Nice work and the Rainex this is a common problem with these trucks. The GEM goes out causing these issues.
Below is the locations so you can change it out.
Note: When the battery is disconnected and reconnected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven ten miles (16 km) or more to relearn the strategy.
Check out the diagrams (below).
Let us know what happens and please upload pictures or videos of the problem.
Cheers, Ken
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Monday, January 29th, 2018 AT 11:12 AM