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A. Disconnect the negative battery cable. B. Disconnect the positive battery cable. C. Install the tester adapters. D. Follow the instructions for testing a removed battery. E. Replace the battery only if the second test shows a REPLACE BATTERY or BAD CELL- REPLACE result. Use the test code from the second test for any warranty purposes. z Use the correct terminal adapters. Do not use any common bolts or a combination of bolts, of nuts, and of Diagnostic Procedures 1. Inspect the battery for a cracked, broken, or damaged case, which may be indicated by battery acid leakage. Is the battery OK? If yes, go to next step. If no, 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. Refer to BATTERY USAGE . Does the battery meet 3. Does the hydrometer display a yellow dot? If yes, go to next step. If no, go to step 5 . 4. Tap the hydrometer lightly on top with the handle of a small screwdriver in order to dislodge any air bubbles inside the battery. Does the hydrometer still display a yellow dot? If yes, go to step 19 . If no, go 5. Turn OFF the ignition. Attempt to rotate the negative battery cable connector clockwise with light finger pressure. Does the negative connector rotate? If yes, go to next step. If no, 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? 10 N.m (88 lb in). If yes, go to step 8 . If no, go to next step. NOTE: Important: Always write the test code displayed by the tester on the CAUTION: Before servicing any electrical component, the ignition key must be in the OFF or LOCK position and all electrical loads must be OFF, unless
2004 Hummer H2 2004 STARTING & CHARGING SYSTEMS Starters - H2
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