Service Intervals & Specifications

1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Service Intervals & Specifications
WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
REPLACEMENT INTERVALS

Component Miles
Air Filter (1) 30,000
Accessory Drive Belt (2)
Automatic Transaxle Fluid (3)
Engine Coolant (4)
Fuel Filter (5)
Manual Transmission/Transaxle Fluid (6)
Oil & Filter (7) 3000
Spark Plugs 100,000
(1) Inspect every 15,000 if used in dusty conditions.
(2) Check at 60,000 and replace as necessary.
(3) Replace at 60 months or 150,000 miles, whichever occurs first. If used under severe service conditions, replace every 50,000 miles.
(4) Or every 60 months, whichever comes first. Use only GM Goodwrench DEX-COOL(R) or Havoline DEX-COOL(R) coolant or equivalent silicate-free coolant with a 50/50 mixture with drinkable water.
(5) There is no service interval for fuel filter replacement. Only replace the fuel filter if filter is restricted. Inspect fuel tank internally and clean the fuel tank if a restricted fuel filter is found.
(6) Periodic replacement is not required. It is not necessary to check transaxle fluid level. Check for leaks. A fluid leak is the only reason for fluid loss. Inspect the system and repair as needed.
(7) Or every 3 months, whichever occurs first.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.