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hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
49,466 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 Silverado 3500 engine problems

engine problem

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2003 Chevrolet Silverado 3500 Owner Comments

problem #4

Oct 292007

Silverado 3500 8-cyl Diesel

  • Automatic transmission
  • 100,900 miles


October 2006 I received this letter from Chevrolet. We want you to know that the fuel injectors in some 2003 model year Chevrolet Silverado vehicles, equipped with a 6.6L duramax diesel engine, may require replacement because of high fuel return rates due to fuel injector body cracks, or ball seat erosion, or high pressure seal extrusion. Symptoms of these conditions include illumination of service engine soon (ses) light, low engine power, hard start, and/or fuel in the crankcase. This is not a recall. Do not take your vehicle to your Chevrolet dealer as a result of this letter unless you believe that your vehicle has the condition as described above. What we have don: General Motors is providing owners with additional protection for the fuel injectors. If this condition occurs on your 2003 Chevrolet Silverado within seven (7) years of the dateyour vehicle was originally placed in service or 200,000 miles, whichever occurs first, the condition will be repaired for you at no charge. On 29 October 2007 my wife took the 2003 Chevrolet Silverado equipped with a 6.6L duramax diesel engine to the Chevrolet dealer the injector leaking. The truck engine warranty was void and I was charged $2218.63 for the repair and the Chevrolet customer service representative told me they were denying it due to the excessive mileage. The truck had 108,880 miles on it and should be with in the additional protection letter. My invoice had note has banks 6gun system on truck. Engine warranty void! the banks manufacturer told me that any equipment that was installed does not effect the fuel injectors and it was already a problem that General Motors had sent in the letter in October 2006. I asked for some kind of diagnosis information or other proff that the banks system caused the problem and was denied any information.

- Woodruff, SC, USA

problem #3

Aug 242007

Silverado 3500 4WD 8-cyl Diesel

  • Automatic transmission
  • 68,966 miles
Measuring tip of oil dipstick loose. Likely to fall off and be sucked into oil pickup.

- Sun City, AZ, USA

problem #2

Aug 012004

Silverado 3500 4WD 8-cyl Diesel

  • Automatic transmission
  • 28,000 miles
I purchased a 2003 Chevrolet Silverado duramax in 4/04 used with 21,020 miles. At about 28,000 it started to smoke upon acceleration. This is a very thick blue smoke. The dealer has looked at it twice and says they cannot find anything wrong. But I think if I have to get it checked for emissions that it would fail miserably. It now has approx. 45,000 miles but is still covered with an extended warranty to about 72,000.

- Corbett, OR, USA

problem #1

Mar 142005

Silverado 3500 8-cyl Diesel

  • Automatic transmission
  • miles
While the vehicle was parked the driver noticed a brownish liquid leaking from underneath the vehicle. The driver took the vehicle to the dealer, and the mechanic determined that the filter and other parts needed to be replaced due to corrosion. (the VIN number entered per consumer, did not match the vehicle given)

- East China, MI, USA

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