GMC Yukon 2000–2006
Common on this vehicle:Warning lightLoss of engine power, no acceleration
Record by record
12 records state a cause or a remedy. Each record is shown as short labels in the order fault → finding the cause → correction. Press a label to narrow to the records that state it.
Symptom
Component named as the cause
A ribbon is as wide as the records that state both of its ends (only the commonest are drawn). A record that names several symptoms or components runs through each. Orange is records that say the fault came back or was not fixed. Results come from owners’ reports only; one that does not say is “result not stated”. None of this is a likelihood of a cause or a rate at which work succeeds.
Read the records one by one (10)
Known issuesDTCs P2108, P1516 and U0107 (do not replace the TAC module)3
Manufacturer communication2006 GMC YUKON ・ 2007-01-25
1Fault
2Finding the cause
Not stated
3Correction
What the documents say to do
DTCs P2108, P1516 and U0107 (do not replace the TAC module)Confirm
- Perform the diagnostics for the DTCs, but delete the steps that involve replacing the TAC module.
Caution
- Do not replace the TAC module; the reference given is PIP 3812A.
Read the sentences of the record
- Remedy
- LR4, LY2, L33, LH6, LM7, L59, LC9, LMG, LY5, LS2, LQ9, LQ4, L76, LY6 THROTTLE ACTUATOR CONTROL (TAC). MODULE CODES, MIL/SES DTC'S P2108, P1516, U0107, REDUCED ENGINE POWER. *KB
Manufacturer communication2006 GMC YUKON ・ 2006-10-01(also printed in 1 other issues)
DTCs P2108, P1516 and U0107: do not replace the TAC module
1Fault
2Finding the cause
Steps to confirm (in the document’s order)
- Perform the diagnostics for DTCs P2108, P1516 and U0107, but delete the steps that involve replacing the TAC module.
3Correction
Repair
- The reference given for this row is PIP 3812A.
Caution
- Do not replace the TAC module if DTCs P2108, P1516 and U0107 are present.
Read the sentences of the record
From the manufacturer’s document
- Applies to：The row is for 2006 Escalade, Tahoe, Avalanche, Express, Silverado, Savana, Sierra and Yukon, and concerns an increase in TAC module warranty associated with DTCs P2108, P1516 and U0107.
- Confirm：Perform the diagnostics for DTCs P2108, P1516 and U0107, but delete the steps that involve replacing the TAC module.
- Caution：Do not replace the TAC module if DTCs P2108, P1516 and U0107 are present.
- Repair：The reference given for this row is PIP 3812A.
Open this issue of GM TechLink ↗ The points above are read from an article of TechLink, GM’s monthly publication for dealership technicians. The article itself is not reproduced here.
- Remedy
- Powertrain Issues — Fix It Right the First Time 2006 Escalade, Tahoe, Avalanche, Express, Silverado, Savanna, Sierra, Yukon - Increase in TAC module warranty associated with DTCs P2108, P1516 and U0107. Perform diagnostics for DTCs P2108, P1516 and U0107 but delete steps involving replacing TAC Module Don’t replace TAC module if DTCs P2108, P1516 and U0107 are present. Don’t replace TAC module if DTCs P2108, P1516 and U0107 are present. PIP 3812A
Manufacturer communication2006 GMC YUKON ・ 2006-07-19
Throttle Body Codes P2108, P1516, U0107
1Fault
2Finding the cause
Not stated
3Correction
THROTTLE BODY CODES P2108, P1516, AND U0107. *TT
What the documents say to do
DTCs P2108, P1516 and U0107 (do not replace the TAC module)Confirm
- Perform the diagnostics for the DTCs, but delete the steps that involve replacing the TAC module.
Caution
- Do not replace the TAC module; the reference given is PIP 3812A.
Read the sentences of the record
- Remedy
- THROTTLE BODY CODES P2108, P1516, AND U0107. *TT
Known issuesThrottle body carbon build-up: idle surge, reduced engine power, throttle DTCs (high mileage)1
Manufacturer communication2006 GMC YUKON ・ 2018-01-16
Engine Control System Update - Idle Surge and Power Mode Issues
1Fault
- If enough carbon builds up, an idle surge, deceleration surge, tip-in hesitation, reduced engine power mode, and/or DTCs P0068, P0121, P1516, P2101, P2119 and/or P2176 may be experienced on high mileage vehicles.
2Finding the cause
Possible causes
- As carbon builds up in the throttle body of a high mileage vehicle, the ECM/PCM learns to compensate by increasing the throttle plate angle.
Steps to confirm (in the document’s order)
- If SI diagnosis does not isolate the cause, inspect the throttle body bore and plate for obvious carbon build up.
- Depending on the vehicle, the idle learn reset/reset idle learn is normally found on the Tech 2 ECM menu for Module Set Up or Special Functions/TAC System.
3Correction
Repair
- If carbon is present, follow the Throttle Body Cleaning Procedure in SI to clean the throttle body.
- After ensuring that the throttle body bore and plate are clean, perform an idle learn reset/reset idle learn with the Tech 2/GDS and re-evaluate the concern.
