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  1. C

    Issues with 06 gmc yukon xl denali

    Has a new key switch and lock cylinder too. And have done that with fuse box we dont want to spend anything else til we know for sure
  2. C

    Issues with 06 gmc yukon xl denali

    Also removed cats
  3. C

    Issues with 06 gmc yukon xl denali

    So we have changed crankshaft position sensor, throttle body, drive belts, checked alternator and battery, cleaned all engine grounds, cleaned all electrical connections and still having the hesitation/stalling with acceleration..... any more ideas? Also checked all plugs and wires
  4. C

    Issues with 06 gmc yukon xl denali

    Does anyone know how to bypass the security system? I'm thinking it may be something to do with that since the "reset works to get it started. When I start down the road it stalls everytime.
  5. C

    Issues with 06 gmc yukon xl denali

    No remote start installed. And anti theft "reset" works everytime it doesnt start even tho the security light isnt on
  6. C

    Issues with 06 gmc yukon xl denali

    Actually we have to do an anti theft reset almost everytime after its stalls....we did replace the key switch and lock cylinder and did the key relearn process but still having same issue
  7. C

    Issues with 06 gmc yukon xl denali

    Ok so worked on the engine grounds. Replaced throttle body done the "relearn" that came with it and still same issue
  8. C

    Issues with 06 gmc yukon xl denali

    I think I'm gonna replace the grounds because I have removed and cleaned connection points. I started the truck and grabbed one of them and the truck shut off...so I cleaned that connection point and seemed to sound better drove down the road and it stalled when starting back up the hill home...
  9. C

    Issues with 06 gmc yukon xl denali

    The battery isnt very old maybe 4 months but has not been holding charge since this started...we had found a stripped bolt to negative battery cable (side post) and replaced both bolts. Have checked and cleaned all grounds that I have found but not sure if I'm missing one. May need to replaced...
  10. C

    Issues with 06 gmc yukon xl denali

    I was driving down a gravel road with my wife and kids in the car. My yukon just straight up died in the middle of driving. Have it hauled to a friends house then start inspecting....all symptoms pointed to crankshaft position sensor so I changed it. So it started up but now it stalls when I hit...

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