Code P0700. - Chevy and GMC Duramax Diesel Forum
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Old 12-04-2007, 08:47 AM   eBay Motors  #1 (permalink)
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Code P0700.

My '02 dmax is throwing a code P0700. What does that mean or is there a list where I can look it up?

Thanks.
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Old 12-04-2007, 09:13 AM   eBay Motors  #2 (permalink)
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P0700 is the TCM requesting a MIL (Malfunction Indicator Light aka: "check engine"). All the 700 code does is tell the ECM "something's wrong" and to illuminate the MIL. There is another code in the TCM that you need to pull that will actually tell you what the malfunction is so let me know what that code is and I will help you out.
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Old 12-04-2007, 09:37 AM   eBay Motors  #3 (permalink)
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Bryan@ATS Diesel.

In the mean time I had the tranny serviced. I just checked for codes again and there weren't any.
Thanks for your reply.
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Old 12-04-2007, 09:41 AM   eBay Motors  #4 (permalink)
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You need to use a different scanner then. I guarantee there is another code in the TCM. Use either a GM Tech II scanner or EFI LIVE to get that code.
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Old 12-04-2007, 11:55 AM   eBay Motors  #5 (permalink)
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I have had the 0700 code before also. It has been awhile since i had it, could i still scan it with a tech II and retrive what my problem was or how long will it stay in the memory. My service engine light is no longer on.
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Old 12-04-2007, 12:05 PM   eBay Motors  #6 (permalink)
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Depends on how long ago it was. The ECM will store the code after the MIL has gone off for 120ish key cycles before it will delete it so like i said, it depends on how long ago it was.
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Old 12-12-2007, 08:25 AM   eBay Motors  #7 (permalink)
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I just returned from the GM dealer. They checked for trouble codes and didn't find any in the engine or transmission.
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Old 12-12-2007, 09:27 AM   eBay Motors  #8 (permalink)
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I recently had that code come up and should be the tranny slipping enough to put the truck in a limp mode. I went to Autozone cuz they will scan codes for free and then I had him erase it.
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Old 12-12-2007, 10:58 AM   eBay Motors  #9 (permalink)
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Quote:
Originally Posted by Woodie View Post
I recently had that code come up and should be the tranny slipping enough to put the truck in a limp mode. I went to Autozone cuz they will scan codes for free and then I had him erase it.
Hey Woodie, your in my neck of the woods (Boise). The 700 code is a tranny code as stated above. Most likely also a limp code because of tranny slip. I can check your codes for you to see what really is going on.

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Old 06-13-2010, 10:04 PM   eBay Motors  #10 (permalink)
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I had this code as well, truck would not shift gears but still drove at high way speeds, was stuck in 4th, so i pulled over and cleared it, a few days later it happened again but it came with a P0807 Clutch Pos Sensor Circ Lo, I think that was the code but not sure it could have been something different, is this me slipping my tranny, I assumed it was and backed my tune down but I'm scared to through the tranny, I have only had the truck a week. I am going to get a diff tranny I think.
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