
2004 GMC Envoy SLT 4.2L Hesitation
This vehicle was brought in and when stepping on gas reduced power light comes on and vehicle seems to be in almost a limp mode. Can not get over 30 miles per hour. It has very little power. I have been checking posts and was wondering if it needs updated prog...
FIX posted 8/5/2014
![]()
iATN Members:
Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle (View Replies)11 Replies Received(Hide Replies)11 Replies Received
|
Message Closed w/FIX
|
VIN | 1GKET12S84 |
Engine | 4.2 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Hesitation |
Occurs | Always, Under Load |
Trouble Codes
P0122 | Throttle Position Sensor Circuit Low Voltage |
P0641 | PCM Sensor Reference Voltage 'A' Circuit Malfunction |
P0651 | PCM Sensor Reference Voltage 'B' Circuit Malfunction |
P2135 | Throttle Position Sensor 1/2 Incorrect Voltage Correlation |
P2138 | Accelerator Pedal Position Sensor 1/2 Incorrect Voltage Correlation |
Message Closed w/FIX
Vehicle Data
2004 GMC Envoy SLT
VIN | 1GKET12S84 |
Engine | 4.2 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Hesitation |
Occurs | Always, Under Load |
Trouble Codes
P0122 | Throttle Position Sensor Circuit Low Voltage |
P0641 | PCM Sensor Reference Voltage 'A' Circuit Malfunction |
P0651 | PCM Sensor Reference Voltage 'B' Circuit Malfunction |
P2135 | Throttle Position Sensor 1/2 Incorrect Voltage Correlation |
P2138 | Accelerator Pedal Position Sensor 1/2 Incorrect Voltage Correlation |