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19 Silverado TrailBoss V6:

Several times now the truck stalled out when in park and idling. I try to restart and it turns over but won't start, take the key out and try again a couple minutes later and it works but the check engine light is on. 

Prior to this starting, last week while driving 60mph on highway the truck shuddered/shook a few times and the check engine light came on. 

OBD reads out P16AF & P16A7 as the error codes. 

Dealership said they ordered a new part...anyone having issues like this?

Also, still no fix on the backup camera glitching out. Someone is gonna get hurt and GM has been made aware and I filed it with NHTSA. No fix yet...

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    • By Tom_1991
      When traffic light turns green, I kicked the throttle pedal, finally, this time, I got the power that a 454 supposed to give me, I almost cried.
       
      =======
      1994 Chevy Suburban Silverado K2500
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      =======
      Months ago, I posted several topic (2 or 3) about it stall and knock sound under the floor, while cruising on highway.
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      Fired chip in ICM (ignition control module )
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      =======================================================
       
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    • By Tom_1991
      Golden Gate Bridge, what a perfect place to have your vehicle stalls on.  😂😂
      ========================
      This is not the 1st time it stalls, see:
      94' 454 stall while driving and knock sound under the cab
      ========================
      Before this fault down, I have changed the fuel pump (thanks to <riverbanks>), the original one is weak, I can easily block the fuel pipe with thumb, I think it is almost fail. Changed a new one, very strong, I can't block the fuel pipe with thumb.
      ========================
       
      Model= 1994 Chevy Suburban K2500 Silverado
      Engine= 454 TBI
      Transmission= AT
      Fault down des. :
          Location= Veterans Blvd. tunnel NB, Golden Gate Bridge(GGB) NB, Alexander Ave. NB, Calif.;
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          Coolant temp.= around 210(heated up), normal operation temp., enough;
          Engine Oil= normal pressure, enough, just changed (incl. filter);
          Trans. oil= enough, just changed(incl. filter);
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              Inspection at home : OBD scanner get DTC 54 and 32.
      =====
      Current status=sounds like intake or exhaust jammed, and power is weak; when drive next to a wall or something, can hear the sound like bleed pressure of a tire, this sound can't be heard when the vehicle is not moving.
       
      I gonna check ignition system, incl. distributor, coil, spark plugs and wires, to check if there are any bad contact, but I suspect bad contact can't cause this problem.
       
      I am afraid one more thing have broken while on GGB .😂😂
       
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