GMC P0700 Error Code: How to Fix It

Q: What does GMC P0700 code mean?

P0700 is a generic code indicating the engine control module detected a malfunction in the transmission control system. It's often accompanied by more specific codes that pinpoint the actual problem.

Q: Can I drive with P0700 code?

You may be able to drive short distances, but the transmission may be stuck in limp mode with limited gears. Continued driving could cause expensive internal damage, so have it diagnosed quickly.

Q: How much does it cost to fix P0700?

Costs vary widely from $100-200 for simple wiring issues to $2000-4000 for internal transmission rebuilds. Most electrical issues cost $200-800 to repair.

Q: Will P0700 clear itself?

No, P0700 will not clear itself. The underlying transmission problem must be fixed, and then the code can be cleared with a scanner. If the problem persists, the code will return.

Q: What causes P0700 in GMC vehicles?

Common causes include faulty transmission solenoids, wiring harness damage, low or contaminated transmission fluid, failed transmission control module, or internal transmission mechanical problems.

Abstract

The GMC P0700 error code indicates a transmission control system malfunction in your vehicle. This generic code means the engine control module (ECM) has detected a problem with the transmission control module (TCM) and typically requires checking additional sub-codes to identify the specific issue.