GM S10/S15/Sonoma Pick-Ups 1982-1993 Repair Manual

Engine

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CAUTION
Please refer toChapter 1before discharging the compressor or disconnecting air conditioning lines. Damage to the air conditioning system or personal injury could result. Consult your local laws concerning refrigerant discharge and recycling. In many areas it may be illegal for anyone but a certified technician to service the A/C system. Always use an approved recovery station when discharging the air conditioning.

The following procedures require the use of an engine hoist with sufficient capacity to safely lift and support 500-1000 lbs.

REMOVAL & INSTALLATION



Except 4.3L Engines
  1. Properly relieve the fuel system pressure and disconnect the negative battery cable.
  2.  

Refer toChapter 5 for special proceduresto release fuel system pressure.

  1. Matchmark the hood hinges for installation reference and remove the hood.
  2.  
  3. Drain the cooling system and remove the upper and lower radiator hoses. Disconnect the coolant overflow hose. Disconnect the heater hoses at the engine.
  4.  
  5. Remove the upper and lower fan shrouds. On automatic transmission equipped vehicles, disconnect and plug the transmission cooler lines.
  6.  
  7. Remove the air cleaner assembly and cover the carburetor/throttle body with a rag.
  8.  
  9. Label and disconnect all necessary hoses, vacuum lines and wires from the engine, transmission and transfer case (if equipped).
  10.  
  11. Disconnect the throttle cable, transmission TV cable and cruise control cable (if equipped).
  12.  
  13. Raise and support the vehicle safely. Disconnect the exhaust pipes at the manifold.
  14.  
  15. Remove the front driveshaft and skid plates on 4WD vehicles.
  16.  
  17. If applicable, disconnect the strut rods at the bell housing.
  18.  
  19. For automatic transmission vehicles the body will have to be raised away from the engine in order for the top transmission-to-engine bolt(s) to clear the cowl. Remove the body mounting bolts, then use a floor jack to raise the front of the body away from the frame. Support the body using blocks of wood. Remove the top transmission-to-engine mounting bolts, then remove the wood and lower the body back into position.
  20.  

4WD vehicles equipped with automatic transmissions usually do not require transmission/transfer case removal when removing the engine. If equipped with a 2.8L engine, 4WD and a manual transmission, the transfer case and transmission must usually be removed prior to removing the engine. Please refer to the appropriate procedures located inChapter 7of this manual.

  1. Remove the rear driveshaft.
  2.  
  3. Support the transmission with a floor jack and remove the transmission crossmember.
  4.  
  5. For vehicles equipped with automatic transmissions:

    Remove the torque converter cover
     
    Remove the torque converter-to-flexplate attaching bolts
     
    If transmission removal is desired, remove the transmission shift linkage and, if equipped, the transfer case shift linkage. Remove the remaining transmission-to-engine mounting bolts, and remove the transmission and transfer case (if equipped) as an assembly
     

  6.  
  7. For vehicles equipped with manual transmissions:

    Remove the clutch slave cylinder and set aside
     
    If transmission removal is desired or necessary, remove the transmission shift linkage and shifter, and if equipped, remove the 4WD transfer case shift linkage and shifter.
     
    Remove the transmission-to-bellhousing bolts, if the transmission is being removed, carefully lower the transmission and transfer case (if equipped) as an assembly.
     

  8.  

If the manual transmission is removed, leave the bellhousing in place to protect the clutch during engine removal. Leaving the bell housing in place will also prevent the necessity of jacking the body off the frame to access the top bell housing-to-engine bolts which would otherwise be blocked by the cowl.

  1. Remove the accessory drive belts.
  2.  
  3. Remove the fan.
  4.  
  5. If equipped, remove the power steering pump, A/C compressor and air pump with their brackets and place aside in the engine compartment with the lines intact.
  6.  

DO NOT disconnect the fluid or refrigerant lines.

  1. Verify that nothing else is attached to the engine and, if necessary, disconnect the remaining component(s).
  2.  
  3. Attach a suitable lifting device to the engine and remove. Pause several times while lifting the engine to make sure no hoses or wiring have been snagged by the powerplant.
  4.  

