Supercharger Replacement on STS-V (step by step)
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Cadillac STS-V Series Forum Discussion, Supercharger Replacement on STS-V (step by step) in Cadillac V-Series Forums; Can anyone provide instructions on how to replace my supercharger? I know this is a big job. My incentive to ...
  1. #1
    Charlemagne65 is offline Cadillac Owners Member
    Automobile(s): 2007 STS-V
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    Supercharger Replacement on STS-V (step by step)

    Can anyone provide instructions on how to replace my supercharger? I know this is a big job. My incentive to do so stems from the fact that the dealer wants 4K plus the blower! Any help would be awesome!

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  3. #2
    Fierofiend is offline Cadillac Owners Fanatic
    Automobile(s): 2008 STS-V
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    Re: Supercharger Replacement on STS-V (step by step)

    Code:
    Removal Procedure
    
        Remove the hood. Refer to Hood Replacement .
        Remove the cross vehicle brace. Refer to Brace Replacement - Cross Vehicle .
        Remove the engine sight shield. Refer to Intake Manifold Sight Shield Replacement .
        Remove the wiper arm assemblies. Refer to Wiper Arm Replacement .
        Remove the air inlet grille. Refer to Air Inlet Grille Panel Replacement .
        Remove the wiper motor module. Refer to Wiper Motor Module Replacement .
        Remove the air inlet housing front panel. Refer to Air Inlet Housing Front Panel Replacement .
        Remove the front and rear supercharger inlet duct assemblies. Refer to Supercharger Inlet Duct Assembly Replacement .
        Drain the charge air cooling system. Refer to Draining and Filling Cooling System - Charge Air Cooling System .
    
        Important  Do not allow coolant to contact the supercharger drive belt.
        Place a shop rag under the front portion of the supercharger to catch any remaining coolant.
    
        Remove the front portion of the supercharger front manifold (2). It is not necessary to remove the hoses from the manifold. Discard the manifold
    O-ring seals. Position the hoses with manifold aside. Refer to Charge Air Cooler Front Manifold Replacement .
    
        Remove the fuel injector rail assembly (1). Refer to Fuel Injector and Fuel Rail Replacement .
    
        Disconnect the throttle body electrical connector (3).
        Disconnect the evaporative emission (EVAP) canister purge solenoid valve electrical connector (7).
    
        Disconnect the supercharger bypass regulator solenoid valve electrical connector (3).
    
    
        Disconnect the manifold absolute pressure (MAP) sensor vacuum line (2) from the supercharger.
        Disconnect the supercharger intake air temperature (IAT) sensor electrical connector.
    
    
        Disconnect the supercharger inlet absolute pressure (SIAP) sensor vacuum line fitting (1) from the rear of the supercharger.
    Position the sensors, vacuum lines, and wire harness aside.
    
    
        Disconnect the positive crankcase ventilation (PCV) tube fitting (1) from the right camshaft cover.
        Remove the supercharger drive belt. Refer to Supercharger Drive Belt Replacement .
    
        Warning!  The supercharger must be lifted with the EN 47748. The weight of the supercharger assembly is approximately 34 kg (75 lb)
    and could cause injury if lifted by hand.
    
        Caution!  The supercharger must be lifted with the EN 47748. Damage could occur to the finish and/or components of the supercharger
    and surrounding engine or vehicle components.
    
    
        Install the EN-47748  (1-5) to the supercharger.
    
        Install an engine hoist to the EN-47748 .
        Remove the supercharger.
    
        Caution!  The EN 47833 must be installed to the supercharger in order to prevent damage to the supercharger bypass actuator cable
    and the finish of the supercharger. Failure to use the EN 47833 can lead to bending the brackets of the supercharger bypass actuator
    cable. Bent supercharger bypass actuator cable brackets will cause the supercharger bypass valve to function improperly.
    
