pro)
  • 🔒 PDF test reports (Pro)
Start Free Trial
Most Popular
Tier 2
Pro
$ 49 /month
For active resellers, mobile mechanics, and small shops. Unlimited devices plus the full EEPROM toolkit and PDF reports.
  • ✓ Everything in Hobbyist
  • ✓ EEPROM decoder (GM, Ford, Chrysler, Toyota)
  • ✓ Odometer + hours encoder
  • ✓ Business & personal mileage encoder
  • ✓ PDF test report generator
  • ✓ Unlimited devices
  • ✓ Priority email support
  • 🔒 Multi-user (Shop)
Start Free Trial →
Tier 3
Shop
$ 99 /month
For salvage yards, cluster rebuilders, and full-service shops. Multi-user access, inventory tracking, and team management built in.
  • ✓ Everything in Pro
  • ✓ Up to 5 team members
  • ✓ Inventory / lot tracking
  • ✓ Cluster fault library
  • ✓ Part number + VIN lookup
  • ✓ Custom shop branding on reports
  • ✓ Phone & email support
  • ✓ Harness discount (15% off)
Start Free Trial

Need a lifetime license? One-time hardware bundle available for $299. Questions? Contact us.

From The Community

What Real Users Say

★★★★★
"I was spending $30 on return shipping every time I sold a bad cluster. ClusterTest Pro paid for itself in the first week. The EEPROM decoder alone is worth the subscription."
MR
Mike R.
eBay reseller · 800+ feedback
★★★★★
"We run a 4-bay shop and test probably 20 clusters a month. The drive cycle mode catches things you'd never find just bench-powering the cluster the old way. Really solid tool."
JT
James T.
Owner · AutoCraft Service Center
★★★★★
"The Arduino setup took me 20 minutes to build and another 10 to get talking to the software. I tested a '06 Silverado cluster the same afternoon. Crazy that nothing like this existed before."
DK
Dave K.
Independent mechanic · 22 years
Ready To Start?

Test Your First Cluster
Today — Free

7-day free trial. Hardware kit under $75 to build. Full CAN + J1850 from day one.

Start Free Trial — No Card Required →
✓ No credit card to start
✓ Cancel any time
✓ Works in Chrome
✓ Hardware kit under $75