Auto Repair Manual Free Download and ReviewsFree download ebook pdf files automotive manual

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Removal 1. Disconnect the battery ground cable. For additional information, refer to Section 414-01. 2. Drain the cooling system. For additional information, refer to Section 303-03. 3. Remove the camshaft position (CMP) sensor. For additional information, refer to Camshaft Position (CMP) Sensor in this section. 4. Disconnect the hose from the coolant pump outlet tube. 5. Remove the two (one shown) coolant pump outlet tube bolts and position the tube assembly aside. 6. Remove the accessory drive belt. Rotate the accessory drive belt tensioner counterclockwise. Push the spring clip toward the belt tensioner to lock the accessory drive belt tensioner in place. 7. NOTE: The bolt that is positioned under the power steering pressure tube fitting will remain with the pump. Remove the four power steering pump bolts and position the power steering pump aside. 8. CAUTION: Do not turn the crankshaft or the camshaft during the removal and installation procedure or the fuel system timing will be out of time with the engine and possibly cause engine damage. Rotate the crankshaft until the No. 1 cylinder is at top dead center (TDC) of the compression stroke. 9. Remove the bolt. 10. NOTE: The oil pump driveshaft might not come out with the camshaft synchronizer. If so, retrieve the oil pump drive shaft before proceeding. Remove the camshaft synchronizer. Installation CAUTION: After installation, do not loosen the synchronizer bolt and rotate the synchronizer assembly. The synchronizer assembly is not adjustable. Do not loosen the synchronizer bolt after the alignment tool has been removed in order to align the CMP electrical connector for any reason. If the electrical connector is not in the correct position, the synchronizer assembly must be removed, the alignment tool and the assembly reinstalled if the engine has not been rotated from TDC of the compression on the No. 1 cylinder. 1. CAUTION: A special tool must be used during the installation of the replacement synchronizer assembly. Failure to follow this procedure will result in the fuel system being out of time with the engine, possibly causing engine damage. Install the special tool on the camshaft synchronizer by rotating the tool until it engages the notch in the camshaft synchronizer housing and the armature. 2. CAUTION: It is very important to coat the gear on the camshaft synchronizer with clean engine oil prior to installation. Failure to do so could result in gear failure. NOTE: During installation, the arrow on the special tool will rotate clockwise until oil pump intermediate shaft and camshaft gear engages. Install the camshaft synchronizer housing assembly so the arrow on the special tool is 54 degrees from the centerline of the engine.

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Caution: Refer to Battery Disconnect Caution in Service Precautions. Notice: Refer to Use GM Goodwrench DEX-COOL Coolant in Service Precautions. 1. 2. 3. 4. 5. Disconnect the negative battery cable. Drain the cooling system. Recover the coolant. Refer to Service and Repair. Remove the drive belt. Remove the water pump pulley bolts. Remove the water pump pulley. 6. Remove the coolant pump attaching bolts. 7. Remove the coolant pump. 8. Clean the coolant pump and the sealing surfaces. Installation Procedure Notice: Refer to Fastener Notice in Service Precautions. 1. Install the water pump and new gasket. Tighten the bolts to 10 Nm (89 inch lbs.) . 2. Install the water pump pulley and the bolts. 3. Install the drive belt. 4. Tighten the water pump pulley bolts. Tighten the bolts to 25 Nm (18 ft. lbs.) . 5. Connect the negative battery cable. Tighten the bolts to 16 Nm (12 ft. lbs.) . 6. Refill the cooling system. Refer to Service and Repair. 7. Inspect the cooling system for leaks.

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REMOVAL 1. Disconnect the battery ground cable. 2. Drain the radiator. 3. Remove the auxiliary coolant pump. 4. Disconnect the connector located at the end of the coolant valve harness pigtail. 5. Disconnect the three quick-disconnect couplings from the coolant control valve hoses. NOTE: – The top heater hose has a green identifying mark to match the hose on the dual coolant flow valve. If mark is not visible, identify the hoses for location. This will aid in the correct installation of the hose assemblies. – Hose assemblies shown with components removed for clarity. 6. Raise the vehicle. 7. Remove the coolant valve assembly mounting bolt and the nut. 8. Raise the valve and disconnect the coolant supply and return lines.

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Coolant pump Gasket 10 Nm (7 ft. lbs.) Removing: – Remove toothed belt, Refer to Engine; Service and Repair. Note: The vibration damper does not have to be unbolted or removed. Remove toothed belt tensioning roller. Remove coolant pump (9 Torx bolts). Installing – Install coolant pump (9 Torx bolts). – Install toothed belt tensioning roller. – Install toothed belt, Refer to Engine; Service and Repair. Tightening torques Coolant Pump 14 Nm (10 ft. lbs.) Toothed Belt Tensioning Roller 45 Nm (33 ft. lbs.)

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1) Open engine hood. 2) Disconnect ground cable from the battery. 3) Drain engine coolant completely. 4) Disconnect radiator outlet hose from engine coolant pump. 5) Remove radiator fan motor assembly. 6) Remove V-belt(s). 7) Remove timing belt. Remove belt tension adjuster. 9) Remove camshaft position sensor. 10) Remove left side camshaft pulley by using ST. ST 499207100 CAMSHAFT SPROCKET WRENCH 11) Remove left side rear timing belt cover. 12) Remove tensioner bracket. 13) Disconnect heater hose from engine coolant pump. 14) Remove engine coolant pump. B: INSPECTION 1) Check engine coolant pump bearing for smooth rotation. 2) Check engine coolant pump pulley for abnormalities. 3) Using a dial gauge, measure impeller runout in thrust direction while rotating the pulley. “Thrust” runout limit: 0.5 mm (0.020 inch) 4) Check clearance between impeller and pump case. Clearance between impeller and pump case: Standard: 0.5 – 0.7 mm (0.020 – 0.028 inch)