2012 GMC Sierra 1500: Excessive oil consumption
Common wear/failure (not a recall)
Symptoms
Owners of the 2012 Sierra 1500 report: excessive oil consumption. CarComplaints.com lists 7 owner complaints, average mileage 60,850 miles.
NHTSA has 14 owner complaints for the 2012 Sierra 1500 in this area. Examples:
- NHTSA complaint ODI #11022752 (filed 09/11/2017): “When the vehicle is at 50 60 or any speed - the tachometer jumps and the car surges feels like it going to stop…”
- NHTSA complaint ODI #10681960 (filed 02/07/2015): “The fuel injection pump cp4 had a catastrophic failure as i was driving on a heavily traveled four lane highway, us rt.20. i lost power steering and brakes. i felt fortunate that i was not towing a 16,000 lb. fifth wheel camper down a mountain road.i say this …”
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: replace oil pump valve cover (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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