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Showing results for tags 'reduced engine power'.
Found 2 results
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First time posting here, I’ve got a 2008 gmc 2500 6.0l, very very long story short I did a variable valve timing delete , mild summit cam, headers and injectors, I’ve had this thing to the tuner a dozen times and when the truck is running it runs like a bat out of hell but that’s only when it’s not going into reduce engine power randomly, I’ve replaced the wiring that goes to the throttle position sensor , the Throttle position sensor twice, gas pedal. My tuner can’t seem to help and he’s a reputable intelligent guy, if I could figure out how to control the 6l90 transmission I’d do a carb swap on this thing………… the only thing I’ve been able to figure out is when I’m driving down the road and it goes into reduce power I’ll pull over and relieve the fuel pressure by pushing the schrader valve on the fuel rail and it comes out of reduce power every time, I don’t know if that has anything to do with my problem ? Fuel pressure 60psi.
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Hopefully you guys can help me out here a bit. I have a 2014 Silverado CCSB Z71 5.3 with 38000 miles on it. I was driving to work this morning and had the reduced engine power alert come up in my DIC along with the stabilitrak light. I pulled over, shut the truck off and re-started a few times with no success in clearing the codes with drive cycles. While driving, the transmission was banging gears pretty hard and the torque converter was clunking worse than "normal, by GM standards". I got to a good spot to park the truck and that is that for now. I am anticipating a tow to the dealership as I am about 20 miles away from it now for what will hopefully fall under the powertrain warranty as my bumper to bumper was up 1 months and 2k miles ago. Anyone have a similar problem with this or any insight as to what it may be. Im iffy on driving it home to scan it, as I dont want to compound any problems. I drove the truck Saturday night, probably 60 miles on the highway with no issues and it sat in the garage until this morning. Help me out, internets!
