Diagsheet

2020 GMC Sierra 1500 · symptom sheet

Power steering cuts out or goes heavy

  • 25owner reports
  • 17,000median miles
  • 0involved a crash

Newest report Jun 8, 2026 · checked Sep 9, 2026

37 of the 457 complaints on this car are about the steering system. 25 of those describe power steering loss.

Tick what matches of 25 reports

3
18
4
2
10

What got replaced

Owners who name the part that was replaced mention the EPS motor or module (3 reports).

Recalls and investigations

No recall on the steering system covers the 2020 model year as of Sep 9, 2026.

When it happens

The middle half of failures fell between 3,000 and 50,000 miles, from the 11 reports that gave a mileage.

420
321
222
223
224
925
326

What owners wrote

“My extended warranty expired. I got my oil changed at valvoline and then 2 days later my power steering stopped working and I’m getting multiple dash messages of other systems malfunctioning. Did gmc cause this to get me to come back to their service center. It seems very suspicious”

Filed Sep 2, 2025

“Loss of power steering. Loss of engine propulsion at high rates of speed. Engine would not start.”

Filed Jun 3, 2025

“While driving, the power steering (electronic) failed. Driver Info Center gave no waring until the system failed. After failure the DEC gave a warning to "Service Poser steering".”

Filed Jan 2, 2024

“Normal driving conditions vehicle decelerated and warning lights and notification appeared. Warning were ‘Service ECS’ and ‘Steering Assist is reduced Drive with care’. Shut off vehicle for 30 minutes and warnings were no longer present and vehicle drove normally. Happened again 24 hours later. Received email notifications from GMC to arrive within one day. This was a know recall of the previous model year.”

Filed Jan 16, 2023

Should you keep driving it?

This page can't tell you that. 0 of 25 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.

File your own report with NHTSA. Complaint counts are how a problem gets an investigation.

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