U1000 on Chevrolet
Manufacturer code: on Nissan and Infiniti a module saw an error on the CAN network; on older GM vehicles it is a Class 2 serial data fault
Severity: Inspect soon
Nissan and GM bulletins and dealer readouts link U1000 to no-crank or no-start, limp mode and a shifter locked in Park, so get it diagnosed soon even if the car drives normally.
It gets more serious if:
- Stop: Stop in a safe place and have the car towed if it loses power or goes into limp mode while moving, or will not stay running. Nissan owners report a Murano stuck near 20 mph with U1000.
- Stop: Stop if the brake pedal sinks or the brake warning comes on. On a 2015 Leaf, U1000 in the ABS module came with a failed intelligent brake unit.
This page covers only what differs on Chevrolet. For what U1000 means, the ranked causes and the test order, see the U1000 guide.
What's different on Chevrolet
ChevroletYour car
2015 · City Express
Supported by vehicle dataNissan-built van: crank, no start with U0100, U1000 and B2193 from a reversed EGI harness wire (GM 15169, PIT5369). Whether it is still current is not verified.
15169Status unverified
Crank, no start with U0100, U1000, B2193
2015city-express · issued · NHTSA 10090110
A reversed wire in the engine EGI harness stops spark at start-up; dealers revise the harness.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- GM 15169: 2015 City Express crank, no start with U0100, U1000, B2193
- GM PIT5369: 2015 City Express crank, no start with U0100 and U1000
- Nissan NTB15022A: NV200 crank, no start after cold soak with U1000
- GM 030845004: intermittent warning lamps, no crank, U1000 and U1016 (2001-2004 Century, Regal)
- NHTSA complaint 10150585: 2005 Nissan Murano limp mode with U1000
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error