Caution
- If the throttle body is cleaned without performing an idle learn reset/reset idle learn with the Tech 2, the ECM/PCM may continue to compensate for the previous carbon build up, and the concern may return along with DTCs P0121, P0506 and/or P0507.
- If the ECM/PCM of a high mileage vehicle is replaced and/or reprogrammed without performing the Throttle/Idle Learn outlined in SI, it may no longer compensate for existing carbon build up in the throttle body.
Read the sentences of the record
From the manufacturer’s document
- Applies to：The model table lists the GMC Yukon, model years 2006 - 2018, all V8 engines.
- Condition：If enough carbon builds up, an idle surge, deceleration surge, tip-in hesitation, reduced engine power mode, and/or DTCs P0068, P0121, P1516, P2101, P2119 and/or P2176 may be experienced on high mileage vehicles.
- Cause：As carbon builds up in the throttle body of a high mileage vehicle, the ECM/PCM learns to compensate by increasing the throttle plate angle.
- Confirm：If SI diagnosis does not isolate the cause, inspect the throttle body bore and plate for obvious carbon build up.
- Repair：If carbon is present, follow the Throttle Body Cleaning Procedure in SI to clean the throttle body.
- Repair：After ensuring that the throttle body bore and plate are clean, perform an idle learn reset/reset idle learn with the Tech 2/GDS and re-evaluate the concern.
- Caution：If the throttle body is cleaned without performing an idle learn reset/reset idle learn with the Tech 2, the ECM/PCM may continue to compensate for the previous carbon build up, and the concern may return along with DTCs P0121, P0506 and/or P0507.
- Caution：If the ECM/PCM of a high mileage vehicle is replaced and/or reprogrammed without performing the Throttle/Idle Learn outlined in SI, it may no longer compensate for existing carbon build up in the throttle body.
- Confirm：Depending on the vehicle, the idle learn reset/reset idle learn is normally found on the Tech 2 ECM menu for Module Set Up or Special Functions/TAC System.
Open the manufacturer’s document (PDF) ↗ The points above were read from this document.
- Remedy
- This PI was superseded to update model years and add information concerning idle surge, reduced engine power mode, and/or DTCs P0068, P0121, P1516, P2101, P2119, and/or P2176 that may be experienced on high mileage vehicles. Please discard PIP4578.
ENGINE AND ENGINE COOLING4
Manufacturer communication2003 GMC YUKON ・ 2004-09-27
Service Engine Soon light and reduced engine power mode
1Fault
2Finding the cause
Not stated
3Correction
Read the sentences of the record
- Remedy
- SERVICE ENGINE SOON LIGHT AND / OR REDUCED ENGINE POWER MODE DUE TO DIAGNOSTIC TROUBLE CODES P0120, P0220, P1516 AND/OR P1518. THIS CONDITION IS NORMALLY VERY INTERMITTENT. *TT
Manufacturer communication2003 GMC YUKON ・ 2004-09-27
SERVICE ENGINE SOON Light and Reduced Engine Power Mode
1Fault
2Finding the cause
Not stated
3Correction
Read the sentences of the record
- Remedy
- SERVICE ENGINE SOON LIGHT AND / OR REDUCED ENGINE POWER MODE DUE TO DIAGNOSTIC TROUBLE CODES P0120, P0220, P1516 AND/OR P1518. THIS CONDITION IS NORMALLY VERY INTERMITTENT. *TT
Manufacturer communication2003 GMC YUKON DENALI ・ 2003-11-24
Service Engine Soon Light On with TAC Module Codes
1Fault
2Finding the cause
3Correction
Read the sentences of the record
- Remedy
- SERVICE ENGINE SOON (SES) LIGHT ON WITH TAC MODULE CODES P1516 AND POSSIBLE CODES P1514, P1515, P1518. *TT
Manufacturer communication2003 GMC YUKON ・ 2003-09-29
Check Engine Light With DTC P0120, P0220, P1516, P1518
1Fault
2Finding the cause
Not stated
3Correction
Read the sentences of the record
- Remedy
- CHECK ENGINE LIGHT ON WITH NO DRIVABILITY CONCERNS, DIAGNOSTIC TROUBLE CODE P0120, P0220, P1516, OR P1518 SET. *TT
ELECTRICAL SYSTEM2
Manufacturer communication2005–2006 GMC YUKON DENALI ・ 2018-05-21(1 earlier editions of this document folded here)
Throttle Position Sensor Cover Replacement
1Fault
- Loss of engine power, no acceleration
- Warning light
- Check engine / Service Engine Soon
- Reduced Engine Power
- P2135
- P1516
- P2101
- P2176
- The malfunction indicator lamp (MIL) is illuminated with a Reduced Engine Power message displayed.
- A scan tool may show DTC P2135: Throttle Position (TP) Sensor 1-2 Correlation set as Current or in History.
2Finding the cause
Possible causes
- The condition may be caused by the difference between TP Sensor 1 and TP Sensor 2 exceeding a calibrated value for more than 2 seconds.
