U1887 Chevrolet Code - Energy Storage Control Module Lost Communication With Starter/Generator Control Module
Quick Answer
Modules connected to the class 2 and high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module harness is open or shorted, Starter/Generator Control Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- U1887 Chevrolet indicates Energy Storage Control Module Lost Communication With Starter/Generator Control Module.
- Common causes
- Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module harness is open or shorted, Starter/Generator Control Module circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code U1887 Chevrolet Description
What are the Possible Causes of the DTC U1887 Chevrolet?
- Faulty Starter/Generator Control Module (SGCM)
- Starter/Generator Control Module harness is open or shorted
- Starter/Generator Control Module circuit poor electrical connection
- Faulty Energy Storage Control Module (ESCM)
How to Fix the DTC U1887 Chevrolet?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U1887 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about U1887 Chevrolet Code
1. What does the OBDII code U1887 mean on a Chevrolet?
U1887 indicates that the Energy Storage Control Module (ESCM) has lost communication with the Starter/Generator Control Module (SGCM).
2. What are the symptoms of the U1887 code in a Chevrolet?
Common symptoms include a check engine light, reduced performance, electrical charging issues, or the vehicle failing to start.
3. What causes the U1887 code to appear?
The code can be triggered by faulty wiring, damaged connectors, a malfunctioning ESCM, a failed SGCM, or issues with the communication network.
4. Can I drive my Chevrolet with the U1887 code?
Driving may be possible, but it’s not recommended as this code can indicate charging or performance issues that may worsen over time.
5. How do I diagnose the U1887 code on my Chevrolet?
Start by inspecting the wiring and connectors between the ESCM and SGCM, checking for damage, corrosion, or loose connections. Next, verify the functionality of both modules using a diagnostic scan tool.
6. What repairs can fix the U1887 code?
Repairs may include replacing damaged wires or connectors, reprogramming or replacing the ESCM or SGCM, or addressing any faults in the communication network.
7. How much does it cost to repair a U1887 code on a Chevrolet?
Repair costs vary but can range from $100 for minor wiring repairs to $1,000 or more if a module replacement is required.
8. How do I prevent the U1887 code from returning?
Ensure regular maintenance of electrical systems, protect wiring from physical damage, and address any warning signs of electrical issues promptly.
9. Does the U1887 code always mean a module failure?
No, the code is often caused by wiring or communication issues rather than a complete module failure.
10. Can a software update fix the U1887 code in a Chevrolet?
In some cases, updating the ESCM or SGCM software may resolve communication errors, but this depends on the specific cause of the code.
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