NHTSA Complaint #11678624 — 2020 CHEVROLET SILVERADO 1500

ENGINE issue reported to NHTSA

Check any vehicle history by VIN - Free vehicle history report

Complaint Details

ODI Number 11678624
Vehicle 2020 CHEVROLET SILVERADO 1500
Component ENGINE
Date of Incident
Date Filed
Mileage N/A miles
Crash No
Fire No
Injuries 0
Deaths 0
Vehicle Towed No
State UT

Consumer Description

After three oil leak repairs in my LM2 3.0 diesel engine in my 2020 Chevrolet Silverado RST, you would think that would be enough to repair the manufacturer's defects, but it wasn't. I think the saying is fourth time is the charm? The third repair which was a second oil pan lasted a whopping 48 hours before leaking. This time it ended up being the timing chain cover that was leaking. Again, the service advisor mentioned that these are known to leak too due to a defect from the manufacturer. I even got a call from the service manager, and he said that anything area that could and does leak oil on these LM2 engines has been replaced and/or repaired, so I should be good for the future. I called into GM as per their instructions to update them on the fourth oil leak, and where the repairs were taking place. Fast forward to nearly two months later, and no one from GM attempted to contact me, and Jill stated that the case was closed and wouldn't disclose why. The only thing she could do was open another case. I declined since GM couldn't be bothered to address the issues they know they have in the LM2. The dealership the work was done in, the service advisors, the service techs, and the service manager all discussed in great detail the issues Chevrolet is having with the 3.0 diesel engine. GM knows this and refuses to address this. At this point, my vehicle spent 37 days in 2.5 months at the dealership fixing oil leaks that at any time could have caused engine failure and resulted in a crash. This truck is our dedicated family vehicle as my wife and I each daily Subaru WRX's. GM has done nothing and will do nothing. Someone needs to issue recalls to address the oil leak issues with the LM2 before it results in someone's death. I wish I wouldn't have wasted time contacting GM. I should have filed these complaints and got legal representation for the Magnuson-Moss Warranty Act. **NO loaner vehicle was given during the entire 37-day repair duration.**

Related Complaints for the 2020 CHEVROLET SILVERADO 1500

Other ENGINE Complaints

#11717786 Lifter failure in 2020 Silverado 5.3 engine causing loss of power while driving.
#11717170 Engine failed on interstate while pulling my RV. Almost had a bad wreck due to this happening. This is the known 6.2L...
#11716867 We own a 2020 Silverado with a 6.2L L87 engine… I am aware of open investigation # EA25007… Our vehicle had sudden ...
#11716155 On September 27, 2025 while driving to my nieces soccer game my 2020 Silverado Traill Boss LT started losing power wh...
#11715382 To Whom It May Concern, I am writing to formally file a complaint regarding my 2020 Chevrolet Silverado 1500 Diesel ...

Recent Complaints for the 2020 CHEVROLET SILVERADO 1500

#11719749 FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING Brakes lock up on vehicle while driving Must turn vehicle off and restart several times to disengage brakes. This h...
#11719749 SERVICE BRAKES Brakes lock up on vehicle while driving Must turn vehicle off and restart several times to disengage brakes. This h...
#11719749 UNKNOWN OR OTHER Brakes lock up on vehicle while driving Must turn vehicle off and restart several times to disengage brakes. This h...
#11719237 POWER TRAIN Rear wheel lock at speed up due to failed valve body and transmission
#11719242 STEERING In several situations, I have lost partial or complete power steering ability. Once, while driving, I recieved a SERV...
Check any vehicle history by VIN - Free vehicle history report