Red Brake Light/Low Brake Fluid Message On Intermittently - keywords C0267 DIC display GMT001 information int intermittent lamp PIC3959 PIC3959A PIC3959B

This PI was superseded to update part numbers. Please discard PIC3956D.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

A customer may comment about a intermittent RED brake light coming on with a possible message on the Driver Information Center (DIC) displaying "low brake fluid". This condition is more likely to occur during cold weather and will be intermittent as the fluid is more viscous

Follow the diagnostics to check and make sure that the brake fluid is not low. If the brake fluid is NOT low then replace the brake Master Cylinder Brake Fluid Reservoir KIT (P/N below) as it has been modified to resolve this concern.

Automatic Transmission Should be MN5 Auto Transmission Master Cylinder Brake Fluid Reservoir KIT Part # 15939572

Manual Transmission Should be M86 5-Sp Manual Transmission Master Cylinder Brake Fluid Reservoir KIT Part # 15939485

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.