    
        Install the EN-47833 to the supercharger while the supercharger is suspended by the engine hoist.
        Place the supercharger on a workbench and remove the engine hoist.
        If replacing the supercharger, transfer the necessary parts.
        Remove the supercharger gaskets from the engine.
        Clean and inspect the supercharger. Refer to Supercharger Cleaning and Inspection .
        Clean and inspect the supercharger mating surface on the engine.
    
    Installation Procedure
    
    
        Install the new supercharger gaskets to the engine.
    
    
        Install the appropriate size guide pins (1, 2) from the EN 46109 alignment pin set to the engine as shown.
    
        If previously removed, install the EN-47748 to the supercharger.
        Install an engine hoist to the EN-47748 and raise the supercharger off the workbench.
        Remove the EN-47833 from the supercharger.
        Inspect the gasket surface on the supercharger and clean as necessary.
    
        Ensure that all wiring and vacuum lines are positioned aside and install the supercharger to the engine.
        Remove the engine hoist and the EN-47748 .
        Remove the EN 46109 alignment pins.
    
        Loosely install the supercharger bolts.
    
        Caution! Refer to Fastener Notice in Cautions and Notices.
    
        Tighten the supercharger bolts in sequence as shown.
    
        Tighten
        Tighten the supercharger bolts to 25 N·m (18 lb ft).
        Install the supercharger drive belt. Refer to Supercharger Drive Belt Replacement .
        Connect the PCV tube fitting (1) to the right side camshaft cover.
    
        Connect the SIAP sensor vacuum line fitting (1) to the rear of the supercharger.
    
    
        Connect the supercharger IAT sensor electrical connector.
        Connect the MAP sensor vacuum line fitting (2) to the supercharger.
    
        Connect the supercharger bypass regulator solenoid valve electrical connector (3).
    
        Connect the EVAP canister purge solenoid valve electrical connector (7).
        Connect the throttle body electrical connector (3).
    
        Install the fuel injector rail assembly (1).
    
        Using NEW O-rings, install the front portion of the supercharger front manifold (2). Refer to Charge Air Cooler Front Manifold Replacement .
        Install the front and rear supercharger inlet duct assemblies. Refer to Supercharger Inlet Duct Assembly Replacement .
        Install the air inlet housing front panel. Refer to Air Inlet Housing Front Panel Replacement .
        Install the wiper motor module. Refer to Wiper Motor Module Replacement .
        Install the air inlet grille. Refer to Air Inlet Grille Panel Replacement .
        Install the wiper arm assemblies. Refer to Wiper Arm Replacement .
        Install the engine sight shield. Refer to Intake Manifold Sight Shield Replacement .
        Install the cross vehicle brace. Refer to Brace Replacement - Cross Vehicle .
        Install the hood. Refer to Hood Replacement .
        Fill the charge air cooling system with coolant and check for leaks. Refer to Draining and Filling Cooling System - Charge Air Cooling System .

  4. #3
    boomys10 is offline Cadillac Owners Enthusiast
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    Re: Supercharger Replacement on STS-V (step by step)

    dealers are crazy with these cars and the prices they try to charge.

  5. #4
    carter's_sts is offline Cadillac Owners Connoisseur
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    Re: Supercharger Replacement on STS-V (step by step)

    That is a crazy amount for labor for sure. Pretty big job, but 4k?

    Nice instructions.

  6. #5
    TimmyC is online now Cadillac Owners Connoisseur
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    Re: Supercharger Replacement on STS-V (step by step)

    There are many unnecessary steps in those instructions. No need to remove the wipers or any cowling. Leave the fuel rail on, just disconnect the line. Leave the intercooler lid on.

    Remove side shields
    Remove drive belt
    Remove intake. Leave the rear Y portion.
    Disconnect throttle harness and evap plug.
    Disconnect evap tube
    Disconnect fuel line. (3/8 fuel line tool from parts store).
    Disconnect brake booster hose
    Disconnect IAT2 sensor and bypass valve solenoid wiring connections
    Disonnect map sensors
    Disconnect right side valve cover breather
    Remove ten supercharger mounting bolts

    There might be some minor things I forgot so pay attention when you go to pluck it out of there. You'll need a helper to lift it out. It takes me about 30 minutes to get mine off, tops.
    boomys10 likes this.

