GM knock sensor extension harness for 98-04 LSx engine platforms with the squeeze tab style knock sensors. Harness includes valley pan upper seals.
Fits the following:
98-04 LS1/LS2/LS6 Corvette
98-02 LS1 Camaro & Firebird
04 LS1 GTO
99-04 4.8/5.3/6.0 Silverado/Sierra
NOTE - 98 model LS1's use both the locking tab style knock sensor, and the squeeze style knock sensor, so always check your sensors before changing harnesses. You can interchange harnesses as long as you change the knock sensors with the harness.