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Thread: Looking for a tune / L18 454 4L80E 12212156

  1. #1
    Lifetime Member SS2win's Avatar
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    Default Looking for a tune / L18 454 4L80E 12212156

    I've been looking and can't find a factory stock tune for a 2002 8.1 Vortec with 4L80e AND OS 12212156. Does one even exist?
    2001 Camaro SS #2020
    Stock LS1 w/InconTT | REV Springs | Ti retainers | M6 | McLeod Twin Clutch
    UMI RR K Member | SLP Subframe Connectors | Global West TA | BMR PHB | Metco LCA
    996 Brake Kit| 17" CCW Classics | 17x11 ZR1 Replicas on all four corners

    425@6lbs | ???@12lbs | EFILive Custom OS3 | !MAF | SD
    11.73@12x/1.7 on worn out nittos... yaaawn!

  2. #2
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    GM TIS doesn't seem to be functioning correctly right now, comes back with invalid vin error when I try check any vin for the lastest Cal ID.

    You would need a 2002 Suburban 2500 with the 8.1/4L80E combo.

    I found this vin for that combo 3GNGC26G52G268599

  3. #3
    Lifetime Member SS2win's Avatar
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    Thanks. TIS is working again... that VIN comes back with the OS 12216125. Looks like they didn't use 12212156 in that combo.

    Still interested in getting a 2002 8.1L/4L80e/4x4 tune. everything I'm finding is Allison
    2001 Camaro SS #2020
    Stock LS1 w/InconTT | REV Springs | Ti retainers | M6 | McLeod Twin Clutch
    UMI RR K Member | SLP Subframe Connectors | Global West TA | BMR PHB | Metco LCA
    996 Brake Kit| 17" CCW Classics | 17x11 ZR1 Replicas on all four corners

    425@6lbs | ???@12lbs | EFILive Custom OS3 | !MAF | SD
    11.73@12x/1.7 on worn out nittos... yaaawn!

  4. #4
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    Unfortunately I don't think that combo exists, the 8.1 is DBW and I dont believe any factory calibrations used 12212156 with DBW from GM. 02 Avalanche's had 8.1 + 4L80E + 4X4, but 12216125.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, starting the mods
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  5. #5
    Lifetime Member SS2win's Avatar
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    Makes sense. Thanks!
    2001 Camaro SS #2020
    Stock LS1 w/InconTT | REV Springs | Ti retainers | M6 | McLeod Twin Clutch
    UMI RR K Member | SLP Subframe Connectors | Global West TA | BMR PHB | Metco LCA
    996 Brake Kit| 17" CCW Classics | 17x11 ZR1 Replicas on all four corners

    425@6lbs | ???@12lbs | EFILive Custom OS3 | !MAF | SD
    11.73@12x/1.7 on worn out nittos... yaaawn!

  6. #6
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    They ought to be similar enough though to copy/paste the bits into 12212156 that are relevant to you, yeah? Basically what I'll end up doing if I can get away from house projects back to car projects.
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

  7. #7
    Lifetime Member SS2win's Avatar
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    I was hoping for a factory combination.
    2001 Camaro SS #2020
    Stock LS1 w/InconTT | REV Springs | Ti retainers | M6 | McLeod Twin Clutch
    UMI RR K Member | SLP Subframe Connectors | Global West TA | BMR PHB | Metco LCA
    996 Brake Kit| 17" CCW Classics | 17x11 ZR1 Replicas on all four corners

    425@6lbs | ???@12lbs | EFILive Custom OS3 | !MAF | SD
    11.73@12x/1.7 on worn out nittos... yaaawn!

  8. #8
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    Agreed, just went down the rabbit hole as I'm not super familiar with the Gen VII 8.1s, they share the same firing order as the LS engines so this should be a bit easier after all. I'm assuming since the firing order is the same, the injector order is the same as well BUT double check that.

    You could try using the 12212156 OS, enable DBW, and full flash. Depending what this is going in, start with a Avy 8.1+80E tune and a Silverado HD LQ4+80E 4x4 tune. Copy all the 8.1L engine parameters over including the platform options (enable DBW), then full flash it.

    No factory combo, but with a little "creative" segment swapping and copying of parameters/tables over, should be doable.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, starting the mods
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  9. #9
    Lifetime Member SS2win's Avatar
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    Sure I can make something but I was hoping to find a factory tune for a big block that is 12212156, 4x4 and 4L80e. It doesn't have to be for an 8.1 I just thought that would be a good target. Maybe the L21 ran 12212156 but I can't find that tune either!
    2001 Camaro SS #2020
    Stock LS1 w/InconTT | REV Springs | Ti retainers | M6 | McLeod Twin Clutch
    UMI RR K Member | SLP Subframe Connectors | Global West TA | BMR PHB | Metco LCA
    996 Brake Kit| 17" CCW Classics | 17x11 ZR1 Replicas on all four corners

    425@6lbs | ???@12lbs | EFILive Custom OS3 | !MAF | SD
    11.73@12x/1.7 on worn out nittos... yaaawn!

  10. #10
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    Is there a Mexican tune repository? They had some odd combos that we never saw.
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

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