Default Temperatures

1997 Chevrolet Chevy Van G2500, Van Cargo Extended, 6.5 FSECTION Default Temperatures

If any ECT DTC (P0117, P0118, P1114 or P1115) is set, PCM substitutes a transmission fluid temperature default value of 275°F (135°C). If ECT is more than 257°F (125 °C), PCM substitutes a transmission fluid temperature value of 275°F (135°C).

If engine run time is less than 5 minutes, and no IAT DTCs (P0112 or P0113) are set and IAT is available, PCM substitutes a transmission fluid temperature value equal to IAT.

If any IAT DTCs (P0112 or P0113) are set, or IAT is not available, PCM substitutes a transmission fluid temperature default value of 194°F (90°C).

If engine run time is more than 5 minutes, no IAT DTCs (P0112 or P0113) are set, IAT is available, ECT is 104-257°F (40-125°C), and IAT at start-up is less than 59°F (15°C), PCM substitutes a transmission fluid temperature default value equal to ECT plus 8°F (5°C). If IAT at start-up is more than 95°F (35°C), PCM substitutes a transmission fluid temperature default value equal to ECT plus 16°F (10°C). If IAT at start-up is 59-95°F (15-35°C), PCM substitutes a transmission fluid temperature default value equal to ECT.

If engine run time is more than 5 minutes, and any IAT DTCs (P0112 or P0113) is set, or IAT is not available, PCM substitutes a transmission fluid temperature default value equal to ECT.

If engine run time is more than 5 minutes, and ECT is less than 104°F (40°C), PCM substitutes a transmission fluid temperature default value equal to 140°F (60°C).

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.

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.