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Battery Testing & Inspection: Testing

  1. Inspect the battery for a cracked, broken, or damaged case, which may be indicated by battery acid leakage. Is the battery okay? If so, go to next step. If not, go to step  19 .
  2. Compare the Cold Cranking Amperage (CCA) and Reserve Capacity (RC) of the battery to the original battery or Original Equipment (OE) specification. See BATTERY SPECIFICATIONS  table. Does the battery meet or exceed the specifications? If so, go to next step. If not, go to step  19 .
  3. Inspect battery hydrometer display. If hydrometer display shows a Yellow dot, go to next step. If hydrometer display does not show a Yellow dot, go to step  5 .
  4. Using a small screwdriver, tap top of hydrometer display to dislodge any air bubbles inside. If hydrometer display still shows a Yellow dot, go to step  19 . If hydrometer display does not show a Yellow dot, go to next step.
  5. Turn ignition switch OFF. Attempt to rotate negative battery cable connector clockwise with light finger pressure. If negative connector rotates, go to next step. If negative connector does not rotate, go to step  7 .
  6. Use a torque wrench in order to verify the torque to loosen the negative battery terminal bolt. Is the torque above the specified value of 89 in. lbs. (10 N.m)? If so, go to step  8 . If not, go to next step.
  7. Disconnect negative battery cable and go to step  9 .
  8. Disconnect the negative battery cable. Inspect that the cable bolt is not too long or deformed at the end. Is there is foreign material present inside the nut in the battery terminal, damage to the battery terminal face or cable connector ring? Repair as needed. After repair is complete, go to next step.
  9. Attempt to rotate positive battery cable connector clockwise with light finger pressure. If battery cable rotates, go to next step. If battery cable does not rotate, go to step  11 .
  10. Use a torque wrench in order to verify the torque to loosen the positive battery terminal bolt. Is the torque above the specified value of 89 Inch Lbs. (10 N.m)? If so, go to step  12 . If not, go to next step.
  11. Disconnect positive battery cable and go to step  13 .
  12. Disconnect the negative battery cable. Inspect that the cable bolt is not too long or deformed at the end. Is there is foreign material present inside the nut in the battery terminal, damage to the battery terminal face or cable connector ring? Repair as needed. After repair, go to next step.
  13. Clean and wire brush lead face of both battery terminals and metal contact surfaces on both cable connectors. Remove bolts from both battery cable connectors and inspect for corrosion and defects. Repair or replace as necessary. If battery and cables terminals are clean and in good condition, go to next step.
  14. Connect positive battery cable to battery and tighten bolt to 11 ft. lbs. (15 N.m). Go to next step.
  15. Connect negative battery cable to battery and tighten bolt to 11 ft. lbs. (15 N.m). Go to next step.
  16. Ensure all electrical loads are off. Follow manufacturers instructions and install Battery Tester (J-42000) to vehicle battery. Follow any instructions displayed on battery tester. If battery tester passed the battery, go to next step. If battery tester did not pass battery, go to step  18 .
    NOTE: Always write the test code displayed by the tester on the repair order for any warranty purposes. The number is a unique code that describes the test data for a particular battery at a particular time. The test code may occasionally repeat when you retest the same battery. More often, each test will result in a different code.
  17. Press CODE button on battery tester. Record displayed code on vehicle repair order for warranty purposes. Battery is okay.
  18. Press CODE button on battery tester. Record displayed code on vehicle repair order for warranty purposes. Replace battery.
  19. Replace battery.
BATTERY SPECIFICATIONS

Application Specification
Models Equipped With 60 Amp Generators (GM P/N 974)
Replacement Battery Number 26R-50S
Cold Cranking Amps 390 Amps
Reserve Capacity Rating 71 Minutes
Models Equipped With 70-Amp Generators (GM P/N 2841)
Replacement Battery Number 85-7YR
Cold Cranking Amps 600 Amps
Reserve Capacity Rating (1)
Models Equipped With 85-Amp Generators (GM P/N 3274)
Replacement Battery Number 24R-7YR
Cold Cranking Amps 700 Amps
Reserve Capacity Rating (1)
(1) Information not available from manufacturer.
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