I purchased a 1999 2500 Suburban with the 454/4L80E. I've been trying to figure out a weird rattle or pinging I've been hearing so I picked up an adapter and the app.
No codes were found but it shows this when you run a system test:
Sent from my SCH-I535 using Tapatalk
No codes were found but it shows this when you run a system test:
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Sent from my SCH-I535 using Tapatalk
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