To install:
  1. Using the lifting device, carefully lower the engine into position. Loosely install the engine mount bolts at this time to hold the engine in position.
  2.  
  3. If equipped, reposition and secure the power steering pump and/or A/C compressor to the engine.
  4.  
  5. Install the engine cooling fan and the accessory drive belts.
  6.  
  7. If removed, install the transmission and, if equipped, transfer case.
  8.  
  9. Install the transmission crossmember and remove the support. Install all accessible transmission-to-engine/bell housing bolts (as applicable) at this time.
  10.  
  11. Tighten the engine and transmission fasteners:

    Engine mount-to-engine: 35 ft. lbs. (47 Nm).
     
    Engine mount-to-frame mount: 52 ft. lbs. (70 Nm).
     
    Transmission mount-to-transmission: 45 ft. lbs. (61 Nm).
     
    Transmission mount-to-crossmember: 24 ft. lbs. (33 Nm).
     

  12.  
  13. For automatic transmission vehicles, install the torque converter-to-flexplate bolts and install the torque converter cover.
  14.  
  15. If the transmission/transfer case was removed, reconnect the shift linkage.
  16.  
  17. For manual transmission vehicles, position and install the slave cylinder assembly.
  18.  
  19. Install the rear driveshaft.
  20.  
  21. Using a floor jack, carefully jack the front of the body away from the frame, then install the remaining transmission-to-engine bolts. Carefully lower the body back into position and secure the body mounts.
  22.  
  23. If applicable, connect the strut rods at the bell housing.
  24.  
  25. For 4WD vehicles, install the front driveshaft and, if equipped, the skid plates.
  26.  
  27. Connect the throttle cable, transmission TV cable and cruise control cable (if equipped).
  28.  
  29. Reconnect all necessary hoses, vacuum lines and wires from the engine, transmission and transfer case (if equipped), as noted during removal.
  30.  
  31. Remove the cover from the throttle body/carburetor, then install the air cleaner assembly.
  32.  
  33. For automatic transmission equipped vehicles, remove the plugs, then reconnect the transmission cooler lines.
  34.  
  35. Install the upper and lower fan shrouds.
  36.  
  37. Connect the upper and lower radiator hoses, the coolant overflow hose and the heater hoses at the engine.
  38.  
  39. Align and install the hood using the matchmarks made during removal.
  40.  
  41. Connect the negative battery cable, then proper refill the engine cooling system.
  42.  
  43. Check all powertrain fluid levels and add, as necessary.
  44.  

4.3L Engines
2WD
  1. Disconnect the negative battery cable and properly relieve the fuel system pressure.
  2.  
  3. Scribe matchmarks for installation purposes, then remove the hood.
  4.  
  5. Properly drain the engine cooling system, then disconnect the upper radiator hose from the radiator.
  6.  
  7. Disconnect the overflow hose, then remove the upper fan shroud.
  8.  
  9. If equipped, disconnect the automatic transmission cooler lines from the radiator assembly. Plug the openings to prevent system contamination or excessive fluid loss.
  10.  
  11. Remove the radiator assembly from the truck.
  12.  
  13. Remove the engine cooling fan, then disconnect and plug the heater hoses.
  14.  
  15. Remove the air cleaner assembly, then tag and disconnect all necessary vacuum hoses.
  16.  
  17. Tag and disconnect all necessary wires at the bulkhead, ground wires and main feed wires.
  18.  
  19. Disconnect the throttle and cruise control cables, as equipped.
  20.  
  21. Remove the distributor cap.
  22.  
  23. Raise and support the front of the vehicle safely using jackstands.
  24.  
  25. Remove the catalytic converter-to-exhaust pipe bolts, then disconnect the exhaust pipes at the manifold.
  26.  
  27. Disconnect the strut rods at the bell housing.
  28.  
  29. If equipped, remove the flywheel cover, then remove the torque converter bolts.
  30.  
  31. Remove the shield at the rear of the catalytic converter.
  32.  
  33. Disconnect the converter hanger at the exhaust pipe.
  34.  
  35. Remove the lower fan shroud.
  36.  
  37. Disconnect the fuel lines and loosen all fuel line clamps from the TBI unit and engine. Move the lines to the rear of the engine compartment and tie them in place, but take care not to stress or damage the lines.
  38.  
  39. Remove the 2 outer air dam bolts.
  40.  
  41. Remove the left body mount bolts, then carefully raise the body from the frame and support using an additional set of jackstands.
  42.  
  43. Remove the bell housing retaining bolts, then remove the jackstands and carefully lower the body back to the frame.
  44.  
  45. Remove the motor mount through bolts, then remove the jackstands and lower the truck.
  46.  
  47. Remove the A/C compressor and/or power steering pump from the engine, then position them aside with the lines intact. There is no need to disconnect the lines from either of these components.
  48.  
  49. Support the transmission using a floor jack, then install a suitable lifting device and carefully lift the engine from the vehicle. Pause several times while lifting the engine to make sure no wires or hoses have become snagged.
  50.  

