GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Starter System Check?

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Go to Step 2

Go to Starting System Check

2

  1. Inspect the battery hydrometer.
  2. Remove the INJR Fuse from the underhood junction block to prevent the engine from starting.
  3. Place the ignition switch in CRANK for 15 seconds.
  4. Using a DMM, measure the voltage between the battery terminals.

Is the measured voltage greater than the specified value?

8 V

Go to Step 3

Go to Step 6

3

Using a DMM, measure the voltage between the negative battery terminal and the engine block while the ignition switch is placed in CRANK for 15 seconds.

Is the measured voltage less than the specified value?

0.5 V

Go to Step 4

Go to Step 8

4

Using a DMM, measure the voltage between the positive battery terminal and the starter solenoid terminal B while the ignition switch is placed in CRANK for 15 seconds.

Is the voltage less than the specified value?

0.5 V

Go to Step 5

Go to Step 9

5

Replace the starter motor. Refer to Starter Motor Replacement .

Is the starter motor replacement complete?

--

Go to Starting System Check

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6

Perform the parasitic load test. Refer to Battery Electrical Drain/Parasitic Load Test .

Does the battery test OK?

--

Go to Step 7

Go to Step 10

7

Inspect the battery and starter motor terminals for corrosion or poor contact. If OK, replace the starter motor. Refer to Starter Motor Replacement .

Is the replacement complete?

--

Go to Starting System Check

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8

  1. Clean the negative battery cable connections and repeat the test.
  2. If the measured voltage is still greater than the specified value, replace the negative battery cable. Refer to Battery Cable Replacement .

Is the replacement complete?

0.5 V

Go to Starting System Check

--

9

  1. Clean the positive battery cable connections and repeat the test.
  2. If the measured voltage is still greater than the specified value, replace the positive battery cable. Refer to Battery Cable Replacement .

Is the replacement complete?

0.5 V

Go to Starting System Check

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10

Replace the battery. Refer to Battery Replacement .

Is the replacement complete?

--

Go to Starting System Check

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