Steps to confirm (in the document’s order)
- After installing the new cover, if the scan tool TP Sensor 1 and 2 Agree/Disagree parameter displays Disagree, replace the throttle body assembly.
- If DTC P1516, P2101 and/or P2176 are set, replace the throttle body.
3Correction
Repair
- Clean the throttle body bore and throttle plate with a clean shop towel and GM Top Engine Cleaner, P/N 1052626 (in Canada, P/N 993026), or ACDelco Upper Engine and Fuel Injector Cleaner, P/N 88861803, or an equivalent product.
- Remove the old TP sensor cover from the throttle body: grasp the cover, carefully lift it up and separate it from the throttle body.
- Tighten the throttle body fasteners to 89 lb in (= 10.1 N·m) (the text prints the metric value as "10 Y").
- Reprogram the ECM using the Service Programming System (SPS) with the latest calibration available on TIS2WEB.
- Perform the Throttle Learn Reset Procedure.
Part numbers printed in the document
88861803Cleaner,Fuel Injector & Upper Engine Acdelco 16OzLook up at RockAuto (aftermarket candidates) ↗Search the web ↗
Replaced by: 19355198as stated by GMPartsGiant (checked 2026-10-06) ↗Look up at RockAuto (aftermarket candidates) ↗Search the web ↗
The numbers are as the document prints them. The name and the replacing number are what the pages of GMPartsGiant, a reseller of genuine parts and not GM, state. Aftermarket equivalents are not checked here (the links only search by number). Confirm the fit for the vehicle (VIN) before ordering.
Parts
- Part number 19259452, Throttle Position (TP) Sensor Cover, quantity 1.
Part numbers printed in the document
19259452Sensor Kit,Throttle PositionLook up at RockAuto (aftermarket candidates) ↗Search the web ↗
No successor statedas stated by GMPartsGiant (checked 2026-10-06) ↗
The numbers are as the document prints them. The name and the replacing number are what the pages of GMPartsGiant, a reseller of genuine parts and not GM, state. Aftermarket equivalents are not checked here (the links only search by number). Confirm the fit for the vehicle (VIN) before ordering.
Caution
- Do not replace the throttle body; follow the procedure in the bulletin instead.
- If the throttle body is dropped at any time during the procedure, abort the procedure and replace it with a new throttle body assembly.
Read the sentences of the record
From the manufacturer’s document
- Applies to：The Yukon entries are 2008-2011 GMC Canyon, Savana, Sierra, Sierra Denali and Yukon models (note: earlier Yukon model years are not listed).
- Condition：The malfunction indicator lamp (MIL) is illuminated with a Reduced Engine Power message displayed.
- Condition：A scan tool may show DTC P2135: Throttle Position (TP) Sensor 1-2 Correlation set as Current or in History.
- Cause：The condition may be caused by the difference between TP Sensor 1 and TP Sensor 2 exceeding a calibrated value for more than 2 seconds.
- Caution：Do not replace the throttle body; follow the procedure in the bulletin instead.
- Repair：Clean the throttle body bore and throttle plate with a clean shop towel and GM Top Engine Cleaner, P/N 1052626 (in Canada, P/N 993026), or ACDelco Upper Engine and Fuel Injector Cleaner, P/N 88861803, or an equivalent product.
- Repair：Remove the old TP sensor cover from the throttle body: grasp the cover, carefully lift it up and separate it from the throttle body.
- Caution：If the throttle body is dropped at any time during the procedure, abort the procedure and replace it with a new throttle body assembly.
- Confirm：After installing the new cover, if the scan tool TP Sensor 1 and 2 Agree/Disagree parameter displays Disagree, replace the throttle body assembly.
- Confirm：If DTC P1516, P2101 and/or P2176 are set, replace the throttle body.
- Repair：Tighten the throttle body fasteners to 89 lb in (= 10.1 N·m) (the text prints the metric value as "10 Y").
- Repair：Reprogram the ECM using the Service Programming System (SPS) with the latest calibration available on TIS2WEB.
- Repair：Perform the Throttle Learn Reset Procedure.
- Parts：Part number 19259452, Throttle Position (TP) Sensor Cover, quantity 1.
Open the manufacturer’s document (PDF) ↗ The points above were read from this document.
- Remedy
- This technical bulletin provides a procedure for replacing the throttle position sensor cover for concerns regarding a indicator lamp illuminated reduced power message displayed and DTC P2135 set.
Manufacturer communication2003–2006 GMC YUKON ・ 2004-10-04
Service Engine Soon Light and Reduced Engine Power (P1516)
1Fault
2Finding the cause
Not stated
3Correction
Read the sentences of the record
- Remedy
- SERVICE ENGINE SOON LIGHT AND REDUCED ENGINE POWER WITH A DIAGNOSTIC TROUBLE CODE P1516. DIAGNOSTIC TROUBLE CODES P0120, P0220, P1514, P1515, P1518 AND P2135 MAY ALSO BE PRESENT. *TT
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