Unwanted ABS Or Valve Activation On Low Speed Turns - keywords brake control EBCM EBTCM stabilitrak TCS VSES
| Subject: | Unwanted ABS or Valve Activation on Low Speed Turns |
| Models: | 2007 Cadillac Escalade, ESV, EXT |
| 2007 Chevrolet Avalanche, Silverado, Suburban, Tahoe |
| 2007 GMC Sierra, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL |
| 1500 Models with Stabilitrak (RPO JL4) |
This PI was superseded to update model years. Please discard PIT4411B.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment of an unwanted ABS or valve activation during low speed turns with no diagnostic codes set in the vehicle. The concern may be noticed on left and right hand turns, but is more common on left hand turns. This may be a result of Corner Brake Control which is a part of the EBCM software. There is no loss of stability control or unwanted brake apply. ABS motor noise may be heard.
Recommendation/Instructions:
A calibration has been released on TIS-2-WEB to make this charteristic less noticeable at very low speeds. Reprogram the EBCM with the latest software.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
