Question

For my 2003 Chevrolet Tahoe 5.3L, what is the code 327 and 332? What does these codea mean

Answer 1

327 and 332 these are not code, If you have a P0327 and a P0332 these are codes they are for the knock sensor. What commonly happens is water tends to accumulate in the port of the knock sensor and rust away the knock sensor and its port. Your fix is to replace the knock sensor and clean out the rust that is built up there . and when you install a new knock sensor you secure its cover with RTV silicone to prevent water from entering into the know sensor

Answer 2

P0327 Chevrolet Code - Knock Sensor Circuit Low Voltage Bank 1
Read more: https://www.autocodes.com/p0327_chevrolet.html

P0332 Chevrolet Code - Knock Sensor Circuit Low Voltage Bank 2
Read more: https://www.autocodes.com/p0332_chevrolet.html