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pretty bad
Typical Repair Cost:
Average Mileage:
106,700 miles
Total Complaints:
9 complaints

Most Common Solutions:

  1. not sure (5 reports)
  2. replace knock sensor (2 reports)
  3. change 1-2 solenoid (1 reports)
  4. repair/ground wiring (1 reports)
2003 Chevrolet Silverado engine problems

engine problem

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2003 Chevrolet Silverado Owner Comments

problem #9

Apr 242018

Silverado LX 5.3L V8

  • Automatic transmission
  • 109,500 miles


My 2003 Silverado "Check Engine" light came on while driving it on the 24th of April. So I was going to get me a new battery and started to go to Walmart to get another one when a message I never saw before. It had "REDUCE ENGINE POWER" I was not about to stop till I got it home. It would barely run 30 miles per hour.

After I got it home I thought for about 18 hours on it and prayed for an answer on how to fix it. I remember that I had a Dodge one ton years ago and the gauges went wild and it was a loose ground wire, so I checked my ground wire and it seemed ok.. but I added another one from the engine to the body and went in side and started it. YEA! IT RAN GREAT AND NOW I CAN DRIVE IT AND IT DON'T POWER OUT ON ME.

SOOO all of you guys that have a lot of codes (like I had) and an a "REDUCE ENGINE POWER" light that comes on, please give it a try, make sure the wire is long enough that when the engine moves that there is enough wire that it will not come undone!

Happy wiring;)

Update from Apr 27, 2018: I FIXED IT, SIMPLE FIX. After studying it out for a while, I remembered that some years ago I had a Dodge p/u and the gauge's went wild just like my Chevy. It was all messed up, so I looked under the hood (on the Dodge) and I found the ground wire broken, so I fixed it and it was all I needed (on the Dodge) so I made another ground wire for my Chevy and hooked it to my fire wall and to a good spot on my engine (on the Chevy) and it FIXED IT

Update from Jul 26, 2018: Ok, my engine ran for a couple of days and then it completely quit, no fire no gas the engine will turn over but it will not start and after I try to start it again it won’t even make a noise until I turn the key off for about 30 to 60 seconds then it will turn over but again it will not start. I put a new battery in it about a week before it started to act up, please anyone please help

- Charles S., Terlton, US

problem #8

Sep 122016

Silverado LS 5.3L V8

  • Automatic transmission
  • 166,000 miles

I took the Silverado to Autozone and had them check why my check engine light came on and they said my OBD2 sensor had been disconnected. Any help or suggestions about this?

- Jonathan L., Huntsville, AL, US

problem #7

Sep 122016

Silverado LS 5.3L V8

  • Automatic transmission
  • 166,000 miles

Engine light came on as i was driving down the parkway and i pulled off to the side and popped the hood and there was a fast knocking noise coming from the left side of the engine. It wasn't very loud but it was noticable. Any suggestions?

- Jonathan L., Huntsville, AL, US

problem #6

Sep 302009

Silverado LS 5.3L V8

  • Automatic transmission
  • 123,333 miles


My 03 1500 engine light is on has been on since i bought the truck in 09. i was told it was a oxygen sensor because it is making the engine rough. The dashboard says the battery charge is low and wont turn the truck on but i find this not to be true because the engine would want to turn over it just sounded like it wasn't getting enough fuel. I don't know what is wrong

- Jared P., Paw Paw, IL, US

problem #5

May 052009

Silverado 5.7L

  • Automatic transmission
  • 71,000 miles


- Robert D., Sidney Center, NY, US

problem #4

May 192010

Silverado 1500HD 6.0L V8

  • Automatic transmission
  • 58,409 miles

Bought the truck used. Washed entire unit before fully enjoying it. Washed the engine, not with a pressure washer, only running water. Two days later CEL (Check Engine Light) was on. ODBII Code was P0332 (Knock Sensor Bank 2 low signal). Reset CEL. Two days later CEL back. GM has a TSB out about corrosion problems on this sensor due to bad design. Water gets in and and can not get out, then corrodes only the back sensor. It is recommended to replace both since one has to completely remove the intake to get to them. They are screwed into the top of the the engine below the intake manifold. GM also recommends replacing the wiring harness since everything is open. Then, to put things back together one needs also replacing the intake plenum gasket. This seems to be a common problem with this vintage Chevy's/GM' all size motors and models.

On this truck though the motor still seems fine - no rough idling or knocking. Engine seems a little sluggish though. I know the previous owner and this truck was always babied....

- johnb., Edmonton, AB, Canada

problem #3

May 012009

Silverado 1500 4.8L

  • Automatic transmission
  • 53,000 miles


Check Engine light came on, I went to Auto Zone to get the codes read. 2 codes, each was around the 1-2 shift solenoid.

I checked it out and felt comfortable enough my 1-2 shift solenoid failed, I bought one from the dealership for about $25, plus 5 quarts tranny fluid.

I did change this myself, on my driveway on a creeper. I went to school for auto maintenance about 15 years ago so I was fairly comfortable doing this.

Well it fixed the problem, but when going out to test drive my son went to roll up his passenger window and it went up but has stopped working and is making a bunch of noise when you try to move it.

Give me a F(&*ing break, this P/U has about 55,000 miles on it and after reading there's a ton of problems with these window regulators it really pisses me of even more.

I'm GLAD GM is going to have to file bankruptcy. What a bunch of arrogant pricks. Junk vehicles with no loyalty to their customers.

I bought this P/U new and I told myself I was going to keep this P/U forever and even put a new engine in it once it wore out. By the looks of it this thing could end up nickle and diming me to death. I'm gonna fix this window and the next failure I have I'm gonna look for a different used P/U.

No wonder Toyota is eating GM's lunch. Good for them.

- Jason B., West Fargo, ND, US

problem #2

Mar 022009

Silverado 1500 4x4 Ext Cab LB V8

  • Automatic transmission
  • 145,000 miles

At about 45,000 miles, my truck started this. The Engine light came on and it would start stalling. Every traffic light, stop sign, while turning, etc. I have had it stall in the middle of traffic.

IT has been to mulitple mechanics, dealerships, and the light. I am always told the computer doesn't find anything, and they would change some sensors. I always get it back no engine light on, and then a mile or two later the light is back!

This is my biggest complaint with my truck. It is dangerous and a pain in the ass.

- Cliff M., Baltimore, MD, US

problem #1

Nov 062007

Silverado 2500 HD 6.0L

  • Automatic transmission
  • 68,000 miles

I have a 2003 Chevy Silverado with a 6.0 engine and automatic transmission and the engine light came on. I put a scanner on it came up with the code po332B Knock Sensor 2 circuit low frequency. I need to know where the sensors are so I can change them out or check any wiring problems. Let me know how I can fix the problem before it becomes a problem. Right now there is no knocking in or around the engine that I can tell and seems to run well.

- jrueben, Tooele, UT, US

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