To install:
  1. Carefully lower the engine into the vehicle and engage it with the transmission. Remove the floor jack from the transmission and the lifting device from the engine.
  2.  
  3. Raise and support the truck safely using jackstands.
  4.  
  5. Install the motor mount through bolts.
  6.  
  7. Use the floor jack to raise the body from the frame for access, then install and tighten the bell housing bolts. Lower the body back into position and install the body mount bolts.
  8.  
  9. If equipped, reposition and secure the power steering pump and/or A/C compressor.
  10.  
  11. Install and tighten the 2 outer air dam bolts.
  12.  
  13. Reposition the fuel lines and connect them to the TBI unit. Be sure to properly secure the lines using the clamps.
  14.  
  15. Install the lower fan shroud, then install the converter hanger to the exhaust pipe.
  16.  
  17. Install the shield at the rear of the converter
  18.  
  19. If applicable, install the torque converter bolts, then install the flywheel cover.
  20.  
  21. Connect the strut rods at the bell housing.
  22.  
  23. Connect the exhaust pipes to the manifolds, then install the converter-to-exhaust pipe bolts.
  24.  
  25. Remove the jackstands and carefully lower the truck.
  26.  
  27. Install the distributor cap.
  28.  
  29. Connect the throttle and, if equipped, cruise control cables.
  30.  
  31. Engage all wires at the bulkhead, ground wires and main feed wires as tagged during removal.
  32.  
  33. Install the vacuum hoses as noted during removal, then install the air cleaner assembly.
  34.  
  35. Connect the heater hoses, then install the fan.
  36.  
  37. Install the radiator and the upper fan shroud.
  38.  
  39. Connect the overflow hose, the radiator hoses and, if equipped, the transmission cooler lines.
  40.  
  41. Align and install the hood, then check all powertrain fluid levels.
  42.  
  43. Connect the negative battery cable, then properly fill the engine cooling system.
  44.  
  45. Start and run the engine, then check for leaks.
  46.  

4WD; EXCEPT 1991-92 MFI-TURBO
  1. Disconnect the negative battery cable and properly relieve the fuel system pressure.
  2.  
  3. If equipped, disconnect the underhood light.
  4.  
  5. Scribe matchmarks for installation purposes, then remove the hood.
  6.  
  7. Properly drain the engine cooling system, then raise and support the front of the truck safely using jackstands.
  8.  
  9. Loosen the front and remove the 2 body mounts located near or under the cab.
  10.  
  11. Remove the outer bolts from the front air dam.
  12.  
  13. Raise the body away from the frame to gain the necessary clearance for transmission bolt removal. Remove the top transmission-to-engine bolts, then carefully lower the body back into position.
  14.  
  15. Support the transmission using a floor jack, then remove the remaining transmission-to-engine bolts.
  16.  
  17. Remove the 2nd crossmember (located 2nd back from the front of the truck) from the vehicle.
  18.  
  19. Disconnect the exhaust pipes at the manifolds, then remove the catalytic converter hanger.
  20.  
  21. Remove the torque converter cover bolts and disconnect the front driveshaft from the front differential, then remove the torque converter cover.
  22.  
  23. Release the transmission oil cooler lines at the engine clips.
  24.  
  25. Remove the motor mount bolts.
  26.  
  27. Remove the flexplate-to-torque converter bolts.
  28.  
  29. Remove the front splash shield, then remove the lower fan shroud retaining bolts.
  30.  
  31. Remove the jackstands and carefully lower the truck.
  32.  
  33. Remove the upper fan shroud, then disconnect the hoses from the radiator.
  34.  
  35. Disconnect the oil filter pipe at the remote oil filter.
  36.  
  37. Remove the radiator assembly, then remove the engine cooling fan.
  38.  
  39. Remove the air cleaner assembly.
  40.  
  41. Remove the A/C compressor and/or power steering pump from the engine, then position them aside with the lines intact. There is no need to disconnect the lines from either of these components.
  42.  
  43. Disconnect the fuel lines and loosen all fuel line clamps from the TBI unit and engine. Move the lines to the rear of the engine compartment and tie them in place, but take care not to stress or damage the lines.
  44.  
  45. Tag and disconnect all necessary wires, vacuum lines and emission hoses.
  46.  
  47. Disconnect the accelerator cable and, if equipped, the cruise control cable.
  48.  
  49. Disconnect the engine wiring harness at the bulkhead connector.
  50.  
  51. Disconnect the heater hoses at the engine.
  52.  
  53. Make sure the transmission is supported using a floor jack, then install a suitable lifting device and carefully lift the engine from the vehicle. Pause several times while lifting the engine to make sure no wires or hoses have become snagged.
  54.  

