9.7

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
650 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2007 GMC Sierra 2500 cooling system problems

cooling system problem

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2007 GMC Sierra 2500 Owner Comments

problem #1

Apr 292007

Sierra 2500 4WD 8-cyl Diesel

  • Automatic transmission
  • 650 miles

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

The contact owns a 2007 GMC Sierra 2500. The contact stated that the vehicle's coolant is constantly low. The warning light indicated a low coolant level. The dealer diagnosed the cause of failure as the O ring missing from the fly wheel housing coolant. The dealer repaired the vehicle, however, the low oil indicator light illuminated. The dealer diagnosed the cause of failure as an oil filter leak. The seals and oil filter were replaced. When the contact picked up the vehicle, he noticed an oil leak. The vehicle has not been repaired. The current mileage is 4,000 and failure mileage was 650.

- Sioux Falls, SD, USA

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