Real ChatGPT answer · index seedGVedUGAfBsMcompleteAutomotive · trucks and SUVsinformational

What are the most common OBD2 diagnostic trouble codes related to emissions failures on modern GMC Sierra diesel trucks?

ChatGPTgpt-62 queries11/1/2026
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The searches the AI actually ran for this prompt.

SEED QUERY
What are the most common OBD2 diagnostic trouble codes related to emissions failures on modern GMC Sierra diesel trucks?
2 real searches · 1 real-search pass
GMC Sierra Duramax common emissions diagnostic trouble codes P20EE P207F P204F P2463 NOx sensorGoogle ↗
OBSERVEDReason
GM Duramax service bulletin P20EE P207F P204F emissions Sierra 6.6L 3.0LGoogle ↗
OBSERVEDReason

Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

Query classes

Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

ChatGPT real searches (2)
Short factOther / navigationalComparisonConsequenceReason100%DefinitionInstructionYes / no

Classes come from the query-classifier (a local Laya model). 2 of 2 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.

Searches and sources

ChatGPT2 real searches · gpt-6
GMC Sierra Duramax common emissions diagnostic trouble codes P20EE P207F P204F P2463 NOx sensor Google ↗
GM Duramax service bulletin P20EE P207F P204F emissions Sierra 6.6L 3.0L Google ↗

Queries

2 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
GMC Sierra Duramax common emissions diagnostic trouble codes P20EE P207F P204F P2463 NOx sensor
OBSERVED
Google ↗
AI Mode ↗
—Reason——1x
of 1
GM Duramax service bulletin P20EE P207F P204F emissions Sierra 6.6L 3.0L
OBSERVED
Google ↗
AI Mode ↗
—Reason——1x
of 1