Electrical, wiring and powerModel years 2003–2006Manufacturer
Reduced Engine Power from throttle body connector crimp, broken wire or grounds
4.8, 5.3, 6.0 or 7.0 V-8; 2003-2006 GMC Yukon and other listed models
FaultCrate・Reduced Engine Power from throttle body connector crimp, broken wire or grounds
A vehicle may come in for a reduced power message and DTCs P0120, P0220, P1516, P2101 or P2135.
The TAC / throttle body codes may be caused by a loose wiring crimp at the throttle body connector or a broken throttle body circuit.
What to do
- Inspect all related throttle body terminals for a loose wiring crimp.
- Wire breaks usually occur within 1 to 4 inches (= 25.4–101.6 mm) of the throttle body connector.
- On C/K trucks, complete SI procedures for voltage drop on grounds G103 and G104; grounds G103 or G104 may be loose or corroded.
- If a terminal crimp or broken wire is found, repair or replace only the circuits involved.
Caution
- Installing this pigtail connector may cause other intermittent TAC module / TP codes at a later date.
In the records
- Accelerator Pedal Sensor: replaced 1（says it came back: 1）
- Throttle Body Connector: replaced 1（says it held for a while: 1）
Applies to
- The bulletin covers 2003-2006 GMC Envoy, Savana, Sierra and Yukon.
- It applies to vehicles with a 4.8, 5.3, 6.0 or 7.0 V-8 engine.
See the evidence (1 documents, 9 passages)
| Document | Publisher | Date |
|---|---|---|
| [1]#PIP3089B: SES Light And Reduced Engine Power DTC P0120 P0220 P1516 P2135 ↗ | ManufacturerGeneral Motors (copy hosted by simple-engineering.com) | 2006-10-31 |
Applies toThe bulletin covers 2003-2006 GMC Envoy, Savana, Sierra and Yukon.
2003-2006 GMC Envoy, Savana, Sierra, Yukon— [1] Models
Applies toIt applies to vehicles with a 4.8, 5.3, 6.0 or 7.0 V-8 engine.
Equipped with a 4.8 5.3 6.0 or 7.0 V-8 Engine— [1] Models
First signsA vehicle may come in for a reduced power message and DTCs P0120, P0220, P1516, P2101 or P2135.
A vehicle may be brought into the dealer for a reduced power message, and DTCs P0120, P0220, P1516, P2101, or P2135.— [1] Condition/Concern
Why it happensThe TAC / throttle body codes may be caused by a loose wiring crimp at the throttle body connector or a broken throttle body circuit.
The Throttle Actuator Control (TAC) / throttle body type trouble codes, may be caused by a loose wiring crimp at the throttle body connector, or a broken throttle body circuit.— [1] Condition/Concern
How to confirmInspect all related throttle body terminals for a loose wiring crimp.
Inspect all related throttle body terminals for a loose wiring crimp.— [1] step 1
How to confirmWire breaks usually occur within 1 to 4 inches (= 25.4–101.6 mm) of the throttle body connector.
Breaks in the wires usually occur within 1 to 4 inches of the throttle body connector.— [1] step 2
How to confirmOn C/K trucks, complete SI procedures for voltage drop on grounds G103 and G104; grounds G103 or G104 may be loose or corroded.
On C/K trucks complete SI procedures for voltage drop on grounds G103 and G104. Grounds G103 or G104 may be loose or corroded.— [1] step 3
RepairIf a terminal crimp or broken wire is found, repair or replace only the circuits involved.
If a terminal crimp or a broken wire has been found, repair or replace only the circuits involved.— [1] Recommendation
CautionInstalling this pigtail connector may cause other intermittent TAC module / TP codes at a later date.
installing this pigtail connector may cause other intermittent TAC module/TP codes at a later date.— [1] Recommendation
Put together by FaultCrate from public records and technical documents. The cause and the repair are for the workshop to decide with the vehicle in front of it. Counts are records, not failure rates.
List the records (1 that can be opened)
Records whose recall number, document number or text matches. Each line says why it matched.
- Stability control disabled and reduced engine power warnings with 5 MPH speed limit on startupOwner complaint 2013-03-03・tied by reading the record: “THEN I BROUGHT IT IN AGAIN ON 11/6/12 FOR THE SAME ISSUE. THEY REPLACED THE "CONNECTOR AT THE THROTTLE BODY" AND CHARGED ME $223.09. THE ISSUE TEMPORARILY WENT AWAY.”