C1226 on Cadillac
Excessive wheel speed variation at one front wheel (GM)
Severity: Inspect soon
GM ties C1226 to the ABS light and to unwanted ABS or traction control activation, which means anti-lock braking and traction control may not work or may act when they should not, while normal braking continues.
It gets more serious if:
- Stop: Stop in a safe place and call for service if the red brake warning light is on or the brake pedal feels different. Toyota's owner's manual, used here as a general benchmark, treats that as a stop condition.
This page covers only what differs on Cadillac. For what C1226 means, the ranked causes and the test order, see the C1226 guide.
What's different on Cadillac
CadillacYour car
1997–1999 · Deville
Supported by vehicle dataGM bulletin 3300 covers an ABS light with C1226 on the DeVille. Meaning of the code on Cadillac was not separately verified.
3300Status unverified
ABS light on with C1226 or unwanted ABS or TCS activation
1996–1999deville, eldorado · issued · NHTSA 10017254
Service information for an ABS light with C1226, or unwanted ABS or traction control activation. The NHTSA summary does not say what the repair is.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- GM bulletin 3300: ABS light on with C1226 or unwanted ABS or TCS activation, Cadillac DeVille, Eldorado, Seville
- GM bulletin 01-05-25-006: excessive wheel speed variation diagnostic tables (C1225, C1226, C1227, C1228), 1998-1999 minivans
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error