P1101 on GMC vehicles

A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.

Owners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.

Bulletins and campaigns GMC filed with NHTSA whose summary names P1101. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• PIP5402D Service bulletin
  2018-07-25 · Engine And Engine Cooling
• This Preliminary Information communication provides the technician with the diagnosis and repair steps for a vehicle with a check engine light on with Diagnostic Trouble Code P015B or a reduced engine power message with Diagnostic Trouble Code P1101. Technician should look for a missing or damaged O-ring seal in the charge air cooler coupler.
• PIP5651 Service bulletin
  2019-05-21 · Power Train
• This Preliminary information communicates the possibility of the charge air cooler pipe connection becoming disconnected from the throttle body causing a reduced power issue and one or more of the following trouble codes P0172, P0299, P0101, P0506, P1101.
• PIP5651A Service bulletin
  2019-06-12 · Engine And Engine Cooling — Cooling System
• This Preliminary information communicates the possibility of the charge air cooler pipe connection becoming disconnected from the throttle body causing a reduced power issue and one or more of the following trouble codes P0172, P0299, P0101, P0506, P1101.
• PIP5710 Service bulletin
  2020-02-11 · Engine
• This Preliminary information communicates the possiblilty of the charge air cooler tube becoming disconnected from the throttle body and causing reduced power with dtc P0172 P0299 P0101 P0506 P1101
• 20NA047 Service bulletin
  2020-02-28 · Equipment
• This technical bulletin provides a service procedure to correct conditions of Front or Rear Crankshaft Oil Leak, MIL Illuminated with DTC P1101 Set.
• 20NA047 Service bulletin
  2020-03-12 · Power Train — Manual Transmission — Shift Pattern Indicator
• This technical bulletin provides a service procedure to correct conditions of Front or Rear Crankshaft Oil Leak, MIL Illuminated with DTC P1101 Set.
• PIP5402B Service bulletin
  2017-09-19 · Equipment Adaptive/Mobility
• This Preliminary Information communication provides the technician with the diagnosis and repair steps for a vehicle with a check engine light on with Diagnostic Trouble Code P015B or a reduced engine power message with Diagnostic Trouble Code P1101. Technician should look for a missing or damaged O-ring seal in the charge air cooler coupler.
• PIP5402C Service bulletin
  2017-09-28 · Engine And Engine Cooling
• This Preliminary Information communication provides the technician with the diagnosis and repair steps for a vehicle with a check engine light on with Diagnostic Trouble Code P015B or a reduced engine power message with Diagnostic Trouble Code P1101. Technician should look for a missing or damaged O-ring seal in the charge air cooler coupler.
• PIP5651E Service bulletin
  2021-06-24 · Power Train
• This Preliminary information communicates the possibility of the charge air cooler pipe connection becoming disconnected from the throttle body causing a reduced power issue and one or more of the following trouble codes P0172, P0299, P0101, P0506, P1101.
• PIP5651F Service bulletin
  2021-08-19 · Power Train
• This Preliminary information communicates the possibility of the charge air cooler pipe connection becoming disconnected from the throttle body causing a reduced power issue and one or more of the following trouble codes P0172, P0299, P0101, P0506, P1101.
• 22-NA-224 Service bulletin
  2022-11-04 · Engine And Engine Cooling
• This service bulletin provides a repair procedure to correct a customer concern of Reduced Engine Power, Malfunction Indicator Lamp (MIL) Illuminated - DTCs P0101, P0172, P0299, P0506, and/or P1101 Set.
• PIP5710A Service bulletin
  2020-08-27 · Engine And Engine Cooling
• This Preliminary information communicates the possiblilty of the charge air cooler tube becoming disconnected from the throttle body and causing reduced power with dtc P0172 P0299 P0101 P0506 P1101

A stored code names the test that failed, never the part that caused it. The record above is what GMC and its owners have filed about it; the code’s page across every make has the whole file.