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Ottowood

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2015.5 Silverado LTZ 3500 SRW Stock truck
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#2 ·
What are you trying to accomplish? You have codes or messages?
Turn the pump on with the scan tool and pressure should hit 70.
DEF is not used for regeneration.
 
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Ottowood

· Registered
2015.5 Silverado LTZ 3500 SRW Stock truck
Joined
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1,349 Posts
#4 ·
Clear codes and run a system tamper service bay test. If the codes don't clear then what are they?
 
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