2015 GMC Sierra 1500 Transmission & Power Train Problems
NHTSA component category: POWER TRAIN · data through 07/12/2026
Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
How power train ranks on this vehicle
Share of the 712 complaints citing each category; one complaint can cite several. Full breakdown on the 2015 GMC Sierra 1500 overview page.
What owners report
“THE GMC SIERRA HAS A TERRIBLE VIBRATION FROM 70 - 80 MPH. IT HAS BEEN IN THE SHOP 7 TIMES OVER THE LAST YEAR, 9…”NHTSA complaint 10958560 — filed 03/03/2017
“THE GMC SIERRA HAS A TERRIBLE VIBRATION FROM 70 - 80 MPH. IT HAS BEEN IN THE SHOP 7 TIMES OVER THE LAST YEAR, 9…”NHTSA complaint 10958559 — filed 03/03/2017
“I BOUGHT THE VEHICLE NEW IN 9/2015. I REPORTED A VIBRATION BETWEEN 75-80MPH TO THE NEARBY GM DEALER (TWICE). THE DEALER KEPT THE TRUCK FOR…”NHTSA complaint 10956962 — filed 02/25/2017
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Power Train complaints by year filed
Frequently asked questions
Does the 2015 GMC Sierra 1500 have transmission & power train problems?
Power Train is the #2 most-reported problem area on the 2015 GMC Sierra 1500: 94 of 712 complaints on file (13.2%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2015 GMC Sierra 1500 have in total?
712 complaints were on file with NHTSA as of 07/12/2026. Across all categories, 23 involved a crash, 9 involved a fire, 11 reported injuries, and none reported deaths.
What does NHTSA's power train category include?
NHTSA groups complaints about the transmission (automatic or manual), driveline, axles, transfer case and related parts under a single component category called POWER TRAIN. This page reports that category as NHTSA defines it.
