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Service bulletins for the 2015 Chevrolet City Express

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1094 on file from NHTSA, as of 2026-10-19.

About U1000 on the 2015 Chevrolet City Express: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: U1000 are shown. Show all

Bulletins, newest first
15169B2023-12-18. Service bulletin. UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR. Crank / No Start ? DTC U0100, U1000, B2193 Stored
PIT5369A2018-06-04. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL. This Preliminary Information communication provides information to the technician about vehicles that may have a crank no start issue after sitting overnight below the freezing point. Technician may find Diagnostic Trouble Code U1000. Technician will gain access to the engine harness above the fuel rail. After gaining access to the harness unsecure the harness from the retainers. Now the conduit can be opened to gain access to the wires. Technician will need to find the largest gauge red wire and violate with purple wire in the harness in sure these are the largest gauge wires. After finding the correct wires cut the violate with purple wire near the middle of the wiring that is accessible then cut the red 13mm (.50 inch) longer. Technician will need to strip both violate with purple wires sides and then the top red wire. Do not strip the bottom red wire. After the wires are stripped twist the top red wire and violate with purple wire together. Install a DuraSeal splice sleeve part number 19168447 (Blue) or equivalent to the exposed wires, using the EL-38125-10 splice sleeve crimping tool crimp in the number three nest. Technician will need to gently pull the wires to insure there is a good crimp then heat the splice sleeve with a heat gun to 500 to 700 degrees Fahrenheit. The wires will need to be taped up and placed back in the conduit. Reinstall all the parts that were removed to gain access to the harness and retest.
PIT53692017-08-15. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Preliminary Information communication provides information to the technician about vehicles that may have an engine will crank or turn over but will not start and/or once the engine is running the Service Engine Soon Malfunction Indicator Lamp will illuminate. Technician may find Diagnostic Trouble Codes U0100 and U1000 in multiple high speed modules and the Body Control Module may have B2190 or B2193 as well. Please assure the customer this concern will not cause a walk home. At this time engineering is aware of the concern and working towards a resolution.
GCUS-3-4232016-09-14. Service bulletin. ENGINE. 15169B - CUSTOMER SATISFACTION PROGRAM (REVISED SERVICE PROCEDURE). VEHICLES MAY EXHIBIT A CONDITION IN WHICH THE VEHICLE ENGINE WILL CRANK BUT NOT START. A REVERSED WIRE IN THE ENGINE EGI HARNESS CAN LEAD TO AN IGNITION SNEAK CIRCUIT, WHICH CAN PREVENT THE ENGINE CONTROL MODULE FROM COMMANDING A SPARK AT START-UP. DURING THE CRANK / NO START EVENT, A MALFUNCTION INDICATOR LAMP WILL BE ILLUMINATED, AND THE VEHICLE WILL STORE THE FOLLOWING CODE: U0100, U1000, AND B2193. DEALERS ARE TO REVISE THE ENGINE EGI HARNESS.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.