Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSGMC2011SAVANA SPECIAL 4.8 AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 4 (ENGINE CONTROLS AND FUEL - 6.6L (LGH) - DTC P0016 THROUGH DTC P11DC)DIAGNOSTIC INFORMATION AND PROCEDURESDTC P0106TESTINGCIRCUIT/SYSTEM TESTING
2011 GMC Savana Special 4.8 A
Circuit/System Testing
2011 GMC Savana Special 4.8 ASECTION Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
NOTE:
- You must perform the Circuit/System Verification before proceeding with the Circuit/System Testing.
- You must perform the Diagnostic Repair Verification after completing the Circuit/System Testing.
- Verify the integrity of the entire air induction system by inspecting for the following conditions:
- Damaged components
- Loose or improper installation
- An air flow restriction or leak
- Any snow or ice build-up in the air cleaner or MAF Sensor
- Any ice, water, coking, or restrictions at the MAP Sensor Port
- Ignition ON, engine OFF, observe the scan tool BARO parameter. Compare the BARO parameter to the range specified in the Altitude Vs. Barometric Pressure table. Refer to Altitude Versus Barometric Pressure
.
- If the BARO parameter is outside the range specified, replace the ECM.
- Ignition OFF, disconnect the harness connector at the MAP sensor.
- Ignition OFF and scan tool disconnected for 90 s, test for less than 5 Ξ© between the low reference circuit terminal 2 and ground.
- If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
- Ignition ON, test for the 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.
- If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
- If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the ECM.
- Verify the scan tool MAP parameter is less than 45 kPa (6.5 psi).
- If greater than the specified range, test the signal circuit terminal 3 for a short to voltage. If the circuit tests normal, replace the ECM.
- Install a 3 A fused jumper wire between the signal circuit terminal 3 and the 5 V reference circuit terminal 1. Verify the scan tool MAP parameter is greater than 253 kPa (36.7 psi).
- If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
- If all circuits test normal, test or replace the MAP sensor.
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.