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  1. Replies
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    2009 gmc c5500

    hey Guys,

    TCM is bad on my 2009 Bucket truck gmc topkick.

    the original service number was 25978353 A50

    the new one i got service number 24256861 is an acdelco t14 replacement

    the...
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    What is the gm service number of the r.r. pcm(if...

    What is the gm service number of the r.r. pcm(if it still on there)? Most truck based operating systems from 2003 to 2005 should work with this pcm to get you started. You may will have go in...
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    Couple of things for you, you cannot load in...

    Couple of things for you,

    you cannot load in a 512k tune into a 1024k box, on your engine do you have electronic throttle or mechanical? The pinouts are the same as far as fuel and spark, there...
  4. The crankshaft position (CKP) sensor signal...

    The crankshaft position (CKP) sensor signal indicates the crankshaft speed and position. The CKP sensor circuits are connected directly to the powertrain control module (PCM) and consists of the...
  5. CKP System Variation Learn Procedure

    CKP System Variation Learn Procedure

    1. Install a scan tool.
    2. Monitor the powertrain control module (PCM) for DTCs with a scan tool. If other DTCs are set, except DTC P0315, refer to...
  6. are they making it hard to tune to conform with...

    are they making it hard to tune to conform with emission laws?
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    info fuse is for your onstar system.

    info fuse is for your onstar system.
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    what about decreasing torque limits for brake...

    what about decreasing torque limits for brake torque managment? Would that be what you are looking for, just a suggestion.
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    1,685

    I upgraded from vista to windows 7 haven't had...

    I upgraded from vista to windows 7 haven't had any problems, did ya try reinstalling drivers or it won't?
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    did a avay with a 5.3l, it likes 16.5 afr...

    did a avay with a 5.3l, it likes 16.5 afr commanded, netted around 23 - 25mpg depending on driving conditions. Owner about shit since it was getting 16 - 18 LOL .. these are highway of course.
  11. Replies
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    I have a 1mb pcm running lean cruise... if you...

    I have a 1mb pcm running lean cruise... if you have the tables then it is in there. Just download the patch to enable those tables
  12. I had that problem in my s10 when I converted...

    I had that problem in my s10 when I converted from a vortec box to a 0411, just turned off everything related to the alt f term, since I had no f term wire from the alternator. No more batt light...
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    Straight from gm's service manual.

    Engine Compression Test

    Charge the battery if the battery is not fully charged.
    Disable the ignition system.
    Disable the fuel injection system.
    Remove all the spark plugs.
    Block the...
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    It may be possible that the head gasket is...

    It may be possible that the head gasket is breaking down slowly, they did this on my duramax, I started noticing the coolant system was still pressurized when it was stone cold, then slowly started...
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    check the spark plug for cracks, hell even...

    check the spark plug for cracks, hell even replace it 15,000 miles is a short period but I have seen ones bad, I have had to replace them at 10,000 on my truck when I had the supercharger on. If...
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    injectors are pretty easy to swap, the o rings...

    injectors are pretty easy to swap, the o rings shouldn't get trashed as long as you lube them up good. here is a write up from gm's serivice manual on how to remove them.
  17. http://www.popularhotrodding.com/tech/0407phr_bosc...

    http://www.popularhotrodding.com/tech/0407phr_bosch_oxygen_sensor_tech/index.html

    here is an article on those types of sensors for people that don't know like me LOL .... to anwser your question I...
  18. on my s-10 2000 when I converted to the 1mb pcm I...

    on my s-10 2000 when I converted to the 1mb pcm I used the old o2 sensors that are case grounded. I am noticing however, while in cl, the a/f will spike to 13.5 while lean cruise is enabled, but...
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    I was speaking of vats relink, sorry should have...

    I was speaking of vats relink, sorry should have specified, as far as flashing goes I usually keep doors closed and flash away, unless an aftermarket radio is installed then pull the radio fuse. I...
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    I also leave the door open too, so that the delay...

    I also leave the door open too, so that the delay off shuts off as soon as the key is turned to the off position, not sure if that is tied to the pcm circuits, but I took no chances when doing things...
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    change to the 411, my truck shifts so much...

    change to the 411, my truck shifts so much better, and plus I can access the lean cruise stuff to help with gas mileage.
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    your commanded afr will change to what you are...

    your commanded afr will change to what you are commanding. If it stays at 14.63 lean cruise is not activated.
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    No prob, :welcome:

    No prob, :welcome:
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    Okay I got it, PCM Pin 9 is KS signal dark...

    Okay I got it,

    PCM
    Pin 9 is KS signal dark blue
    Pin 49 is KS 5V Reference

    On KS Connector
    Pin A is KS Signal dark blue
    Pin B is KS 5V Ref.
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    I seem to remember 11 and 51 on the blue pcm...

    I seem to remember 11 and 51 on the blue pcm connector, but let me confirm this once I get back to the truck
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