Six problems related to radiator have been reported for the 2018 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 GMC Sierra 1500 based on all problems reported for the 2018 Sierra 1500.
47,012 miles radiator failure, leaking badly. Gm denied repair under warranty.
At 55000 miles the radiator started too leak gm would only pay 250. 00 dollars of the 876. 00 it cost.
The radiator is leaking coolant without any real cause and I was told the entire radiator needs to be replaced.
The contact owns a 2018 GMC Sierra 1500. The contact stated that a coolant smell would emit from the vehicle upon exit. The contact also stated that his vehicle had began to lose coolant at an abnormal rate and had to be frequently replaced. The contact took the vehicle to mcconnell automotive (3150 dauphin st, mobile, al 36606) where they confirmed that there was a crack in the radiator which resulted in a coolant leak. He was also informed that there was no recall on the VIN and that the warranty did not cover the repair. The manufacturer was notified of the failure and provided the same information as the dealer. The vehicle was not repaired. The failure mileage was approximately 42,000.
I have had my GMC Sierra 1500 for almost 3 years. I have a little under 59,000 miles on the truck. A few thousand miles ago a tech at the gm dealer let me know that they had to add some coolant and it was something I should keep an eye on. I brought the vehicle back to have them look into it. They let me know that the radiator has a small leak. It is not big enough to have fluid hit the ground in my garage but it is loosing fluid. I looked online and saw that this is a common issue. I was told that it was not covered under warranty and it would cost a good amount to fix. I have had this vehicle for under 3 years and have had 5 issues without any of them being covered by warranty. This vehicle seems to be a lemon.
Tl the contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at various speeds, the temperature gauge indicated that the vehicle was overheated. No warning light was illuminated. The vehicle was taken to beck & masten Buick GMC north (11300 fm 1960 west, houston, TX 77065, (877) 380-8433) where it was diagnosed and determined that the radiator was leaking coolant and that the radiator needed to be replaced. Coolant was refilled in the vehicle. The dealer contacted the manufacturer for assistance with repairs. The failure mileage was approximately 47,000.