8.0

pretty bad
Typical Repair Cost:
$1,500
Average Mileage:
68,000 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. replace fuel pump and fuel pump modulator (1 reports)
Get free help with your lemon!
close ad
2018 GMC Sierra 3500 fuel system problems

fuel system problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2018 GMC Sierra 3500:

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

2018 GMC Sierra 3500 Owner Comments

problem #1

Aug 142024

Sierra 3500 Denali 6.6L Duramax

  • Automatic transmission
  • 68,000 miles

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

I have never had a diesel truck and we have owned many Ford and Dodge need a replacement at 68,000 miles. So disappointing for a GMC truck and this is the first GMC diesel I have purchased probably will not ever purchase another GMC.

- Julie B., New Port Richey, US

Not what you are looking for?