Close
Car Questions
RepairPal is your advocate for car care advice and guidance

Light Flashing On dash

(1990 Chevrolet 1500 Pickup)
in Lehigh Acres, FL on October 29, 2009
1990 chevrolet K1500 truck, 5.7 eng. THE RED LIGHT IS FLASHING ON THE DASH AND READS A CODE 4 WHAT DOES IT MEAN.
Ask a Question
1 answer & 0 comments
Popular Answer
on October 30, 2009
The red light flashing is probably the "brake" light on your 1990 Chevrolet 1500 Pickup. The code 4 would indicate a fault with the RWAL valve switch. The ABS control module is seeing the RWAL valve switch closed or grounded when it should not be. Sorry I do not have a diagnostic chart available for the RWAL valve switch.
Sign in to reply
Get a repair estimate
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide.
Or interested in getting a repair? Find a Shop
on October 30, 2009
The red light flashing is probably the "brake" light on your 1990 Chevrolet 1500 Pickup. The code 4 would indicate a fault with the RWAL valve switch. The ABS control module is seeing the RWAL valve switch closed or grounded when it should not be. Sorry I do not have a diagnostic chart available for the RWAL valve switch.
Sign in to reply

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
The terminals on my battery were cleaned, and now nothing in the car works no lights and wont turn on. however there ...
This is a good one. i have been a ase tech for 25 years and this one has got me. i am diagnosing the 4x4 system on a ...