P1351- Use/Make a new Key!
January 23rd, 2016, 4:16 PM
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P1351- Use/Make a new Key!
My old school classic style 2000 GMC quad cab 4wd, vortec 350, GMC does not have a chip in the key, so I never thought of this!
I got that code out of the blue and couldn't get rid of it or get the truck reliable, so, like every other person on any thread anywhere has done with a P1351 code, I replaced just about everything on the truck - coil, battery, ignition control module, complete distributor, plugs, wires, starter, voltage regulator/alternator, crank sensor- everything except the BIG computer...and that was next!
Even looked for shorts in the wiring and patched up a few frayed spots. After and intermittently in between each of the 20 things I fixed/replaced the 'Service Engine Soon' light would go off and come back on after each repair or 10-20 starts in between each repair... Mechanic after mechanic.... money after money... tow fees...
UNTIL last night, when an old master said he recommended I try a new key, the original key if possible. So I went home, got the original key, put it in, SES light went out. Got a new key made at the home depot and used it all day. All appears well after driving it all day and intentionally starting it 30 times during the day.
He said that it has something to do with the built in security system-- if the key is worn, and after 15 years it IS, mine so worn I could pull it out of the ignition with the truck running (and I liked that because I farm and I didn't have to restart the truck after getting out and getting back in after unlocking and opening 3 gates a day...6 times a day!)
If it's worn it doesn't always hit the tumblers right and if it doesn't hit the lock tumblers right you can crank and crank but the security system won't fire the cylinders... or for sure it won't fit right every time, and so it prevent cranking intermittently, never knowing when that will happen. EVEN IF you don't have a chip in your key, it does have some type magnetic operation about the tumbler connection that trips or doesn't trip that start-up security system, and a worn key won't hit right and trip or untrip the security system right every time.
SO......Took original key and had new key made. Did notice that the original key and the new key will not pull out of ignition like my old key did, and so far, so good, Mystery solved for me. This time.
I got that code out of the blue and couldn't get rid of it or get the truck reliable, so, like every other person on any thread anywhere has done with a P1351 code, I replaced just about everything on the truck - coil, battery, ignition control module, complete distributor, plugs, wires, starter, voltage regulator/alternator, crank sensor- everything except the BIG computer...and that was next!
Even looked for shorts in the wiring and patched up a few frayed spots. After and intermittently in between each of the 20 things I fixed/replaced the 'Service Engine Soon' light would go off and come back on after each repair or 10-20 starts in between each repair... Mechanic after mechanic.... money after money... tow fees...
UNTIL last night, when an old master said he recommended I try a new key, the original key if possible. So I went home, got the original key, put it in, SES light went out. Got a new key made at the home depot and used it all day. All appears well after driving it all day and intentionally starting it 30 times during the day.
He said that it has something to do with the built in security system-- if the key is worn, and after 15 years it IS, mine so worn I could pull it out of the ignition with the truck running (and I liked that because I farm and I didn't have to restart the truck after getting out and getting back in after unlocking and opening 3 gates a day...6 times a day!)
If it's worn it doesn't always hit the tumblers right and if it doesn't hit the lock tumblers right you can crank and crank but the security system won't fire the cylinders... or for sure it won't fit right every time, and so it prevent cranking intermittently, never knowing when that will happen. EVEN IF you don't have a chip in your key, it does have some type magnetic operation about the tumbler connection that trips or doesn't trip that start-up security system, and a worn key won't hit right and trip or untrip the security system right every time.
SO......Took original key and had new key made. Did notice that the original key and the new key will not pull out of ignition like my old key did, and so far, so good, Mystery solved for me. This time.
