Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


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 engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2007 GMC Sierra 2500:

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

2007 GMC Sierra 2500 Owner Comments

problem #1

Apr 292007

Sierra 2500 4WD 8-cyl Diesel

  • Automatic transmission
  • 650 miles


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

Not what you are looking for?