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  1. General Discussion
    (Sorry in advance for the long post but any opinions/help would be greatly appreciated). I recently picked up a 2006 GMC Sierra 2500HD with an LBZ engine. Truck is 100% stock besides a 4” MBRP exhaust in its current state. Bought the truck needing a fuel pressure regulator because the truck was...
  2. 04.5-05 LLY Duramax Powertrain
    Hey guys , I have a 2005 GMC LLY . I was out hunting for about 6 hours creeping through the bush . When I put it in park the truck all of a sudden jumped to 1000 or so rpm with a loping / surge , similar to a high idle. As soon as I press on the brake it goes back to a normal idle with minimal...
  3. 01-04.5 LB7 Duramax Powertrain
    So i just did all new injectors in my lb7. Got it back together and its loping real bad. After i give a little throttle the loping goes away but at an idle its aweful. So I checked for leaks, nothing. Wont hold a prime either. So i just got off the phone with this diesel mechanic at tires plus...
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