Who can reprogram a Kelsey Hayes 325 EBCM ?

20

Asked by Jul 29, 2017 at 12:35 PM about the 2001 GMC Sonoma SLS Long Bed 2WD

Question type: Maintenance & Repair

Here is my issue:

About 18 months ago I changed my rear axle ratio from a 4.10 to a 3.08 (2 wheel drive). Knowing the ECM had to be reprogrammed for the axle change, I sent out the ECM for an off vehicle reprogramming. After the reprogramming the speedometer accuracy / driveability is perfect throughout the speed range. The person who did the ECM reprogramming, stated he could not reprogram the EBCM.

Looking through my 2001 GMC ST service manuals (3 of them) the ECM also sends a speed pulse signal to the EBCM circuit 1827, terminal B1. With the changes I made so far, this generates a code of P0238, Vehicle Wheel Speed Mismatch (no other codes present) along with the ABS / Brake light coming on after the first mile of driving.

I fully understand all the concepts, diagnostics and needed corrections to this issue, but here is my question:

Who in North America can reprogram this EBCM to have it recognize that this vehicle has a 3.08 axle instead of a 4.10 ???

I know somebody will say take it to the dealer and use a Tech 2 for the reprogramming. I have approached 10 plus Detroit area dealers over the last 18 months and they tell me my "truck is too old", or they will only be able to program what is assigned to the VIN number. The performance shops in southeastern Michigan are also clueless on what to do, they tell me to pull the fuses.

I cannot believe I'm the only person in North America that has done this.

Can anybody in this forum suggest a place / person who has the capacity to make this software change within this EBCM???

No answers yet

Your Answer

GMC Sonoma Experts

  • #1
    parkle
    Reputation
    680
  • #2
    Mike Bonnell
    Reputation
    480
  • #3
    James Mayfield
    Reputation
    320
View All

Related Models For Sale

Used Chevrolet S-10
8 listings starting at $5,495
Used Ford Ranger
66 Great Deals out of 341 listings starting at $2,995
Used Ford F-150
472 Great Deals out of 10,109 listings starting at $3,450
Used Toyota Tacoma
40 Great Deals out of 879 listings starting at $5,990
Used GMC Sierra 1500
266 Great Deals out of 10,821 listings starting at $2,995
Used Chevrolet Silverado 1500
178 Great Deals out of 11,110 listings starting at $999
Used Dodge Dakota
9 Great Deals out of 160 listings starting at $2,900
Used Nissan Frontier
15 Great Deals out of 421 listings starting at $4,950
Used Chevrolet Silverado 2500HD
6 Great Deals out of 808 listings starting at $3,995
Used Dodge Ram 1500
47 Great Deals out of 536 listings starting at $1,300
Used Jeep Wrangler
114 Great Deals out of 1,597 listings starting at $3,995
Used Toyota Tundra
32 Great Deals out of 939 listings starting at $2,500
Used GMC Sierra 2500HD
24 Great Deals out of 855 listings starting at $3,995

Used Cars For Sale

2002 GMC Sonoma For Sale
3 listings starting at $7,950

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.