How to Replace the Alternator in a Cadillac Escalade

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The alternator in a Cadillac Escalade sends electrical current to various accessories in the vehicle while the engine is running. Most modern alternators have built-in voltage regulators to maintain the voltage level. If your battery continually runs down or your headlights dim while you drive, you may need to replace the alternator.

Things You'll Need

  • Socket wrench set
  • Torque wrench
  • Determine that the new alternator is compatible with your Escalade's engine. Models built from 1998 to 2000 have a 5.7 L engine, 2002 to 2006 models may have a 5.3 L or 6.0 L engine and models manufactured after 2006 have a 6.2 L engine.

  • Disconnect the negative battery cable with a socket wrench. Remove the accessory drive belt and engine sight shield to access the alternator. Remove the B+ nut with a socket wrench so that you can disconnect the wiring from the alternator.

  • Take the two mounting bolts off of the alternator with a socket wrench and remove the alternator assembly.

  • Install the new alternator assembly and tighten the left mounting bolt to 37 ft. lbs. with a torque wrench. Use a torque wrench to tighten the right bolt to 18 ft. lbs. if you have a 5.7 L engine and 37 ft. lbs. for all other engine sizes. Connect the wiring to the alternator and torque the B+ nut to 71 in. lbs. for a 5.7 L engine and 13 ft. lbs. for all other engines.

  • Attach the engine sight shield or mounting bracket if you removed it. Connect the accessory drive belt and negative battery cable.

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