Description: 3.5L. 3.9L. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components Iridium composition provides a high melting point and great strength, helps to provide excellent wear resistance and durability Iridium ...

Description: Terraza, Uplander. 3.9l. G6. 3.5l, 3.9l. Lucerne. 3.9l. 3.4L. Malibu. 3.5l. Malibu, Malibu Maxx. 3.9l. Vue. 3.5l. Aura. 3.5l. 5.3L. Montana SV6. 3.9l. This part requires programming and/or special setup procedures. GM Service Information describes the proc ...

Description: Sends signals to the engine control module (ECM) to adjust timing Helps prevent damage to the engine caused by pre-ignition

Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original equipment parts are designed to work with your GM vehicle safety systems - aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type