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Code:2509 Please help

1407 Views 12 Replies 6 Participants Last post by  BlueBeastCTD4x4
2509: ECM/PCM power input signal intermittent. What does that mean guys? It happens after I clear codes before start up, also it's every first start up of the day w/the dash lighting bolt. Please help thx guys.
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9 out 10 times it's a bad battery.
 

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You either have a weak battery or one of the battery connections is corroded. I had mine replaced after 1 year.
 

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Are you sure? Because I thought these batteries are suppose to last longer than 3 yrs.
Good luck on that one. Most only last a little over 2. I had to replace both this fall. A word of advice replace as a set.
 

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AC Delco makes some real good ones. I believe they are 850 CCA. Check yours first unless you already did. Let us know if that is your problem. How many miles are on your truck? Thay fall under the 3/36 warranty.
 

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I got the cheap one from walmart and it fixed my 2509. And Walmart also has a 3 year replacement warranty and a 108 month pro-rated warranty...hard to beat!

I think you'd be hard pressed to find many 07's with good factory batteries, they're junk!
 

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I had the same exact problem. Replaced my batteries with 2 new interstate batteries and the problem went away. Both my old batteries tested fine with the volt meter but the truck didn't like them.
 

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Discussion Starter · #11 ·
AC Delco makes some real good ones. I believe they are 850 CCA. Check yours first unless you already did. Let us know if that is your problem. How many miles are on your truck? Thay fall under the 3/36 warranty.
Just an update. Swap out the old batteries and truck works fine now i guess that was the problem. Voltage on old battery tested fine but i guess it was just to old. I bought the Kirkland brand from Costco w/850 crank start $75 each.Thanks guys for all your help.:thumbsup:
 

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That's a good price on batteries. Glad to see you have the problem fixed:thumbsup:
 
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