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Chevrolet P20EE

The technician should follow SI diagnostics. If no cause for the concern is found or during diagnosis a leak check is required, power smoke diagnostic leakdetector GE-52250 ca

DriveNot yet established by verified evidence. The bulletin notes that intermittent reduced engine power may occur.
ChargeNot yet established by verified evidence.
ServiceContact a Chevrolet/GM service provider for diagnosis according to SI. This is especially appropriate if reduced engine power is present.
Confidence95%

Quick answer

For the supplied Chevrolet evidence, P20EE appears in GM bulletin PIP5684/PIP5684A/B/C as one of several possible current or history DTCs. The bulletin directs technicians to follow GM Service Information (SI) diagnostics; if no cause is found or a leak check is needed, it specifies use of the GE-52250 Power Smoke Diagnostic Leak Detector.

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 P20EE mean?

For the supplied Chevrolet evidence, P20EE appears in GM bulletin PIP5684/PIP5684A/B/C as one of several possible current or history DTCs. The bulletin directs technicians to follow GM Service Information (SI) diagnostics; if no cause is found or a leak check is needed, it specifies use of the GE-52250 Power Smoke Diagnostic Leak Detector.

2. Technical explanation

The verified bulletin evidence does not provide a conventional code definition for P20EE. Its supplied canonical wording is a service-direction excerpt rather than a fault definition. In the bulletin context, P20EE may be present with other DTCs where the vehicle may have intermittent reduced engine power. The bulletin states that the concern may be due to a leak in the charge-air-cooler/induction system. This is bulletin-context evidence, not proof that such a leak is the cause on every vehicle with P20EE.

3. What system is affected?

The supplied official bulletin identifies the charge-air-cooler/induction system as the system involved in its described diagnostic scenario. No EV high-voltage system involvement is established by the verified evidence.

4. How serious is this code?

Not yet established by verified evidence. The bulletin describes intermittent reduced engine power in its diagnostic scenario.

5. Symptoms you may notice

  • Intermittent reduced engine power may occur in the bulletin’s described scenario.
  • P20EE may be stored as a current or history DTC, potentially with other listed DTCs.

6. Possible causes

  • A leak in the charge-air-cooler/induction system may cause the bulletin-described concern.
  • Not yet established by verified evidence whether this is the cause of P20EE on a particular vehicle.

7. Can I still drive the vehicle?

Not yet established by verified evidence. The bulletin notes that intermittent reduced engine power may occur.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Arrange diagnosis using the applicable Chevrolet/GM Service Information procedure.
  • Do not attempt a smoke-leak test or system repair unless performed by qualified personnel using the specified diagnostic process.

10. Step-by-step troubleshooting

  1. Follow applicable GM Service Information (SI) diagnostics.
  2. If no cause is found, or if diagnosis requires a leak check, the bulletin specifies the GE-52250 Power Smoke Diagnostic Leak Detector.

11. When to contact service

Contact a Chevrolet/GM service provider for diagnosis according to SI. This is especially appropriate if reduced engine power is present.

12. What the service center may check

  • Retrieve and evaluate current and history DTCs using applicable GM SI diagnostics.
  • Diagnose the concern using GM SI procedures.
  • When required by diagnosis, perform a leak check using the GE-52250 Power Smoke Diagnostic Leak Detector.

13. Possible repair or resolution

  • No specific repair is established by the verified evidence. Repair depends on the cause identified through SI diagnostics.
  • If a charge-air-cooler/induction-system leak is identified, the appropriate resolution is not specified in the supplied evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • GM PIP5684, published October 22, 2019; NHTSA manufacturer communication MC-10167455: https://static.nhtsa.gov/odi/tsbs/2019/MC-10167455-9999.pdf
  • GM PIP5684A, published May 5, 2020; NHTSA manufacturer communication MC-10176300: https://static.nhtsa.gov/odi/tsbs/2020/MC-10176300-9999.pdf
  • GM PIP5684B, published July 13, 2020; NHTSA manufacturer communication MC-10178370: https://static.nhtsa.gov/odi/tsbs/2020/MC-10178370-9999.pdf
  • GM PIP5684C, published October 22, 2020; NHTSA manufacturer communication MC-10182564: https://static.nhtsa.gov/odi/tsbs/2020/MC-10182564-9999.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified source: NHTSA-hosted GM manufacturer communications PIP5684 through PIP5684C. The supplied evidence associates P20EE with a charge-air-cooler/induction leak diagnostic scenario and directs use of GM SI diagnostics.

19. Frequently asked questions

What does the verified Chevrolet evidence say to do for P20EE?

Follow GM Service Information diagnostics. If no cause is found or a leak check is required during diagnosis, use the GE-52250 Power Smoke Diagnostic Leak Detector.

Does P20EE prove there is an induction-system leak?

No. The bulletin says a charge-air-cooler/induction-system leak may cause its described concern; it does not establish that a leak is present on every vehicle with P20EE.

Is P20EE an EV high-voltage battery or charging fault in the supplied evidence?

Not yet established by verified evidence. The supplied bulletin instead discusses a charge-air-cooler/induction diagnostic scenario.

Which Chevrolet vehicles are listed in the supplied applicability data?

Chevrolet Bolt EV, Spark, and Volt, model years 2011 through 2018 in the US. The supplied bulletin evidence itself does not establish exact model-year applicability beyond the provided applicability records.

20. Sources & verification

ReferenceVerified
Chevrolet P20EE: The technician should follow SI diagnostics. If no… | EV Diagnostics