B1370moderate severityBody
Ignition 3 Circuit Fault
on 2005 GMC Canyon 3.5L I5 · 4WD
What this code means
The module detected a fault on the ignition 3 switched power circuit. Typically due to a bad ignition switch or wiring issue on that circuit.
Symptoms
- No-start or intermittent start
- Accessories not powering
- Warning lights on
Common causes
- Faulty ignition switch
- Blown fuse or relay
- Wiring open or short
- Corroded connector
Diagnostic steps
- Check ignition 3 fuse and relay
- Verify voltage at circuit in run position
- Inspect ignition switch operation
- Repair wiring or replace switch
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0007
Rear Left Side Airbag Deployment Circuit
B0008
Rear Right Side Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open