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.


fairly significant
Typical Repair Cost:
No data
Average Mileage:
125,000 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
2004 GMC Sierra 1500 cooling system problems

cooling system problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2004 GMC Sierra 1500:

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

2004 GMC Sierra 1500 Owner Comments

problem #1

Oct 202009

Sierra 1500 SLE 5.3L

  • Automatic transmission
  • 125,000 miles


GM legally got their liability limited on their marvelous invention DEXCOOL. They say it was limited to only a few models and a few engines. I say horsepuckey! Maybe to them that's true but I beg to differ. The gaskets on the waterpump are leaking antifreeze. It is for now a very minor drip. I work with someone who just repaired his. We both had discussed it being the actual waterpump but after looking into it closely we found the weep holes to be bone dry and the leak coming from the gaskets between the pump and block. Another fine piece of GM engineering!

- , Kansas City, MO, USA

Search for these popular complaint phrases...

Not what you are looking for?