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Thread: ground wires 5.3 harness

  1. #1
    Join Date
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    How many ground wires bolt on to the back of the head(s)? I picked up a 02 silverado body and im trying to put a motor in it and just want to make sure. Ive heard the fbodys have 3 but ive only found 2 on this truck. thx
    02 Silverado
    02 TrailBlazer

  2. #2
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    Aug 2005
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    <div class='quotetop'>QUOTE(twobit &#064; Mar 16 2006, 04&#58;48 PM) [snapback]47113[/snapback]</div>
    How many ground wires bolt on to the back of the head(s)? I picked up a 02 silverado body and im trying to put a motor in it and just want to make sure. Ive heard the fbodys have 3 but ive only found 2 on this truck. thx
    [/b]
    2 down into the block and 2 into the back of the block. Not into the heads.


    03 Chevy ECSB, Z71, 6.0L(LQ4), Maggie @ 9PSI, 4l80E, PI Vig 2800, Detroit True-Trac, 4.10, 90mm LS2 TB, Meth Injection, HSW Dry N20, LPE GT7 Cam, 918 springs, Dynatech LT's, Hi Flow cats, custom stainless exhaust, DMH cutouts, DJM Suspension Drop, E-Fans, AirAid, HPT 2Bar SD Tuned, 11.68 @ 114.2

  3. #3
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    Nice, thanks&#33; Where did you get this illustration?
    02 Silverado
    02 TrailBlazer

  4. #4
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    <div class='quotetop'>QUOTE(twobit &#064; Mar 17 2006, 09&#58;51 PM) [snapback]47263[/snapback]</div>
    Nice, thanks&#33; Where did you get this illustration?
    [/b]
    My son n&#39; law is a GM tech. Lets me borrow his login to GM&#39;s site.

    03 Chevy ECSB, Z71, 6.0L(LQ4), Maggie @ 9PSI, 4l80E, PI Vig 2800, Detroit True-Trac, 4.10, 90mm LS2 TB, Meth Injection, HSW Dry N20, LPE GT7 Cam, 918 springs, Dynatech LT's, Hi Flow cats, custom stainless exhaust, DMH cutouts, DJM Suspension Drop, E-Fans, AirAid, HPT 2Bar SD Tuned, 11.68 @ 114.2

  5. #5
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    Denton Texas
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    Wow, now that&#39;s a good clear answer to the question at hand&#33;
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  6. #6
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    Yea, thats awesome.
    02 Silverado
    02 TrailBlazer

  7. #7
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    I didn&#39;t remeber having 2 wires on the passenger side. Wire #8 is only if you have a (right hand) battery. So you probably only have 3 wires, 1,5 and 7.

    (1) Ground 103 (G103)
    (1) Ground 103 (G103)
    (2) Engine Harness- H02S
    (3) HO2 Sensor connector- Bank 1, Sensor 1
    (4) Fuel Line Bracket
    (5) Ground 104 (G104)
    (5) Ground 104 (G104)
    (6) Oil Pressure Sensor Connector
    (6) Oil Pressure Sensor
    (7) Engine Ground Strap (G107)
    (8) TP 1 Battery Cable (G106)

    03 Chevy ECSB, Z71, 6.0L(LQ4), Maggie @ 9PSI, 4l80E, PI Vig 2800, Detroit True-Trac, 4.10, 90mm LS2 TB, Meth Injection, HSW Dry N20, LPE GT7 Cam, 918 springs, Dynatech LT's, Hi Flow cats, custom stainless exhaust, DMH cutouts, DJM Suspension Drop, E-Fans, AirAid, HPT 2Bar SD Tuned, 11.68 @ 114.2

  8. #8
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    Ive only found 2 so far.
    02 Silverado
    02 TrailBlazer

  9. #9
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    <div class='quotetop'>QUOTE(twobit &#064; Mar 17 2006, 10&#58;25 PM) [snapback]47273[/snapback]</div>
    Ive only found 2 so far.
    [/b]
    Should definately have 3. 1 being the big flat cable. Other two have shrouding around them.

    03 Chevy ECSB, Z71, 6.0L(LQ4), Maggie @ 9PSI, 4l80E, PI Vig 2800, Detroit True-Trac, 4.10, 90mm LS2 TB, Meth Injection, HSW Dry N20, LPE GT7 Cam, 918 springs, Dynatech LT's, Hi Flow cats, custom stainless exhaust, DMH cutouts, DJM Suspension Drop, E-Fans, AirAid, HPT 2Bar SD Tuned, 11.68 @ 114.2

  10. #10
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    Okay, the big flat one is the one im overlooking.
    02 Silverado
    02 TrailBlazer

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