U1000 on Cadillac

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

This page covers only what differs on Cadillac. For what U1000 means, the ranked causes and the test order, see the U1000 guide.

What's different on Cadillac

Cadillac

  • 2004–2009 · CTS

    Supported by vehicle data

    GM PIC5460B: no crank with U1000 in Class 2 modules, from the ECM ignition feed or Class 2 wiring (also SRX). Whether it is still current is not verified.

  • PIC5460BStatus unverified

    No crank or key will not release

    2004–2009cts, srx · issued · NHTSA 10113930

    Check the ECM Ignition 1 feed and Class 2 wiring; other modules may store U0100 or U1000.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Sources and review

  1. GM PIC5460B: no crank or key will not release, 2004-2009 Cadillac CTS and SRX — General Motors / NHTSA ,
  2. Nissan NTB15022A: NV200 crank, no start after cold soak with U1000 — Nissan North America / NHTSA ,
  3. GM 15169: 2015 City Express crank, no start with U0100, U1000, B2193 — General Motors / NHTSA ,
  4. GM 030845004: intermittent warning lamps, no crank, U1000 and U1016 (2001-2004 Century, Regal) — General Motors / NHTSA ,
  5. NHTSA complaint 10150585: 2005 Nissan Murano limp mode with U1000 — NHTSA Office of Defects Investigation
Last reviewed
Written by
Saurabh K.
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