GM 19244747 GENERATOR Assembly (Remanufacture)

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To replace the alternator on a 4.3L V6 (2014 and earlier) and 5.0L, 5.7L, and 7.4L V8 engines, start by disconnecting the negative terminal of the battery. Then, remove the coolant reservoir, air filter housing, and upper fan shroud. Next, remove the drivebelt and the heater hose pipe retaining bolts from the alternator support bracket. Push the hose and pipe aside and remove the dipstick tube, engine oil filler tube, and transmission fluid filler tube retaining bolts. Lift everything up to provide clearance and remove the support bracket. Remove the front and rear alternator mounting bolts, lift the alternator off its mounting bracket, and disconnect the battery cable and field wire electrical connector from the backside of the alternator. If replacing the alternator, ensure the new unit matches the old one in terms of terminals and identification numbers. If necessary, switch the pulley from the old unit to the new one. Finally, install the new alternator and check the charging voltage to ensure proper operation. Disconnecting the negative battery terminal, removing the drivebelt, and disconnecting the battery cable and field wire electrical connector from the alternator. Remove the alternator mounting bolts and the alternator from the engine. When replacing the alternator, ensure the new unit matches the old one in terms of terminals and identification numbers. If necessary, switch the pulley. Install the new alternator and check the charging voltage for proper operation.