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2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

100,000 mile spark plug change

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Old August 1st, 2014, 8:30 AM
  #21  
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Here are the specs and a link to a thread talking about tune ups...
https://chevroletforum.com/forum/tah...07-5-3l-63215/



Spark Plug Wire Resistance
397-1,337 ohms

Spark Plug Torque
15 N·m or 11 lb ft

Spark Plug Gap
1.02 mm or 0.040 in

Firing Order
1-8-7-2-6-5-4-3
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Old August 1st, 2014, 10:43 AM
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Is that the correct firing order? If so when did they change from 1-8-4-3-6-5-7-2?
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Old August 1st, 2014, 5:34 PM
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Originally Posted by BW56
Is that the correct firing order? If so when did they change from 1-8-4-3-6-5-7-2?
Yes sir, 1-8-7-2-6-5-4-3 is straight out of the manual for a 2007 5.3L flex fuel engine. Its possible it changed when they went with the AFM engine
Attached Thumbnails 100,000 mile spark plug change-5.3-firing-order.jpg  
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