Two problems related to frame rust have been reported for the 2003 GMC Sierra. The most recently reported issues are listed below.
Brake line rusted through, 1 month later a second brake line rusted through. Massive rust on frame and bumpers as well.
I got a new 2003 GMC Sierra 1500 the front bumper start to show rust in under 4000 miles then I got oil change the mechanic call me and told me that my brake are solid rust both front ones the frame is rusting all over the place at 10000 the steering column knuckle near the steering box is solid rust and he says it is very dangerous to have that rusted so bad I have sent 4 emails to GMC about it and go to marina GMC in san leandro where I got it from they told me that all of them are rusting and they not going to do any thing about it.
| Tailgate Hinge problems | |
| Frame Rust problems | |
| Body problems |