definitely annoying
Typical Repair Cost:
Average Mileage:
49,696 miles
Total Complaints:
3 complaints

Most Common Solutions:

  1. not sure (2 reports)
  2. new emissions sensor (1 reports)
2003 GMC Sierra 1500 engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2003 GMC Sierra 1500:

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

2003 GMC Sierra 1500 Owner Comments

problem #3

Jan 012010

Sierra 1500 SLT 5.3L V8

  • Automatic transmission
  • 98,000 miles


The check engine light came on, so we brought the truck to our dealership to do a diagnostic test on it, and they told use it needed some kind of emissions sensor

- , Bryant Pond, ME, USA

problem #2

Apr 232005

Sierra 1500 SLE 5.3L

  • Automatic transmission
  • 49,088 miles

Out of warranty and issue starts. Code reads P0442. Clear codes OK for a few days. In the winter no issue and no codes. Could be $ 200+ to check out.

- , Windsor, ON, Canada

problem #1

Jul 112003

(reported on)

Sierra 1500 SLE

  • 2,000 miles

I purchased a brand new 2003 $36,000 Sierra. It has many extras and I would assume there would be few problems. Since I have owned it the check engine light has been coming on over and over again. After a few tries, it was diagnosed as the evaporation system either not having a part made properly or the computer program not reading it correctly. In either case I was told by GMC that there is no fix and that I would have to live with the check engine light on!! I am not happy at all about this, and when I pressed them further I was told "That's the way it is sometimes"!! I payed a lot of money for a brand new vehicle and this my problem?! Also, with the light on all the time, how do I know if there really is a problem. I can not take in the truck to be checked every day. I have a family and do not want to take this vehicle on long trips because I can not be sure it is ok. This is completely unaaceptable!!! How many other people out there are having the same problems?

- , Lake Zurich, IL, USA

Not what you are looking for?