Still no SES Light
Thread Starter
Joined: Jan 2004
Posts: 1,082
Likes: 1
From: Fayetteville, NC
Still no SES Light Its been almost 3 weeks since my LS6, LTs, !Air, !Egr, install and still no light. I put over 170 miles on the car and the day before the install I had my NC Inspection done and no problems. Car runs real good, no problems at all. Any thoughts on why I havent had a light. Anybody else ever have this happend. I just want to make sure my car will be fine when I do my tune.
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Verdad Gallardo Thread Starter
Joined: Jan 2004
Posts: 1,082
Likes: 1
From: Fayetteville, NC
Still the same thing it'll do the bulb test on the SES sometimes. Like I said i can run a diagnostic on my laptop and everyting comes back ok. But I cant even make it throw a code. I trie unplugging MAF, TB sensor, etc, still no light
12 Second Club
Joined: Mar 2005
Posts: 1,498
Likes: 0
From: Corpus Christi
you should only need to turn key to run and SES should be on. once the engine is started the SES light turns off about a sec later. I wouldn't worry about it if it does come on with key turned to run but engine not running.... as for the fast tb I would say it had to be tuned for that or the guy removed the bulb....
Staging Lane
Joined: Oct 2008
Posts: 70
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From: DALLAS TX
take it to a chevy/pontiac dealer and have them flash the pcm from tis2web. this will restore its stock programming and eliminate the pcm tuning as a possible cause. they probably wont charge much to do it.