5.3

fairly significant
Typical Repair Cost:
No data
Average Mileage:
44,150 miles
Total Complaints:
3 complaints

Most common solutions:

  1. dealership replaced radiator (3 reports)
Get notified about new defects, investigations, recalls & lawsuits for the 2015 GMC Sierra 1500:

Unsubscribe any time. We don't sell/share your email.

problem #3

Apr 012021

Sierra 1500 5.3L

  • Automatic transmission
  • 49,000 miles

Well I guess I'm part of the club now..... 50k miles on GMC 1500 and yup, I have a Radiator leak. Small but noticeable.

It is clearly an issue. GMC has put out a notice on it and the 2014 GMC 1500 have a recall/fix on it. Unfortunately, the dealer say the 2015's aren't part of the fix.... "NOT ENOUGH COMPLAINTS" really?

Pretty disappointed in GMC. It's a known problem and they are still are unwilling to fix it.

I filed my Complaint with the National Highway Traffic Safety Administration. Hope others will follow... this is an expensive fix... Manufacturing defect. I'll attach some info for others.

- Eric M., Temecula, CA, US

Comment Disabled Add Complaint
problem #2

Dec 152017

Sierra 1500 Denali 6.2L V8

  • Automatic transmission
  • 80,778 miles

Kept smelling coolant burning, level dropping. GM found a notice saying to replace radiator. Must have been the 20th time the truck has been in the shop.

- dcarri, Calgary, AB, Canada

Comment Disabled Add Complaint
problem #1

Jan 302015

Sierra 1500 SLT 5.3L V8

  • Automatic transmission
  • 2,672 miles

I have owned this vehicle for 8 weeks and it has been in the shop for 4 weeks.

- monkeyboy, Calgary, Alberta, canada

Send Comment Add Complaint