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Thread: Help. Motor swap done. Won't start.

  1. #1
    Join Date
    Apr 2005
    Location
    belton, tx
    Posts
    747
    Everything is hooked up and ready to start. All accessories come on. No signal to the starter? Also, remote locks dont work. Did we f'up the VATS? Anyone else had this problem. I've heard it could be the "body control module". Any input is appreciated.
    2013 2wd Z71 6.2 crew cab

    Old Truck: '04 Chevy crew cab stroked/bored 6.0 to 408ci. forged internals, patriot 68cc stage 3 heads (11.1:1cr), comp 244/246 .600 115lsa cam, 3000 yank tc, built 4L60E, walbro 255, 60# mototron injectors, pacesetter lt's 4" single no-cat exhaust

    best time 12.93 1/4 mi @ 103 in the turbo truck.

    1968 Camaro Convertible, super sweet!

  2. #2
    Join Date
    Jan 2005
    Location
    Conway, AR
    Posts
    1,353
    Was the VATS disabled in the tune from Allen? I think he does that in most tunes. Do you just need a security relearn?

    Chris
    2009 Silverado, HPTuners, all stock.

  3. #3
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,038
    <div class='quotetop'>QUOTE(stssilverado &#064; Feb 7 2006, 03&#58;08 AM) [snapback]43761[/snapback]</div>
    Everything is hooked up and ready to start. All accessories come on. No signal to the starter? Also, remote locks dont work. Did we f&#39;up the VATS? Anyone else had this problem. I&#39;ve heard it could be the "body control module". Any input is appreciated.
    [/b]
    I talked to your mechanic today, it&#39;s not vats. It sounds like an open wire or something along those lines. He said not only the new pcm does it, but the original one does the same thing, so it&#39;s not pcm related. The pcm that was in there should work, just like it did before.
    Low battery, starter wires, fuse, relay, etc. Was all that checked?

    looking forward to you coming down, i want to see what that thing does on the dyno&#33;

    good luck and call if you have any questions,

    allen

  4. #4
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Did he try a jumper wire on the starter? Maybe the starter chose today to crap out.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  5. #5
    Join Date
    Apr 2005
    Location
    belton, tx
    Posts
    747
    We jumped a wire from the relay under the hood. The big fuse box. Starter bumped off. We tried a new relay, no. The problem lies between the key and the relay box right? Which leads me to believe it&#39;s a security problem. Neither the new pcm nor the old one will work. So it&#39;s not in the tune. GM tech said it&#39;s prob the security sys. He&#39;s gonna check it out tonight.
    2013 2wd Z71 6.2 crew cab

    Old Truck: '04 Chevy crew cab stroked/bored 6.0 to 408ci. forged internals, patriot 68cc stage 3 heads (11.1:1cr), comp 244/246 .600 115lsa cam, 3000 yank tc, built 4L60E, walbro 255, 60# mototron injectors, pacesetter lt's 4" single no-cat exhaust

    best time 12.93 1/4 mi @ 103 in the turbo truck.

    1968 Camaro Convertible, super sweet!

  6. #6
    Join Date
    Apr 2005
    Location
    belton, tx
    Posts
    747
    GM Tech said it could be because the battery was disconeccted for too long and the security lost its memory. They are coming out to re-program it tonight.
    2013 2wd Z71 6.2 crew cab

    Old Truck: '04 Chevy crew cab stroked/bored 6.0 to 408ci. forged internals, patriot 68cc stage 3 heads (11.1:1cr), comp 244/246 .600 115lsa cam, 3000 yank tc, built 4L60E, walbro 255, 60# mototron injectors, pacesetter lt's 4" single no-cat exhaust

    best time 12.93 1/4 mi @ 103 in the turbo truck.

    1968 Camaro Convertible, super sweet!

  7. #7
    Join Date
    Apr 2005
    Location
    belton, tx
    Posts
    747
    Oops&#33; Loose ground wire for PCM. Starts and idles fine. Intercooler goes in tomorrow&#33; Here I come Allen.
    2013 2wd Z71 6.2 crew cab

    Old Truck: '04 Chevy crew cab stroked/bored 6.0 to 408ci. forged internals, patriot 68cc stage 3 heads (11.1:1cr), comp 244/246 .600 115lsa cam, 3000 yank tc, built 4L60E, walbro 255, 60# mototron injectors, pacesetter lt's 4" single no-cat exhaust

    best time 12.93 1/4 mi @ 103 in the turbo truck.

    1968 Camaro Convertible, super sweet!

  8. #8
    Join Date
    Nov 2005
    Location
    ohio
    Posts
    1,712
    thats a relief huh? its always something little. hows it sound?&#33;
    07 SILVERADO CLASSIC 2500 HD 4x4 CREW CAB LT3 DURAMAX LBZ/ALLISON 6 SPEED 5'' MBRP Turbo back exhaust 6'' TIP /NO CAT- NO MUFF/ AFE Intake/ EDGE HOT JUICE /MERCHANT AUTO STG III Built Allison/P I ConverterTTS Twin Lift Pumps. Tierod sleeves/Cognito braces.17x9 Moto metals_______ Old Truck ,04 Z-71/Turbocharged,/cam/stall/Zippy Built TRANS/Nelson Tuned------

  9. #9
    Join Date
    Apr 2005
    Location
    belton, tx
    Posts
    747
    Definitely louder. But in a cool way. Not obnoxious.
    2013 2wd Z71 6.2 crew cab

    Old Truck: '04 Chevy crew cab stroked/bored 6.0 to 408ci. forged internals, patriot 68cc stage 3 heads (11.1:1cr), comp 244/246 .600 115lsa cam, 3000 yank tc, built 4L60E, walbro 255, 60# mototron injectors, pacesetter lt's 4" single no-cat exhaust

    best time 12.93 1/4 mi @ 103 in the turbo truck.

    1968 Camaro Convertible, super sweet!

  10. #10
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Yeah, my boss says mine sounds RUDE&#33; LOL
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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