2025 Chevrolet Silverado 1500: Po6dd code reduce power to 35 mph
Common wear/failure (not a recall)
Symptoms
Owners of the 2025 Silverado 1500 report: po6dd code reduce power to 35 mph. CarComplaints.com lists 1 owner complaints, average mileage 3,050 miles.
NHTSA has 56 owner complaints for the 2025 Silverado 1500 in this area. Examples:
- NHTSA complaint ODI #11770044 (filed 10/09/2026): “The contact owns a 2025 chevrolet silverado 1500. the contact stated the engine was knocking at initial start-up. the contact informed the dealer and confirmed that the vehicle was not under recall. the contact decided not to take the vehicle to the dealer. th…”
- NHTSA complaint ODI #11770061 (filed 10/09/2026): “On july 4, 2026 while driving with my family up a two lane state road headed to the lake cruising 55mph the engine blew and locked up with no warning, no check engine light or anything causing me to almost wreck and leaving me and my family stranded in a dange…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: oil pressure control valve, replaced engine wire harness (1 reports). Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Pro
Internal engine work (lifters, oil consumption, fuel dilution diagnosis) requires engine teardown or dealer software/tests. (Our assessment.)
Cost
No sourced cost range: get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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