P0700 on GMC TERRAIN — Transmission Control System (MIL Request)

Q: "What does P0700 mean on a GMC TERRAIN?"

"P0700 indicates: Transmission Control System (MIL Request). This is a transmission code. 3 GMC TERRAIN owners have reported this to NHTSA."

Q: "What are the most common causes of P0700 on GMC TERRAIN?"

"Based on 3 NHTSA reports, the most commonly cited components are: Power Train, Power Train,Vehicle Speed Control,Fuel/Propulsion System, Power Train,Engine. These percentages are based on the component field in owner complaints."

Q: "Is P0700 serious on my GMC TERRAIN?"

"Of 3 NHTSA reports for this code on GMC TERRAIN, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my GMC TERRAIN shows P0700?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

What P0700 Means on Your GMC TERRAIN

P0700 is a diagnostic trouble code indicating: Transmission Control System (MIL Request). This code relates to the transmission system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

3 GMC TERRAIN owners have reported this issue to NHTSA across model years 2016-2024. Most reports come from the 2016, 2018 model years.

Real GMC TERRAIN Owner Reports

Source: NHTSA Complaints Database

"Code p0700 was indicated at a professional transmission shop. My vehicle started driving different. It is a scary feeling. I have a ten year old daughter who I commute to school and safety is the utmost of importance."

— 2016 GMC TERRAIN owner · POWER TRAIN · Filed 08/22/2024

"Hello. As I come to a complete stop the car will go into auto-stop. After releasing the brake pedal the car will jerk forward . As I press the gas pedal the car Jerks and shakes . The rpm jumps way up and the mph say low.."

— 2018 GMC TERRAIN owner · POWER TRAIN,VEHICLE SPEED CONTROL,FUEL/PROPULSION SYSTEM · Filed 08/08/2024

"The contact owns a 2024 GMC Terrain. The contact stated that while his wife was driving at various speeds, the vehicle experienced a loss of automotive power. The check engine and transmission warning lights were illuminated."

— 2024 GMC TERRAIN owner · POWER TRAIN,ENGINE · Filed 09/12/2025

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

1

'16

1

'18

1

'24

Common Causes on GMC TERRAIN

Based on NHTSA complaint component analysis for this vehicle.

POWER TRAIN 33.3%

POWER TRAIN,VEHICLE SPEED CONTROL,FUEL/PROPULSION SYSTEM 33.3%

POWER TRAIN,ENGINE 33.3%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P0700 mean on a GMC TERRAIN? ▾

P0700 indicates: Transmission Control System (MIL Request). This is a transmission code. 3 GMC TERRAIN owners have reported this to NHTSA.

What are the most common causes of P0700 on GMC TERRAIN? ▾

Based on 3 NHTSA reports, the most commonly cited components are: Power Train, Power Train,Vehicle Speed Control,Fuel/Propulsion System, Power Train,Engine. These percentages are based on the component field in owner complaints.

Is P0700 serious on my GMC TERRAIN? ▾

Of 3 NHTSA reports for this code on GMC TERRAIN, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my GMC TERRAIN shows P0700? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.