2020 GMC Sierra 1500: recalls and problems

Engine2026-09-24

While slowly accelerating from a stop, with 4 family members in the truck, the engine began to run rough for about 1-2 seconds then multiple notifications flashed across the dashboard (check engine, steering assist is reduced-drive with care, service esc, and service parking brake). the road we were on was steep and twisty and did not have room to pull over which put us in an unsafe position with compromised steering

Unknown Or Other,Engine,Fuel/Propulsion System2026-09-19

Vehicle: 2020 gmc sierra 1500 slt vin: 3gtu9del5lg340438 engine: 6.2l v8, rpo l87 mileage: approximately 129,854 miles my 2020 gmc sierra 1500 equipped with the l87 6.2l v8 experienced an engine failure and has been diagnosed as needing an engine replacement. i am reporting this because my vehicle is equipped with the same l87 6.2l engine currently being investigated by nhtsa under engineering analysis ea25007 for en

Power Train,Electrical System,Engine2026-09-15

5/5/25 woke up back seat entire truck flooring soaking wet back glass cracked. 4/8/25 transmission went out 117,000 miles 7/3/25 exhaust leak and placed nox 1. 7/8/25 127551 mileage exhaust leak replace gaskets, belt , tensioner, and pulley, 6/8/2025 3 knock sensors replaced and replaced intake manifold.

Power Train2026-09-14

Transmission shifting hard in first few gears and only 87,000 miles on transmission.