  7. #6
    1madstsv's Avatar
    1madstsv is offline Cadillac Owners Connoisseur
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    Re: Supercharger Replacement on STS-V (step by step)

    Yep 30-45 mins off 30-45 on buy my self. First time 1:30. Off 40 back on. Where you live I will do it for free.
    boomys10 likes this.

  8. #7
    Charlemagne65 is offline Cadillac Owners Member
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    Re: Supercharger Replacement on STS-V (step by step)

    Okay. Thanks to all. Once I got all the wires off it came out easy. I had ordered what I thought was a pair of new intake manifold gaskets. GMPartsdirect only sent one! I guess I will go to dealer to get one more? Would anyone risk using the auto parts house (felpro) version of the gaskets to save money and time.
    Say. I had a small coolant leak under the middle of the car after driving it for a while. It was on the ground near firewall. I thought while I had it apart I would search for it. Does anyone have any ideas where it might be coming from???

  9. #8
    TimmyC is online now Cadillac Owners Connoisseur
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    Re: Supercharger Replacement on STS-V (step by step)

    You can reuse your stock intake gaskets. Don't bother buying new.

  10. #9
    Psycho-albanian is offline Cadillac Owners Fanatic
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    Re: Supercharger Replacement on STS-V (step by step)

    Wouldn't u run the risk of having a vacuum leak reusing the old gasket Tim?

    ----------

    I was thinking about getting new gaskets for the new blower and throttle body.

  11. #10
    TimmyC is online now Cadillac Owners Connoisseur
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    Re: Supercharger Replacement on STS-V (step by step)

    Nah. If they look good, reuse them. I've used mine at least ten times now.

  12. #11
    baller95's Avatar
    baller95 is offline Cadillac Owners Enthusiast
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    Re: Supercharger Replacement on STS-V (step by step)

    Quote Originally Posted by TimmyC View Post
    Nah. If they look good, reuse them. I've used mine at least ten times now.
    Why'd you have to replace it that many times?! I'm looking into getting a 06 V soon and I hope it's not a common issue!

  13. #12
    TimmyC is online now Cadillac Owners Connoisseur
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    Re: Supercharger Replacement on STS-V (step by step)

    R&D, testing upgrades.

  14. #13
    Charlemagne65 is offline Cadillac Owners Member
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    Re: Supercharger Replacement on STS-V (step by step)

    Okay Guys:
    Everything is back in/on. Only a couple of minor things..... Question: 1) On the right bank (passengers side) of the engine, One of the three pressure sensors (the middle one) i cannot find the vacuum line for it, and where it goes to? I got the other two hooked up but I'm not even sure what it looks like and where to put it? 2) on the left bank valve cover the larger line goes to what? I can't find a place to hook it up? Also, where should I buy these parts if they are lost? Dealer is too HIGH! Part Direct ships way too SLOW? Thanks for the help!

  15. #14
    TimmyC is online now Cadillac Owners Connoisseur
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    Re: Supercharger Replacement on STS-V (step by step)

    Nipple is open on that sensor.

    Hose on other side goes to under side of intake tubing.

  16. #15
    Charlemagne65 is offline Cadillac Owners Member
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    Re: Supercharger Replacement on STS-V (step by step)

    TimmyC

    Okay. I have 3 pressure sensors when looking at the engine from the right bank. The sensor on the left (closest to the firewall) hooks up to the back of the supercharger? The one on the right (closet to front of engine) plugs into front of the supercharger? The one in the middle has no line hooking to anything???? Really?

    Hose on the other side, i will look at intake tubing underside again.

    Say. do I need to put any oil in supercharger, or it factory sealed? And can I fill the intercooler system through the cap on top of the supercharger?

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