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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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  • Similar Content

    • 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.
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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.
      Well, the "highway" include GGB (Golden Gate Bridge).🤣
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            And caused extremely high pressure in EGR system, too much exhaust injected into intake manifold when EGR is open, caused ECM think EGR have problem, light MIL and sending code 32.
      Fired chip in ICM (ignition control module )
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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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          Engine Oil= normal pressure, enough, just changed (incl. filter);
          Trans. oil= enough, just changed(incl. filter);
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      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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