Facts About Generators
GeneratorsDirectoryCompareRepairEnginesControllersPartsManufacturersGuides
Search models or part #
Home›Repair guides›General Motors›Manifold Absolute Pressure (MAP) Sensor Replacement

General Motors 8.1 — Manifold Absolute Pressure (MAP) Sensor Replacement

Repair & overhaul · MAP sensor

For the General Motors 8.1, from the General Motors service manual.

Applies to: General Motors 8.1L engine

Procedure

  1. Loosen the fastener from the intake manifold sight shield.
  2. Remove the sight shield from the intake manifold.
  3. Disconnect the MAP sensor electrical connector.
  4. Remove the MAP sensor retaining bolt and washer.
  5. Remove the MAP sensor from the intake manifold.
  6. Inspect the MAP sensor seal for wear or damage.
  7. Lightly coat the MAP sensor seal with rubber lubricant part number 9985770.
  8. Install the MAP sensor and retaining bolt and washer.
  9. Connect the MAP sensor electrical connector.
  10. Install the intake manifold sight shield.

Specs & values

  • Tighten the MAP sensor retaining bolt to 12 N·m (106 lb in).
  • Tighten the sight shield fastener to 10 N·m (89 lb in).

Source: General Motors service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

More General Motors repair guides →