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99 GMC Sierra 1500 4x4
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Discussion Starter · #1 ·
Hello-
I bought my son a 99 GMC SIERRA 1500 5.3l Everything seems to be going wrong-
We need new spark plugs and wires and I have no clue what to get. Hoping y’all could help us out. Thanks!
 

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Plug your VIN in here:


After you do that, type in "spark plug" in the part search box next to the vehicle description. Then select "spark plug" and "spark plug wire set" and click on "Display Parts" on the right. The screen will now show you ignition wire sets that depend on the numbers written on the coils. Have your son get the numbers off the coils and match it to the right one here.

What seems to be wrong with the truck? Does he have access to a scan tool or code reader to properly diagnose this thing?
 
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2015 GMC Sierra 1500 4x4 leveled and 2015 GMC Sierra 1500 2wd lowered.
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204 Posts
Owner's manual, specifications section. Or go to rockauto.com and put in your make, model, engine, and drive-line. Also, AC Delco has a rebate program going on right now. I got $3 back on each Iridium plug.
 
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