No SES light after LT install

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May 30, 2006 | 01:44 PM

Beastofa327

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From: Virginia Beach, Va

No SES light after LT install

I left my back O2 sensors plug in at the harness but put a rubber cap over the ends. I'm wondering if nothing is sensed on them that they won't throw a code or the light. Any insight?

May 30, 2006 | 01:46 PM

TXsilverado

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From: Humble Texas

my ses didnt turn on until about 3000 miles. then it would pop every other start. it will come eventually

May 30, 2006 | 01:47 PM

Nick™

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From: Red Stick, La

if it's not turned off in the tune it might take a few days sometimes before it throws the code.... don't worry, it'll be annoying you with a bright yellow light shortly

May 31, 2006 | 02:02 PM

Beastofa327

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From: Virginia Beach, Va

LOL I got in the truck and left work shortly after writing this thread and you's where right it came on. mine took 46 miles to come on. Oh well

Jun 6, 2006 | 09:03 AM

Beastofa327

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From: Virginia Beach, Va

Light went off??? was running 93* now 87* I'm guessing I still have a thrown code though.

Jun 6, 2006 | 07:29 PM

CNE

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Unless something is done within the pcm to prevent it from running the O2 diagnostics, it's going to set the code when it sees no activity from the rears.