answersLogoWhite

0


Best Answer

Severe spark knock (pinging) can damage the engine. Knock sensors detect spark knock (pinging) in the engine. They send that info to the ECM (Engine Control Module). The ECM makes temporary adjustments in engine timing to eliminate the spark knock.

User Avatar

Wiki User

9y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What are the knock senors for on a 2004 Chevy truck 4x4?
Write your answer...
Submit
Still have questions?
magnify glass
imp