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Makes 🢒 Chevrolet 🢒 2009 🢒 Corvette 🢒 Bulletins 🢒 PQC Part Restriction - Corvette ZR1 Generator P/N 25888947 - keywords alternator charging LS9 order parts volt

PQC Part Restriction - Corvette ZR1 Generator P/N 25888947 - keywords alternator charging LS9 order parts volt

Subject:PQC Part Restriction - Corvette ZR1 Generator P/N 25888947

Models:2009 Chevrolet Corvette ZR1
with 6.2L Supercharged V8 (RPO LS9)


The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

As part of our ongoing quality improvement efforts, the following part number will be placed on restriction through the PQC to assist GM Engineering with product feedback.

P/N: 25888947

Your cooperation with this program is greatly appreciated.

Recommendation/Instructions:

If diagnostics have led to the replacement of the Generator, please complete the following questionnaire before contacting the PQC at 1-866-654-7654.

  1. Customer Concern:
  2. List all DTCs:
  3. Using a Digital Volt Ohm Meter (DVOM), what is the battery voltage with the engine off?
  4. Using a DVOM, what is the battery voltage with the engine running?
  5. Using a DVOM, what is the battery voltage at the generator battery post with the engine running?
  6. Perform the following check at room temperature with the battery charged to at least 13 Volts. Connect a carbon pile tester to the battery and then apply a 100 Amp electrical load. What is the maximum generator output?
  7. Have all electrical connections at the generator been checked?
  8. What SI documents have been used? List Doc ID number(s):
  9. Document each step of the trouble chart (include all DVOM readings/comments):

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.