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  1. R

    LB7 Possible sensor issues

    OOPS! Thanks for the correction.
  2. R

    LB7 Possible sensor issues

    What tool are you using to get those readings? Our trucks use 5V for all of the engine sensors, and a ground, and sometimes a return from the sensor. MAP measures pressure at the intake, MAF measures density of the charge going to the turbo. BARO measures atmospheric pressure. Boost is a...
  3. R

    Reduced Engine Power

    Strange. Your ECM really needs this MAP information
  4. R

    Six Speed Leaking Down?

    Check your trans fluid level. Make sure the spin-on is sufficiently tight
  5. R

    LML lash after build

    .012 cold is very likely close to .010 hot
  6. R

    shift inhibit message

    Some info for you
  7. R

    300k on transmission fluid

    Have you changed the spin-on filter? Looked at the fluid to see how dark it is ? My inclination is the change it.
  8. R

    no crank no start

    What powers the 86 terminal on the relay? That is the question. See the attachment Charm Manuals for Chevrolet vehicles | Operation CHARM
  9. R

    Emergency brake problem

    Customer arrives at a shop with coolant pouring out of the radiator. Asks what will it cost to get this fixed? Well, the shop says, $200 to diagnose and then the cost of the radiator and labor on top of that. Seems like this is getting to be standard operating procedure for many places and...
  10. R

    2001 Silverado lb7 security light and drivers door latch

    The COM system in our trucks, in one aspect, is like older Christmas tree lights - if one goes out, they all go out. So one electrical truck device can screw up the communication for all the devices. That one device COULD be the BCM, or a broken wire supplying communications or power or ground...
  11. R

    2001 Silverado lb7 security light and drivers door latch

    See the attachment. Better to be safe than sorry.
  12. R

    EGR vent port leak.

    Slightly different info, but showing how the valves seat in the EGR.. Motor protrudes too far to permit closing?? I'm wondering if your valve ever actually fully closes?? Can you monitor the EGR position with your scanner?
  13. R

    Best way to remove a canopy by myself

    I do mine with a slight modification to the tie rope around the Leer. After the restraining clips were removed, I placed 2 2x4s under the Leer, one near the front and one near the back, with eye bolts outside the Leer. Be careful because the Leer can slip off the boards. One solution is to put...
  14. R

    2017 GM 6.2 injector replacement

    P124C definitly a circuit problem. I'd make very sure it wasn't internal to the injector before doing a lot of work Perhaps some help from this video Source: https://youtu.be/lmoP01UMDYA
  15. R

    2001 Silverado lb7 security light and drivers door latch

    Has this been resolved? Communication between all modules, including BCM?
  16. R

    15767604 LB7 Cooling system lower panel (behind bumper; funnels air into stack)

    There must be many of these in the junk yards. Here is what they come on : 6.6L turbo diesel. Without rear ac, 2500. 8.1L gas. Type 1, 3/4 ton. 4.8, 5.3 & 6.0L. with heavy duty.
  17. R

    2001 Silverado lb7 security light and drivers door latch

    Any time I have severe battery problems, I disconnect both battery positive cables, or both negative cables, and charge each battery at least overnight, depending on the charger amps. Longer if la ow-amp charger is used. Then I confirm the charge level independently. If both batteries are in the...
  18. R

    EGR vent port leak.

    From the attachment When the ignition is turned ON, the ECM will drive the EGR motor worm gear out with just enough force to touch the EGR valve stem. The ECM will do this 3 times in quick succession. This action determines the minimum closed position of the valve and only happens once per...
  19. R

    A/C Experts Needed

    Some auxiliary info for you to consider
  20. R

    Reduced Engine Power

    I can't find those DTCs anywhere. Maybe wrong prefix?
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