GMC Yukon XL 2000–2006
Common on this vehicle:Gauge or instrument faultWarning lightCorrosion or rustNoiseLeakReduced brakingStalls or shuts offLoss of engine power, no acceleration
Possible causes
The documents say what to doOnly records name itThe size of a node, the width of a link and the numbers are records matching this search, not likelihoods.
FaultCrate・GMC Yukon XL 2000–2006・Loss of engine power, no acceleration
Candidate cause (the documents say what to do)
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.
How to tell
P0120P0220P1516P2101P2135Check engine / Service Engine SoonReduced Engine Power
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
- Throttle Body Harness: replaced 3（says it came back: 1, says it did not fix it: 2）
- Throttle Position Sensor: replaced 3（says it did not fix it: 2, result not stated: 1）
- Throttle Body: replaced 2（says it came back: 1, says it did not fix it: 1）
See the evidence (1 technical documents, 6 records)
Passages of the technical documents
2003-2006 GMC Envoy, Savana, Sierra, Yukon
General Motors (copy hosted by simple-engineering.com) 2006-10-31
Equipped with a 4.8 5.3 6.0 or 7.0 V-8 Engine
General Motors (copy hosted by simple-engineering.com) 2006-10-31
A vehicle may be brought into the dealer for a reduced power message, and DTCs P0120, P0220, P1516, P2101, or P2135.
General Motors (copy hosted by simple-engineering.com) 2006-10-31
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.
General Motors (copy hosted by simple-engineering.com) 2006-10-31
Records
- Service engine light and reduced power mode episodes since November 2008 Owner complaint 2010-03-10
- Check engine codes returning repeatedly; reduced power mode Owner complaint 2020-07-27
- Check engine light and reduced power warning with complete loss of acceleration, braking and steering Owner complaint 2015-09-28
- Reduced engine power and service engine soon signals appearing repeatedly since September 2014 Owner complaint 2015-02-23
- Reduced power indicator comes on intermittently, vehicle limited to 30 MPH Owner complaint 2011-09-09
A cause or a result a complaint states is the owner’s view or what a dealer told them, not an established fact.
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.