Glow plug problem? - Chevy and GMC Duramax Diesel Forum
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Old 12-29-2010, 04:09 PM   eBay Motors  #1 (permalink)
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Glow plug problem?

03 gmc 2500hd duramax lb7, my batteries were low so i charged them then i started truck 6hours later and the check engine light came on..checked it p0380.. and now when i start the truck no mater if its hot or cold the glow plug light comes on and it starts funny like it revs alittle idles at 850 for a few sec. then drops to 750 and is fine..
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Old 12-30-2010, 03:48 AM   eBay Motors  #2 (permalink)
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had it plugged in last night and the glow plugs still came on? never has before! this truck is a cali emmision so im guess from what ive read oline i have have bad glow plugs?
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Old 12-30-2010, 05:34 AM   eBay Motors  #3 (permalink)
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I would try installing new glow plugs theyre only 11$ a peice i believe, just to be safe
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Old 12-30-2010, 06:33 AM   eBay Motors  #4 (permalink)
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not a 911 problem..
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Old 12-30-2010, 09:48 AM   eBay Motors  #5 (permalink)
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now the truck starts and runs fine???? im gonna do batteries 1st if not that i hear gm covers the glow plugs for 10yr 200k miles so if it needs glow plugs they will do them and gm will pay.
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Old 12-31-2010, 09:06 AM   eBay Motors  #6 (permalink)
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I don't believe the glow plugs are covered under that warranty... I think you are thinking about the injector warranty and that was 7rs/200,000 miles and most trucks are past the 7 year mark now.

Since you said you had a battery problem first, I think that your batteries are not holding their charge well enough and the voltage drop is messing with your glow plug controller. I am guessing you probably still have original batteries. Replace them.

If your problem persists, replace the glow plugs. They are cheap and you can do them yourself.
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Old 12-31-2010, 05:28 PM   eBay Motors  #7 (permalink)
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i read on this forum the glow plugs have a 200k 10yr warranty.
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Old 12-31-2010, 05:59 PM   eBay Motors  #8 (permalink)
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they are not i believe i called my local gm dealer and they said they wont even warranty my injectors to 200k or glow plugs? soo..
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Old 01-02-2011, 05:04 AM   eBay Motors  #9 (permalink)
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they are not i believe i called my local gm dealer and they said they wont even warranty my injectors to 200k or glow plugs? soo..
huh they messin with you, cuz the injectors r 7year 200k and glow plugs 10yr 200k i confirmed with my dealer about the injectors cuz mine are giving me starting trouble but i was 6mo pass the 7yr. cuz my truck was built i guess in 2002.5.. as far as the glow plugs there is an 1-800# u can look up to call on this forum.. i was told the lb7 are covered for 10yr 200k. maybe theyre tryin to dick u around??
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Old 01-02-2011, 09:42 AM   eBay Motors  #10 (permalink)
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huh they messin with you, cuz the injectors r 7year 200k and glow plugs 10yr 200k i confirmed with my dealer about the injectors cuz mine are giving me starting trouble but i was 6mo pass the 7yr. cuz my truck was built i guess in 2002.5.. as far as the glow plugs there is an 1-800# u can look up to call on this forum.. i was told the lb7 are covered for 10yr 200k. maybe theyre tryin to dick u around??
my truck was made in 07/01 and its classified a 01? but im gunna call gm directly and not try to go through the stealership , but thanks because i need new glow plugs in starts way to hard
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