I think my ECU is failing?

Asked by Duncan Aug 25, 2020 at 02:52 PM about the 2003 Chevrolet S-10 LS Crew Cab 4WD

Question type: Maintenance & Repair

List of symptoms in my 2003 Chevy s-10 zr5. Suspicious that my ECU is
failing, but wanted a second opinion:

ABS and brake warning lights sometimes on during start-up, sometimes not.
All symptoms are noticeably worse while warning lights on.
Occasional stutter while idling
Engine sometimes seems to "slip" while accelerating, especially uphill
Loss of power
Running the A/C creates additional slips and loss of power, excess
condensation on condensation line. (A/C is charged correctly and blows cold
air)

Anybody seen this before? Suspicious that my ECU is failing and I also may
need to replace my belt and/or my A/C compressor.

2 Answers

40,210

Since the warning lights are on, that means there are trouble codes stored. scan the vehicle for the OBDii trouble codes. Any auto part store can do it for free.

155,355

The ABS and brake warning lights on together are telling us you have a problem with the ABS that's affecting the dynamic stability of the vehicle. The ABS has its own computer and must be scanned for trouble codes when the lights are on. Each time the engine is shut off the ABS computer is cleared. As for the other problems, when was your last tune up? You should get a tune up every 30 months or 30,000 miles on this engine. Hope that helps! Jim

Your Answer:

Own this car?

Share your experience with others.

2003 Chevrolet S-10

Review another car

CarGurus Experts

  • #1
    Andrew Olsen
    Reputation
    9,720
  • #2
    Robert Smith
    Reputation
    3,360
  • #3
    Gene Arnett
    Reputation
    2,810
View All

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Silverado 1500
4,181 Great Deals out of 130,736 listings starting at $1,000
Used Ford Ranger
656 Great Deals out of 12,567 listings starting at $1,650
Used Chevrolet Colorado
927 Great Deals out of 23,411 listings starting at $1,950
Used Toyota Tacoma
2,044 Great Deals out of 33,226 listings starting at $2,990
Used GMC Sonoma
52 listings starting at $6,995
Used Ford F-150
6,177 Great Deals out of 133,339 listings starting at $900
Used GMC Sierra 1500
1,936 Great Deals out of 66,623 listings starting at $1,100
Used Nissan Frontier
765 Great Deals out of 23,155 listings starting at $700
Used Dodge Dakota
18 Great Deals out of 516 listings starting at $975
Used Chevrolet Blazer
751 Great Deals out of 14,431 listings starting at $1,500
Used Chevrolet Tahoe
1,065 Great Deals out of 21,534 listings starting at $1,000
Used GMC Canyon
353 Great Deals out of 10,637 listings starting at $2,995

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.