2008 Avalanche White Xterra X 4x4
Join Date: Nov 2007
Location: DFW/San Antonio, TX
Timing chain guides are plastic guides that help route the metal timing chain so the sound from the metal chain is like whinning slapping type of noise...look on youtube, i remember seeing videos of people recording it.
i have an 08 with 164k and i havent heard the noise, but im planning this summer to change the guides regardless as they are obviously a wear and tear item.
08-X MODEL-4X4-WHITE-MB TKO'S-AVIC-D3-DURATRAC's-PRG DUAL AAL REAR-REAR LIFT SHACKLE-SHROCKWORKS SLIDERS-HARDCORE OFFROAD FRONT AND REAR BUMPER, OEM FOGS-TITAN SWAP 1-30-16: M226 eLOCKER, LOKKA 3.36 RATIO, 1ST GEN TUNDRA COIL OVERS ---> IT WILL NEVER END.......