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2005 5.3 pinout/diagram?

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Old 11-27-2010, 04:42 PM
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Default 2005 5.3 pinout/diagram?
I have a 2005 Avalanche 5.3 L59 (flex fuel) engine. I've been able to find wiring diagrams for 2004 Silverado L59 and 2005 Hummer H2 LQ4.
Does the 2005 L59 have the same ecu and TAC pinouts?
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Old 11-27-2010, 09:24 PM
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Here's a bunch of info. Scroll down a few lines and there's a link for the pinout for the 2005.

http://www.lt1swap.com/2000harness.htm
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Old 11-28-2010, 06:35 AM
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Yep, I got the pinouts from his 04 truck list. I was just hoping for confirmation on 05 and TAC wiring.
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Old 11-28-2010, 11:35 AM
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05 uses PCM controlled heater GND for O2 sensors.

Shoot me a PM with email and I can send you the schematics.
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Old 11-28-2010, 11:50 AM
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Thanks!!! email sent.
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Old 04-09-2011, 02:13 PM
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hi all, does anybody have the PCM/ECU/ECM pinout for the 1999 GMC Yukon Denali V8?
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Old 04-09-2011, 05:29 PM
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PM me your email and yr/chassis/engine you need and I will send them to you.
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Old 07-08-2024, 05:26 PM
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Default 05 Silverado 1500 PCM pin out
Originally Posted by aknovaman
05 uses PCM controlled heater GND for O2 sensors.

Shoot me a PM with email and I can send you the schematics.
​​​​​​Could you send me a PCM pin out diagram for 05 Silverado 1500 5.3 by chance?
Last edited by Ram456; 07-08-2024 at 05:27 PM. Reason: Email
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Old 07-08-2024, 06:14 PM
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Originally Posted by Ram456
​​​​​​Could you send me a PCM pin out diagram for 05 Silverado 1500 5.3 by chance?
You quoted a 14 year old thread.
You're lucky he's still around here.
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Old 07-08-2024, 07:15 PM
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That or actually look through the thread, the link was above.

https://www.lt1swap.com/2003to2007schematics.htm
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