OEM GMC Sierra 1500 Distributor

GMC Sierra 1500 Distributor Parts Questions & Experts Answers

• Distributor Assembly
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  Q: How to overhaul the distributor on GMC Sierra 1500?

  A: Prior to dismantling the Distributor start by marking holes in the Distributor driven gear, shaft and rotor for correct assembly. The white paint mark on the Distributor's lower stem must line up with the predrilled hole in the bottom of the gear to position the v6 engine rotor segment correctly. If not, replace the Distributor. Detach rotor screws then take the rotor while writing down the rotor screw hole locations and rotor locator pin hole positions. Fit the square-cut hole of the vane wheel to the cmp sensor before discarding both the cmp sensor screws and the cmp sensor itself. Examine the dimple found below the roll pin hole of one Distributor drive gear side for correct placement when putting components together. A v-block or equivalent fixture should support the drive gear while you use an appropriate punch to extract the roll pin before you remove the gear and its parts including a round washer a tang washer a shim washer and an oil seal. Place the cmp sensor into the square-cut hole of the vane wheel before installing new screws torqued to 2.2 n.m (19 lb in). After that mark the distribution rotor's mounting holes. Screw in the Distributor rotor using index marks while tightening its screws to 1.9 n.m (17 lb in) torque setting. Place the shim washer at the Distributor shaft's bottom before installing the tang washer and round washer. Route the driven gear based on index marks to match the displayed v6 engine configuration while making sure the Distributor's white marker faces the pre-drilled indent on the gear's bottom surface. When the driven gear gets positioned improperly the dimple will appear at a 180-degree position relative to the rotor segment. Before installation place the Distributor drive gear in a v-block while using a suitable punch to install the roll pin. Then install a new oil seal under the mounting flange before putting back the Distributor.