5.0

fairly significant
Typical Repair Cost:
$420
Average Mileage:
71,650 miles
Total Complaints:
2 complaints

Most Common Solutions:

  1. replace alternator (2 reports)
2014 GMC Sierra 1500 electrical problems

electrical problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2014 GMC Sierra 1500:

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

2014 GMC Sierra 1500 Owner Comments

problem #2

May 042018

Sierra 1500 3.2L V6

  • Automatic transmission
  • 67,000 miles

A D V E R T I S E M E N T S

Truck voltmeter was always at 14.0v, while driving dash analog voltmeter went to 12.5v. Went to local repair center and they said diagnostic said alternator failed. They changed alternator, three days later again dash voltmeter went to 12.5v, used handheld voltmeter across battery while running and also read 12.5vdc. When you first start truck alternator would output 14.3vdc (hand held voltmeter across battery) after 5 minutes would go to 12.5vdc.

Auto repair installed another alternator, good 14vdc for three days. Then again first start up 14v, after 5 minutes across battery with VOM 12.5vdc. Removed negative lead for 10 minutes, restarted truck, alternator output 14vdc for four days around 240 miles. After 240 miles again startup 14.v, 5 minute running 12.5vdc. Again disconnected neg. battery terminal, again fixed for 200 miles. As usual dealer has no fix and looks at me like i am crazy.

- richbee098, Long Beach, US

problem #1

Dec 112017

Sierra 1500 Z71 5.3L V8

  • Automatic transmission
  • 76,300 miles

Disclaimer: not fixed yet; estimate is from NTB. Would not expect a 2014 GMC w/ 76,000 miles to have this issue. Definitely my last GMC.

- Nathan T., North Richland Hills, TX, US

Not what you are looking for?