To install:
  1. Carefully lower the engine into the vehicle and engage it with the transmission. Remove the floor jack from the transmission and the lifting device from the engine.
  2.  
  3. Raise and support the truck safely using jackstands.
  4.  
  5. Install the motor mount through bolts.
  6.  
  7. Use the floor jack to raise the body from the frame for access, then install and tighten the bell housing bolts. Lower the body back into position and install the body mount bolts.
  8.  
  9. Install the flexplate-to-torque converter bolts, then install the torque converter cover.
  10.  
  11. Install the front driveshaft assembly, then install the catalytic converter hanger.
  12.  
  13. Connect the exhaust pipe to the manifolds.
  14.  
  15. Install the crossmember.
  16.  
  17. Install the lower fan shroud retaining bolts, then install the front splash shield.
  18.  
  19. Secure the transmission oil cooler lines at the engine clips.
  20.  
  21. Install the front air dam bolts, then remove the jackstands and carefully lower the vehicle.
  22.  
  23. Engage the engine wiring harness at the bulkhead connector.
  24.  
  25. Connect the accelerator cable, and if equipped, the cruise control cable.
  26.  
  27. Connect the heater hoses, then connect the wires, vacuum lines and emission hoses as noted during removal.
  28.  
  29. Reposition and connect the fuel lines making sure they are properly routed in their clamps.
  30.  
  31. If equipped, reposition and secure the power steering pump and/or A/C compressor.
  32.  
  33. Install the engine cooling fan, then install the radiator assembly.
  34.  
  35. Connect the oil filter pipe at the remote oil filter using new O-rings.
  36.  
  37. Connect the radiator hoses and install the drive belt(s).
  38.  
  39. Install the upper fan shroud.
  40.  
  41. Install the hood and check all powertrain fluid levels.
  42.  
  43. Connect the negative battery cable and properly refill the engine cooling system.
  44.  
  45. Start and run the engine, then check for leaks.
  46.  

