SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSPONTIAC1991LEMANS LE, 2D HATCHBACK, AUTOMATIC, 3T40/MD9REPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROLS - SPECIFICATIONSQUICK-SERVICESERVICE INTERVALS & SPECIFICATIONS
1991 Pontiac LeMans LE, 2D Hatchback, Automatic, 3T40/MD9

Service Intervals & Specifications

1991 Pontiac LeMans LE, 2D Hatchback, Automatic, 3T40/MD9SECTION Service Intervals & Specifications
REPLACEMENT INTERVALS

Component Normal Service: Miles Severe Service: Miles
Oil & Filter 7500 3000
Air Filter 30,000 (1) 30,000
A/T Transaxle Fluid 100,000 15,000
M/T Transaxle Fluid (2) (2)
Cam Timing Belt 60,000 60,000
Coolant 30,000 30,000
Fuel Filter 30,000 30,000
Spark Plugs 30,000 30,000
(1) As necessary if operated in dusty conditions.
(2) Does not require service.
V-BELT ADJUSTMENT TENSION (1)

Application Lbs. (kg)
A/C Drive Belt
New Belt 155 (70.3)
Used Belt 80 (36.3)
Alternator
New Belt 90 (40.8)
Used Belt 77 (34.9)
(1) Tension in Lbs. (kg) using belt tension gauge.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

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

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