OEM GMC Savana 1500 Distributor

GMC Savana 1500 Distributor Parts and Q&A

• Distributor Assembly
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  Q: How to service and repair the distributor on GMC Savana 1500?

  A:

  The service and repair of the Distributor start by the removal of the engine cover. Mark the Distributor components such as the driven gear, Distributor shaft, and rotor holes to aid in the correct assembly process because improper assembly results to a no-start situation and possible damage to the engine. Position the white paint mark down the bottom stem of the Distributor against the pre-drilled indent hole positioned at the bottom of the gear. Confirm the rotor segment is properly mounted for a v6 engine ; if not, replace the Distributor. Preparations and removal of two screws from the rotor, then pull out rotor noting locating holes for rotor screw and locator pin. Position the squarish-cut hole of the vane wheel to fit with the camshaft position (CMP) sensor and then pull off the 2 screws that attach the cmp sensor and discard them. Remove the cmp sensor and record the presence of the dimple beneath the roll pin hole on the gear around it. These dimples will help determine the orientation later on throughout reassembling the parts. Support the Distributor drive gear into a v-block and drive out the roll pin using an appropriate punch, then remove the driven gear, round washer, tang washer, shim washer, and old oil seal. For assembling, align square cut hole in vane wheel for the cmp sensor then insert the sensor in the housing and fit two new screws for cmp sensor and do a tight loosen of 2.2 n.m (20 lb in). Find the correct rotor mounting position at the rotor screw holes and locator pin holes and install the Distributor rotor based on the index marks and tighten it with the help of two hold- down screws which should be put to 1.9 n.m (17 lb in). Apply shim washer, tang washer and round washer and insert driven gear in relation to index marks. Magnify the rotor section for the v6 engine or v8 engine, position the gear and line up the white paint mark at the underside stem of the Distributor with the pre- drilled indent hole at the underside of the gear. In case the driven gear is placed in a wrong position the dimple will be located about 180 degrees from the rotor segment. Support the Distributor drive gear in v-block, insert the roll pin by using a proper punch and hammer to lock the driven gear. Lastly, install the new oil seal to the mounting flange of the Distributor base, install the Distributor and replace an engine cover.
• Distributor Assembly
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  Q: How to replace the distributor on GMC Savana 1500?

  A:

  Begin Distributor replacement by shutting off the ignition followed by engine cover removal and sequentially disconnecting the air cleaner assembly and the air intake resonator assembly. Twist the wire boot of each spark plug wire 1/2 turn before you pull only the boot to disconnect them from the Distributor Cap. Use a screwdriver to take out the 2 screws holding the Distributor Cap in place against its housing then extract the electrical connector from the Distributor base. Toss these pieces away. Apply a grease pencil to mark two reference points on the Distributor housing and intake manifold then mark down the rotor position against the Distributor housing before removing the Distributor Cap. At Distributor removal you should observe the rotor moving counter-clockwise by about 42 degrees and should apply another alignment mark to the Distributor base while reassembly approaches. Unscrew the mounting clamp hold-down bolt before removing the Distributor. The new Distributor assembly requires two matching Distributor housing marks at positions analogous to those on the original component. To install the Distributor guide it into position while aligning the rotor segment with the second mark followed by placing and securing the Distributor base hole above the intake manifold mounting slot. Monitor the rotor's clockwise movement to reach 42 degrees while installing the Distributor. After placing the Distributor in position check that the rotor segment points towards the Distributor base mark. When the Distributor position does not align properly with the mark use the Distributor installation procedure again. Register Distributor mounting clamp bolt to 25 nm (18 lb ft) before installing the Distributor Cap and securing it with new screws tightened to 2.4 n.m (21 lb in). Reconnect the electrical connector then position the Spark Plug Wires and ignition coil wire with proper orientation before installation. The detector lamp warns you that you installed the Distributor incorrectly when p1345 dtc gets triggered. Installation procedure 2 requires top dead center (TDC) positioning of the number 1 cylinder compression stroke while matching the crankshaft balancer marks to front cover tabs. Guide the white paint mark from the Distributor's bottom stem through the pre-drilled indent situated in the gear. The Distributor must receive proper markings because improper reassembly methods could either block engine startup or lead to motor damage. The installation requires correctly positioned gears which lead you to guide the Distributor through the engine opening maintaining the flat housing section facing forward. When the rotor segment reaches complete insertion its position must match the Distributor base pointer. If not, repeat the procedure. Tighten the Distributor mounting clamp bolt to 25 n.m (18 lb ft) and then install the Distributor Cap while securing new screws at 2.4 n.m (21 lb in) torque. After reconnecting the electrical connector, place the Spark Plug Wires and ignition coil wire properly. An illuminated malfunction indicator lamp, together with the detection of dtc p1345, requires you to perform installation procedure 2 again. Finally, install the engine cover.