Question about 1994 GMC Sonoma

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I am having a problem after warm up and at idle speed the oil pressure drop low enought to trigger the check gauges light. I have been trying to trouble shoot the problem with oil changes etc. but it is probably a failing oil pump. where can I find information as to what kind of a job (cost) this might be, or if this is something I could do over a weekend, thanks Bob. 1994 gmc sonoma 4.3lv6 non vortec

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4.3L Engine To Remove:

  1. Remove or disconnect the following:
    • Engine oil pan
    • The oil pump bolt I am having a problem after warm up and at idle - gm_truck_43_ol-pmp_blt.gif

    • The oil pump
    • Inspect the pins (oil pump locator) for damage gm_truck_43_ol-pmp_loctr-pns.gif

      1. Replace the pins if required
  2. Clean and inspect all parts.
To Install:
  1. Inspect for properly installed pins (oil pump locator). Note: Do not reuse the oil pump driveshaft retainer. During assembly, install a new oil pump driveshaft retainer.
  2. Install or connect the following:
    • The oil pump
      1. Position the oil pump onto the pins
    • The oil pump bolt attaching the oil pump to the rear crankshaft bearing cap
      1. Tighten the oil pump bolt, Torque to: 66 lb ft (90 Nm)
    • The oil pan

Posted on Jul 13, 2010

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