Print this page


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
45,064 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.

2003 Chevrolet Suburban engine problems

engine problem

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

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

2003 Chevrolet Suburban Owner Comments

problem #5

Sep 142011

Suburban 8-cyl

  • 153,221 miles


I was driving my Suburban when a message reading "reduced engine power" came on and my car cut off. I was very lucky to only be going 20 mph in my neighborhood. Had I been going faster and had a car been following close behind, we would have caused an accident. This problem still persists and stops every 2-3 miles. We have to pull over, leave the car off for 5-10 seconds and then restart. We are then able to go another 2-3 miles. This is our only vehicle so we have no choice but to drive with our hazards on because we have 4 kids at 3 different schools to drop off and pick up each day. After researching this issue online, I am seeing that this is occurring in hundreds of Chevrolet and GM cars. It is my understanding that these 2 are the same company. I do not dare get on a major highway or interstate because of the fear of the car shutting down and causing an accident. Chevrolet and GM are aware of this problem, as many people have filed complaints with both the company and the NHTSA. Why is there no recall to fix this? this is a very dangerous situation and could likely lead to a deadly accident. I am discussing a class action lawsuit with a number of people and once the info is collected, I will contact an attorney. Please help get these unsafe vehicles off of the road and into the dealerships to be fixed. Thank you.

- Columbia, SC, USA

problem #4

Nov 282009

Suburban 4WD 8-cyl

  • miles
2003 Chevy Suburban 1500 4WD 5.3L GM has a known issue with the heads on these vehicles with the 5.3L engines. The company (castech) who made the heads let them go with a defect that allows coolant to leak into the motor. GM has a tsb on it as well #06-06-01-019B it can cause possible overheating due to coolant loss, as it leaks into the engine it creates rough idle and a slight missfire which will damage the converter sometime in the future. They know about this defect and should be forced to replace these heads with different ones. The only way to correct this issue is to replace the heads with another company.

- Niagara Falls, NY, USA

problem #3

Mar 292007

Suburban 4WD 8-cyl

  • Automatic transmission
  • 67,000 miles
When starting the vehicle the oil is out of the valves causing it to sound like a diesel motor. Therefore needing to leave the vehicle running for at least 15 minutes before you should put it into gear.

- San Jose, CA, USA

problem #2

Apr 152005

Suburban 4WD 8-cyl

  • Automatic transmission
  • miles
Consumer owns a 2003 Chevrolet Suburban. He took vehicle to dealer at least seven times since April. When the vehicle turns over it just does not start. He came back from myrtle beach, and while driving on the interstate at 80 mph when the vehicle shut down and stalled. He managed to coast off the interstate, it then started back up with one attempt. He traveled about 150 miles and the vehicle stalled again and it started back, this time it started and was running a little rough. The consumer took vehicle to the next exit and found a dealer who told him that he could make it back to Ohio if he did not drive it very fast. The dealer told him that it was the fuel filter that was not able to handle the pressure. He drove back at 55 mph, and the vehicle did not shut down. The next morning he took vehicle to dealer in farris Ohio where he bought the vehicle. The dealer changed the ignition switch, the fuel pump, and something he thinks is called a ubeck. He was frustrated that he seemed to spend too much time at the dealer instead at home.

- New Phillidelphia, OH, USA

problem #1

Nov 222003

Suburban 4WD 8-cyl

  • Automatic transmission
  • 5,100 miles
Oil pump failure with only 5,000 miles on engine. GM wants to extend warranty and leave it at that. With no oil circulation internal engine damage possible and reliability/safety/trustworthiness of engine in question. Want GM to replace motor but they want me just accept extended warranty and go away. As a consumer I believe that I should not have to accept the risk of further engine failure and want a replacement based on substantial impairment and value impairment as well as substantial loss of use (been in repair 18 days since February).

- Windsor, CT, USA

Not what you are looking for?