I have a 2003 Chevy Silverado and the battery not charging light blinks even though I have replaced the alternator and have had all tested and works fine,I also realized my radio no longer cuts off automatically when I shut off and open the door. Is the PCU bad

170

Asked by wcswannjr Dec 03, 2014 at 06:54 AM about the 2003 Chevrolet Silverado 1500 Extended Cab LB 4WD

Question type: Maintenance & Repair

Changed Alternator and had all tested, also radio now dose not shut off automatically

9 Answers

63,145

Try this. It should reset the ECU. Disconnect the battery for about a half hour. It's worth a shot.

6 people found this helpful.
56,550

Make sure ALL of your connections are clean and tight at the battery and alternator. That none of the wires are nicked, cut, corroded, melted or broken. As far as the radio not turning off when you open the door, does the dome light come on when you open the drivers door? Will the radio turn off when the passenger door is opened?

8 people found this helpful.
170

Yes the dome light and everything else is good and no the radio has to be shut down manualy now. Also now I see at idle that the

10 people found this helpful.
170

wow I see at idle that the motor bogs down and the volts go to 11-12 just for 1-2secs every 6-9 mins.

7 people found this helpful.
56,550

Sounds like the new alternator is no good. If you got it at Autozone or someplace similar they are usually not very good. However even a good brand can be bad out of the box from time to time. Go have the alternator and battery tested at an Autozone for free.

3 people found this helpful.
200

My avalanche 2003 has the bateri no charging I change the baterie and the alternator,clean all grounds but still the light is blinking please help me with it Thank you

20 people found this helpful.
190

I am having the identical problem with my 2003 Chevy Silverado- found any solution yet?

19 people found this helpful.
20

Same issue with my 04 silverado. Turned out to be a bad pcm

2 people found this helpful.

Your Answer:

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 123,229 nationwide Silverado 1500 listings starting at $1,999.

ZIP:

Own this car?

Share your experience with others.

2003 Chevrolet Silverado 1500

Review another car

CarGurus Experts

  • #1
    Rowefast
    Reputation
    10,510
  • #2
    John Carson
    Reputation
    9,680
  • #2
    Andrew Olsen
    Reputation
    9,680
View All

Know more, shop wisely

Search

Related Models For Sale

Used GMC Sierra 1500
1,891 Great Deals out of 72,257 listings starting at $1,900
Used Ford F-150
6,458 Great Deals out of 169,176 listings starting at $1,871
Used Chevrolet Silverado 2500HD
1,016 Great Deals out of 40,369 listings starting at $2,495
Used Toyota Tundra
1,044 Great Deals out of 31,821 listings starting at $2,999
Used Dodge RAM 1500
76 Great Deals out of 1,407 listings starting at $650
Used Chevrolet Tahoe
1,332 Great Deals out of 34,727 listings starting at $1,550
Used Toyota Tacoma
2,176 Great Deals out of 55,904 listings starting at $3,995
Used Chevrolet Colorado
1,012 Great Deals out of 31,573 listings starting at $2,795
Used GMC Sierra 2500HD
543 Great Deals out of 24,583 listings starting at $3,995
Used Ford F-250 Super Duty
1,288 Great Deals out of 51,787 listings starting at $2,905
Used Chevrolet Camaro
655 Great Deals out of 8,355 listings starting at $3,240
Used Chevrolet Corvette
793 Great Deals out of 14,532 listings starting at $4,999

Used Cars for Sale

2024 Chevrolet Silverado 1500 For Sale
285 Great Deals out of 29,056 listings starting at $25,435
2023 Chevrolet Silverado 1500 For Sale
500 Great Deals out of 5,364 listings starting at $19,975
2022 Chevrolet Silverado 1500 For Sale
589 Great Deals out of 6,853 listings starting at $20,950
2021 Chevrolet Silverado 1500 For Sale
521 Great Deals out of 7,077 listings starting at $12,885
2020 Chevrolet Silverado 1500 For Sale
398 Great Deals out of 4,708 listings starting at $13,540

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.