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LVZ71

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  1. LVZ71
    Did you Flash the transmission tune file along with the 89/87 file from BB?? I originally only loaded the 91+ file and my truck was not shifting very well. Once I realized I needed to Flash the Mod TCM file along with the ECM file all was perfect. My truck has more HP and shifts so much better.
  2. LVZ71
    Yes, your Battery is covered under the bumper to bumper 36,000 mile warranty...I was traveling on vacation last week in San Diego. I went to start my truck and it was dead. I mean click click click...dead. It had shown no signs of trouble before this. I was able to get it jumped started and drove it to the nearest GMC Dealer. I had approximately 34,000 miles on my truck. They tested the truck and replaced my battery with no questions asked! I was very fortunate to be in a big city near a GMC dealer and happy it happened before my warranty ran out!
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