I reset the ecu on my truck by holding the battery cables together for 10 seconds, but now my truck won’t start, any suggestions?
697 příspěvků · Připojeno 2018
Reset takes more than ten seconds, try ten minutes
2008 Silverado LT 1500 2WD 5.3 4 speed automatic
2013 Buick Enclave Premium AWD 3.6 automatic
Tazz1936 Discussion starter
9 příspěvků · Připojeno 2018
I held the battery cables together for 10 seconds, but I’ve tried to do key relearn procedure which I left in on position for 10 minutes but security light was still on and truck still didn’t start.
697 příspěvků · Připojeno 2018
Connect your cables together for 10 minutes. 10 seconds is not long enough
2008 Silverado LT 1500 2WD 5.3 4 speed automatic
2013 Buick Enclave Premium AWD 3.6 automatic
Tazz1936 Discussion starter
9 příspěvků · Připojeno 2018
I’m trying to figure out why it’s not starting now, I’ve tried doing the key relearn procedure, but the security light stays on, never goes off
19029 příspěvků · Připojeno 2012
OK, back up and tell us what was happening before the no start!
Paprsek
’09 Avalanche LTZ — 5.3 — 4×4 — Černá
Tazz1936 Discussion starter
9 příspěvků · Připojeno 2018
It was idling very high, so I cleaned the throttle body and replaced the idle air control, but it was still idled high, so we tried resetting the ecu thinking maybe it would relearn the idle air control and smooth out the idle.
19029 příspěvků · Připojeno 2012
OK, and then you disconnected the battery and touched the cables together?
Paprsek
’09 Avalanche LTZ — 5.3 — 4×4 — Černá
Tazz1936 Discussion starter
9 příspěvků · Připojeno 2018
Right I disconnected the battery touched the cables together for 10 seconds, then I tired doing the key relearn procedure but the security light stays on and truck still not starting
19029 příspěvků · Připojeno 2012
OK, before you tried the key relearn, what happened? You reconnect the cables and.
Why did you try the key relearn?
I’m asking, because so far I haven’t seen any reason for a security trip.
Paprsek
’09 Avalanche LTZ — 5.3 — 4×4 — Černá
Tazz1936 Discussion starter
9 příspěvků · Připojeno 2018
It was starting before I touched the cables together, but since then it just turns over, it has gas in it.
19029 příspěvků · Připojeno 2012
Let’s talk about «start» .
Does it crank the engine and just not fire;
Or, does just do nothing except light up the dash bulbs?
Paprsek
’09 Avalanche LTZ — 5.3 — 4×4 — Černá
Tazz1936 Discussion starter
9 příspěvků · Připojeno 2018
The engine turns over, it’s firing, if it does start it shuts off immediately
239 příspěvků · Připojeno 2018
Were there any little ‘sparkles’ during your reset procedure?
Tazz1936 Discussion starter
9 příspěvků · Připojeno 2018
Yes when i connected the battery to the cables.
1397 příspěvků · Připojeno 2017
What you did should not have called for a key relearn. I’m thinking you have a coincidence problem here. I do not believe the two are related.
So, when you try to start, the engine will start, but immediately die and the security light is flashing?
If this is the case, the resistance in the key switch area is not delivering the proper resistance to the computer to turn off the passlock system and allow the engine to run. You can do the relearn process which you can find in a Google search, I don’t remember the exact steps. IIRC, you are suppose to do this relearn process 3 times in a row to get the system to remember the resistance reading, in the past, I have has to do the relearn procedure 4 or 5 times in a row to get it to remember. If you are good with a DVOM and a soldering iron, you can permanently disable the passlock system. There are several good wright-ups on how to do that on Google as well.
2005 Cadillac Escalade ESV
6.0 AWD 152K miles
Previously Owned Suburbans;
1999 GMC 2500 Suburban
1997 1500 5.7L 4×4 3″ lift 35″ tires
1990 1500 5.7L 4×4 6″ lift 35″ tires
1988 K2500 Parts Only
1983 c2500 6.2L 4×2
1983 K20 6.2L 4×4
1991 1500 5.7L 4×4
1967 C10 Currently in long term restoration process
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