Chevrolet U1818
G111 and/or G112 may not be properly torqued. Correction: Inspect G111 and G112 to confirm they are torqued to
Quick answer
For a 2025 Chevrolet Equinox in the US, DTC U1818 is listed in GM bulletin PIT6282/PIT6282A with a possible condition involving G111 and/or G112 not being properly torqued. The bulletin directs inspection of those points to confirm correct torque. Whether the vehicle is safe to drive or charge is not yet established by verified evidence.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does U1818 mean?
For a 2025 Chevrolet Equinox in the US, DTC U1818 is listed in GM bulletin PIT6282/PIT6282A with a possible condition involving G111 and/or G112 not being properly torqued. The bulletin directs inspection of those points to confirm correct torque. Whether the vehicle is safe to drive or charge is not yet established by verified evidence.
2. Technical explanation
The supplied official manufacturer-communication evidence identifies U1818 among several DTCs that may be present when G111 and/or G112 may not be properly torqued. The provided bulletin excerpt is truncated before the specified torque value, so the required torque specification is not established by the supplied verified evidence.
3. What system is affected?
Not yet established by verified evidence.
4. How serious is this code?
Unknown. The supplied diagnostic record lists severity as unknown.
5. Symptoms you may notice
- A clicking starter when the Start button is pressed is described in the supplied bulletin evidence.
- The supplied evidence indicates that U1818 may be present with this condition.
6. Possible causes
- GM bulletin PIT6282/PIT6282A states that G111 and/or G112 may not be properly torqued.
7. Can I still drive the vehicle?
Not yet established by verified evidence.
8. Can I charge the vehicle?
Not yet established by verified evidence.
9. What you can safely do
- Have a Chevrolet/GM service professional evaluate the vehicle using the applicable manufacturer bulletin.
- Do not attempt torque-related repairs unless performed according to manufacturer service information by qualified personnel.
10. Step-by-step troubleshooting
- Confirm whether U1818 is stored.
- Review GM bulletin PIT6282 or PIT6282A for the applicable vehicle and condition.
- Inspect G111 and G112 and confirm their torque according to the manufacturer procedure and specification. The torque value is not included in the supplied evidence.
11. When to contact service
Service is appropriate because the verified manufacturer communication provides an inspection/correction path for G111 and G112. Urgency is not yet established by verified evidence.
12. What the service center may check
- Check for U1818 and the other DTCs identified in the bulletin.
- Inspect G111 and G112.
- Confirm G111 and G112 are torqued to the manufacturer-specified value; that value is not present in the supplied evidence.
13. Possible repair or resolution
- GM bulletin PIT6282/PIT6282A directs inspection of G111 and G112 to confirm proper torque.
- Any further repair outcome is not yet established by verified evidence.
14. Affected vehicles
- Chevrolet Equinox · 2025 · US
15. Related TSBs / service bulletins
- PIT6282, NHTSA Manufacturer Communication PDF 11011192, published November 12, 2024: https://static.nhtsa.gov/odi/tsbs/2024/MC-11011192-0001.pdf
- PIT6282A, NHTSA Manufacturer Communication PDF 11011319, published November 18, 2024: https://static.nhtsa.gov/odi/tsbs/2024/MC-11011319-0001.pdf
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified official source: NHTSA-hosted GM manufacturer communications PIT6282 and PIT6282A. Applicability supplied: 2025 Chevrolet Equinox, US. https://static.nhtsa.gov/odi/tsbs/2024/MC-11011319-0001.pdf
19. Frequently asked questions
What does U1818 mean on a 2025 Chevrolet Equinox?
In the supplied GM bulletin evidence, U1818 may be present when G111 and/or G112 may not be properly torqued.
What symptom is associated with this bulletin?
The supplied bulletin excerpt describes a clicking starter when the Start button is pressed.
Is the exact torque specification available?
No. The supplied bulletin excerpt is cut off before the torque value, so it is not established by verified evidence.
Does this evidence confirm a recall?
No recall is established by the supplied verified evidence.