1991-92 MFI-TURBO
  1. Disconnect the negative battery cable, followed by the positive cable, then properly relieve the fuel system pressure.
  2.  
  3. Properly relieve the engine cooling system and the turbocharger air cooler system. refer to Chapter 1 of this manual for details.
  4.  
  5. Scribe matchmarks for installation purposes, then remove the hood from the vehicle.
  6.  
  7. Remove the air cleaner and duct assembly.
  8.  
  9. Remove the turbocharger air inlet elbow.
  10.  
  11. Remove the upper fan shroud, then remove the fan and pulley nuts.
  12.  
  13. Remove the serpentine drive belt, then remove the fan and pulley.
  14.  
  15. Remove the battery tray and vacuum tank.
  16.  
  17. Raise and support the front of the truck safely using jackstands.
  18.  
  19. Remove the front tire and wheel assemblies, then remove the wheelhouse panels
  20.  
  21. Disconnect the mufflers and tailpipe from the catalytic converter, then remove the catalytic converter support bolts.
  22.  
  23. Remove the turbocharger outlet pipe bracket and outlet pipe nuts. Move the outlet pipe and catalytic converter away from the turbocharger.
  24.  
  25. Disengage the electrical wiring connector from the charge air cooler radiator temperature sensor, then disconnect the radiator hoses.
  26.  
  27. Remove the charge air cooler radiator.
  28.  
  29. Disconnect the exhaust crossover pipe. Underhood access is necessary, either install the front wheels and lower the vehicle, or adjust the jackstands for access.
  30.  
  31. Disconnect the transmission oil cooler lines from the radiator. Plug the openings to prevent system contamination or excessive fluid loss.
  32.  
  33. Remove the upper and lower radiator hoses.
  34.  
  35. Disconnect the engine oil cooler lines from the radiator. Plug the openings to prevent system contamination or excessive fluid loss.
  36.  
  37. Disconnect the heater hoses and the overflow hoses from the radiator.
  38.  
  39. Remove the radiator.
  40.  
  41. Disconnect the oil pipes at the filter adapter.
  42.  
  43. Remove the power steering pump hoses from the steering gear. Plug the openings to prevent system contamination or excessive fluid loss.
  44.  
  45. Remove the engine coolant reservoir.
  46.  
  47. Disconnect the A/C compress from the bracket and position aside with the lines intact.
  48.  
  49. Loosen the charge air cooler clamps, then disconnect the ducts and hoses.
  50.  
  51. Remove the charge air cooler from the supports.
  52.  
  53. Remove the throttle body, gasket and cable bracket from the upper intake manifold and position aside.
  54.  
  55. If not done already, disconnect the heater hose from the lower intake manifold.
  56.  
  57. Tag and disengage the electrical connectors from the upper intake manifold assembly.
  58.  
  59. Disconnect the fuel pipes from the fuel rail assembly.
  60.  
  61. Tag and disengage the remaining electrical connectors and vacuum hoses form the engine assembly.
  62.  
  63. If additional access is needed, further raise and support the front of the truck using the jackstands.
  64.  
  65. Remove the rear driveshaft.
  66.  
  67. Position a support under the transmission, then remove the transmission crossmember and mount.
  68.  
  69. Remove the front driveshaft.
  70.  
  71. Remove the torque converter cover, then disconnect the shift linkage from the transmission.
  72.  
  73. Remove the torque converter bolts.
  74.  
  75. Disconnect the fuel pipes from the hoses near the transfer case, then remove the fuel line bracket from the transfer case.
  76.  
  77. Disengage the fuel line clip and the electrical clips and connectors from the transmission and transfer case.
  78.  
  79. Remove the transfer case and gasket.
  80.  
  81. Disconnect the TV cable from the transmission.
  82.  
  83. Disconnect the transmission cooler lines from the transmission. Be sure to plug all openings.
  84.  
  85. Remove the torque converter housing bolts, then carefully lower the transmission from the vehicle.
  86.  
  87. Remove the transmission oil cooler lines from the oil pan.
  88.  
  89. Remove the fuel line clip, oil line and electrical harness clips from the cylinder heads.
  90.  
  91. Tag and disengage the starter motor electrical connections, then remove the starter from the engine.
  92.  
  93. Remove the engine mount through-bolts and nuts. Underhood access is necessary, either install the front wheels and lower the vehicle, or adjust the jackstands for access.
  94.  
  95. Disengage the electrical connections form the oil pressure and knock sensors, then remove the ground strap.
  96.  
  97. Install a suitable lifting device and carefully lift the engine from the vehicle. Pause several times while lifting the engine to make sure no wires or hoses have become snagged.
  98.  

