WHAT DO I CHECK FOR?

1994 GMC Sierra

Tiny

nationsdoug

May, 4, 2012 AT 4:40 AM

Was driving down the road and everything jus shut off at once and now nothing comes on

FOUND 14746 RELATED QUESTIONS

Wiring Issue?

68 ANSWERS
128 IMAGES

1 Answer

Tiny

caradiodoc

May, 4, 2012 AT 5:12 AM

Measure the battery voltage first. If it's 12.6 volts, it's fully charged. Check the smaller red positive battery cable where it attaches to the under-hood fuse box. Be sure that connection is clean and tight.

If the battery voltage is around 12.0 volts, it is discharged. Suspect the generator. Charge the battery, then measure the battery voltage again with the engine running. It must be between 13.75 and 14.75 volts.

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