fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
12,830 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 GMC Yukon engine problems

engine problem

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2003 GMC Yukon Owner Comments

problem #5

Oct 152006

Yukon 4WD 8-cyl

  • Automatic transmission
  • 53,836 miles


Engine ticking on startup, lasts for 5 minutes currently - longer on cold starts or after letting the car sit overnight. Progressively has gotten louder and longer in duration since reporting the failure last year to the dealership. This piston "slap" noise described appears to be manufacturer defect in 5.3 liter engine where shipment of engines with cylinder heads that are oversized or pistons shipping as undersized is causing warping on piston head, hence the reason why the noise progressivly gets louder and longer lasting as time progresses. Original dealership has documented the report of the noise with no result or attempt to fix. Customer has purchased extended warranty prior to the evidence of this failure, at time of purchase. Several dealerships have directed customer to file a direct complaint with manufacturer as engine has been diagnosed that prolonged wear with the "slap" that is causing the ticking noise will cause serious damage to engine over time. Only suggested recourse is to replace engine with 5.3 that shipped after September 2002 and was not manufactured from one of three GM plants responsible for the manufacture of the defective engines.

- Salt Lake City, UT, USA

problem #4

Feb 192004

(reported on)

Yukon 8-cyl

  • miles
The consumer indicated that GMC manufactured a large number of 5.3 liter engines with either under sized pistons or over sized combustion cylinders which resulted in piston slap. The noise is very loud when the engine is cold but after a period of 10-15 minutes the noise goes away. The consumer indicated that the manufacturer would issue an extended warranty to consumer's who contacted them about this problem. The consumer feels the manufacturer should either replace the engine or repair the problem.

- Waterloo, IA, USA

problem #3

Jan 082004

(reported on)


  • miles
While driving 40 mph vehicle stalled and lost power.

- Oxnard, CA, USA

problem #2

Jul 192003

Yukon 4WD 8-cyl

  • Automatic transmission
  • 10,316 miles
Engine shut down at 65 mph on expressway lose of steering, difficulty with brakes was nearly in an accident trying to get to side of expressway.

- Livonia, MI, USA

problem #1

Jun 022003


  • miles
While driving at California freeway at 55mph and with no warning vehicle shut off, causing consumer to pull off the road.

- Oxnard, CA, USA

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