To install:
  1. Carefully lower the engine into the vehicle.
  2.  
  3. Engage the electrical connections to the oil pressure and knock sensors, then install the ground strap.
  4.  
  5. Make sure the engine is properly positioned on the engine mounts, then route the wiring harnesses into position.
  6.  
  7. If further access is needed, further raise and support the front of the truck using the jackstands.
  8.  
  9. Install the engine mount through-bolts and nuts, then tighten the bolts to 61 ft. lbs. (83 Nm) or the nuts to 52 ft. lbs. (70 Nm).
  10.  
  11. Install the fuel line clip, oil line and electrical harness clips to the cylinder heads.
  12.  
  13. Install the starter motor and engage the wiring as noted during removal.
  14.  
  15. Carefully raise the transmission into position in the vehicle, then install the torque converter housing bolts and tighten to 35 ft. lbs. (41 Nm).
  16.  
  17. Connect the transmission oil cooler lines to the transmission housing and tighten to 21 ft. lbs. (28 Nm).
  18.  
  19. Connect the TV cable to the transmission.
  20.  
  21. Install the transfer case and gasket, then tighten the retaining bolts to 39 ft. lbs. (53 Nm).
  22.  
  23. Install the transmission cooler lines to the oil pan clip.
  24.  
  25. Install the fuel line pipes to the hoses, then connect the fuel line bracket to the transfer case. Tighten the fuel line hose fittings to 19 ft. lbs. (26 Nm) and the bracket bolt to 26 ft. lbs. (35 Nm).
  26.  
  27. Engage the fuel line clip and the electrical wiring clips and connectors to the transmission and transfer case.
  28.  
  29. Install the torque converter bolts and tighten to 46 ft. lbs. (63 Nm), then connect the shift linkage to the transmission.
  30.  
  31. Install the torque converter cover and tighten the retaining bolts to 35 ft. lbs. (47 Nm).
  32.  
  33. Install the front driveshaft and tighten the retaining bolts to 52 ft. lbs. (70 Nm).
  34.  
  35. Install the transmission crossmember and mount, then tighten the crossmember bolts to 35 ft. lbs. (47 Nm).
  36.  
  37. Install the rear driveshaft and tighten the retainers to 15 ft. lbs. (20 Nm).
  38.  
  39. Install the turbocharger outlet pipe and nuts, then install the turbocharger outlet pipe bracket. Tighten the pipe nuts to 41 ft. lbs (55 Nm) and the pipe support bolt to 22 ft. lbs. (30 Nm).
  40.  
  41. Install the catalytic converter support bolts, then install the mufflers and tailpipe to the converter. Tighten the support bolts to 25 ft. lbs. (34 Nm) and the tailpipe bolts to 24 ft. lbs. (32 Nm).
  42.  
  43. Connect the crossover pipe and tighten the nuts to 12 ft. lbs. (16 Nm).
  44.  
  45. Install the charge air cooler radiator, connect the cooler radiator hoses and engage the electrical connection.
  46.  
  47. Underhood access is necessary, either install the front wheels and lower the vehicle, or adjust the jackstands for access.
  48.  
  49. Engage the electrical connectors and vacuum lines to the engine.
  50.  
  51. Connect the fuel pipes to the fuel rail assembly, then install the upper intake manifold assembly and gasket. Tighten the upper intake manifold bolts (starting at the 2 middle bolts, moving outward to each side) to 18 ft. lbs. (24 Nm).
  52.  
  53. Engage the electrical connectors to the upper intake manifold assembly, then connect the heater hose to the lower intake manifold.
  54.  
  55. Install the throttle body, gasket and cable bracket to the upper intake manifold assembly. Tighten the throttle body bolts to 18 ft. lbs. (24 Nm).
  56.  
  57. Install the charge air cooler to the supports, then install the charge air cooler ducts and hoses (secure using the clamps).
  58.  
  59. Reposition the A/C compressor to the bracket and secure.
  60.  
  61. Install the engine coolant reservoir.
  62.  
  63. Install the power steering pump hoses to the steering gear and tighten the fittings to 21 ft. lbs. (28 Nm).
  64.  
  65. Install the oil pipes to the filter adapter and tighten the retaining bolt to 26 ft. lbs. (35 Nm).
  66.  
  67. Install the radiator assembly.
  68.  
  69. Connect the heater hoses and the overflow hose to the radiator.
  70.  
  71. Install the engine oil and transmission fluid cooler lines to the radiator. Tighten the engine oil line fittings to 26 ft. lbs. (35 Nm) and the transmission fluid lines to 20 ft. lbs. (27 Nm).
  72.  
  73. Connect the upper and lower radiator hoses.
  74.  
  75. Install the battery tray and vacuum tank.
  76.  
  77. Install the fan, pulley and nuts.
  78.  
  79. Install the serpentine drive belt, then tighten the pulley nuts to 18 ft. lbs. (24 Nm).
  80.  
  81. Install the upper radiator shroud.
  82.  
  83. Install the turbocharger air inlet elbow.
  84.  
  85. Install the air cleaner and duct.
  86.  
  87. Align and install the hood using the matchmarks made during removal.
  88.  
  89. Install the front wheelhouse panels.
  90.  
  91. Install the front tire and wheel assemblies, then remove the jackstands and carefully lower the vehicle.
  92.  
  93. Check all powertrain fluid levels and add, as necessary.
  94.  
  95. Connect the positive battery cable, followed by the negative battery cable.
  96.  
  97. Properly refill the charge air cooling system and bleed the air.
  98.  
  99. Properly refill the engine cooling system.
  100.  
  101. Start and run the engine, then check for leaks.
  102.  

 
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