PIP5180C
Service Bulletin Details
Public Details for: PIP5180C
This preliminary information communication provides information to the technician about vehicles that have hard start, extended crank, or black smoke from the exhaust when starting. Technician will need to perform fuel quality test, spark t
- 2020 - 2019 - 2018 - 2017 - 2016 - 2015 - 2014 - 2013 - 2012 - 2011 - 2010 - 2009 - 2008 -
Models from 2020
2020 BUICK ENCLAVE |
2020 CHEVROLET CAMARO |
2020 CHEVROLET EQUINOX |
2020 CHEVROLET IMPALA |
2020 CHEVROLET TRAVERSE |
2020 GMC TERRAIN |
Models from 2019
2019 BUICK ENCLAVE |
2019 CADILLAC ATS |
2019 CADILLAC CTS |
2019 CADILLAC XTS |
2019 CHEVROLET CAMARO |
2019 CHEVROLET EQUINOX |
2019 CHEVROLET IMPALA |
2019 CHEVROLET TRAVERSE |
2019 GMC ACADIA |
2019 GMC TERRAIN |
Models from 2018
2018 BUICK ENCLAVE |
2018 CADILLAC ATS |
2018 CADILLAC CTS |
2018 CADILLAC XTS |
2018 CHEVROLET CAMARO |
2018 CHEVROLET EQUINOX |
2018 CHEVROLET IMPALA |
2018 CHEVROLET TRAVERSE |
2018 GMC ACADIA |
2018 GMC TERRAIN |
Models from 2017
Models from 2016
Models from 2015
Models from 2014
Models from 2013
Models from 2012
Models from 2011
2011 BUICK ENCLAVE |
2011 BUICK LACROSSE |
2011 BUICK REGAL |
2011 CADILLAC CTS |
2011 CADILLAC SRX |
2011 CHEVROLET CAMARO |
2011 CHEVROLET EQUINOX |
2011 CHEVROLET TRAVERSE |
2011 GMC ACADIA |
2011 GMC TERRAIN |
Models from 2010
Models from 2009
2009 BUICK ENCLAVE |
2009 CADILLAC CTS |
2009 CADILLAC SRX |
2009 CADILLAC STS |
2009 CHEVROLET TRAVERSE |
2009 GMC ACADIA |
2009 SATURN OUTLOOK |
Models from 2008
2008 CADILLAC CTS |
2008 CADILLAC SRX |
2008 CADILLAC STS |
Bulletin No.: PIP5180C Published date: 07/28/2020 Preliminary Information PIP5180C Diagnostic Tips For Direct Injected Engines Hard Start Cold Models Brand: Model: Model Years: VIN: from to Engine: Transmissions: Buick Enclave 2009 - 2020 All All 3.6 LFY, 3.6 LLT All Buick LaCrosse 2010 - 2016 All All 2.4 LAF, 2.4 LUK, 3.0 LF1, 3.6 LFX, 3.6 LLT All Buick Regal 2011 - 2017 All All 2.0 LHU, 2.4 LAF, 2.4 LEA, 2.4 LUK All Buick Verano 2012 - 2017 All All 2.0 LHU, 2.4 LEA All Cadillac ATS, ATS-V 2013 - 2019 All All 2.0 LTG, 2.5 LCV, 3.6 LFX, 3.6 LF4 All Cadillac CTS, CTS-V 2008 - 2019 All All 2.0 LTG, 3.0 LF1, 3.6 LF3, 3.6 LFX, 3.6 LLT All Cadillac STS 2008 - 2010 All All 3.6 LLT All Cadillac SRX 2008 - 2016 All All 2.8 LAU, 3.0 LF1, 3.6 LFX All Cadillac XTS 2013 - 2019 All All 3.6 LF3, 3.6 LFX All Chevrolet Camaro 2010 - 2020 All All 2.0 LTG, 3.6 LFX, 3.6 LLT All Chevrolet Caprice PPV 2012 - 2014 All All 3.6 LFX All Chevrolet Captiva Sport 2012 - 2014 All All 2.4 LEA, 3.0 LFW All Chevrolet Equinox 2010 - 2020 All All 2.0 LTG, 2.4 LAF, 2.4 LEA, 3.0 LFW, 3.6 LFX All Chevrolet Impala 2012 - 2020 All All 2.5 LKW, 3.6 LFX All Chevrolet Traverse 2009 - 2020 All All 3.6 LFY, 3.6 LLT All GMC Acadia 2009 - 2019 All All 2.5 LCV, 3.6 LLT All GMC Terrain 2010 - 2020 All All 2.0 LTG, 2.4 LAF, 2.4 LEA, 3.0 LFW, 3.6 LFX All Saturn Outlook 2009 - 2010 All All 3.6 LLT All Supersession Statement This PI was superseded to update Model Years and refer to 19-NA-044. Please discard PIP5180B. The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition / Concern Hard start, extended crank, or excessive black smoke from the exhaust when starting. NOTE: Prior to proceeding with the diagnostics in this PI ensure the concern is not covered in the latest version of 19-NA-044 showing normal conditions with these engines. A comparison to a known good vehicle is also recommended. NOTE: A button push or key turn to start to event time out is not a "NORMAL" condition on any of these vehicles. Recommendations / Instructions Basic Tests: Verify Fuel Quality? Spark Test with ST125, if a coil issue is suspected then follow Ignition System Diagnostics. Perform a Compression Test. You should see 150-185 Average Compression, no cylinder should be less than 140 psi on a HFV6 engine non turbo charged. You should see 170-200 Average Compression, no cylinder should read less than 100 psi on the 4 cylinder engine or turbo charged HFV6. If the condition is a “Hard Start Cold” only, and you suspect that you may have a carbon issue causing a valve to stay open, follow the latest version of 16-NA-383 and perform a cold compression test. Also install a vacuum gauge prior to cold start and watch needle for signs of a sticking valve. Fuel System Check: *Follow all these steps in order. The following tests should be done after an overnight cold soak. Set your vehicle up with the CH 48027 digital pressure gauge and J37287 fuel line with shutoff valve. Run vehicle to purge all air from fuel system and then shut vehicle off and let sit overnight. Unplug the injector harness connector. Next Morning: Key On and do not start engine – Using a CH 48027 Digital Pressure Gauge, verify “Key On” engine off, prime pulse fuel pressure should be between 55-60 psi. Record reading. This test will confirm correct operation of the in-tank fuel pump assembly. Use your Tech2 or GDS set in PSI to also confirm what the Fuel Rail Pressure Sensor is reading as this should always be close to what your Digital Fuel Pressure Gauge reads for low side pressure during this test. This will also confirm if there is an off-set with the Fuel Rail Pressure Sensor. Next you will crank the engine to see if it fires. With the injector harness connectors unplugged, the injectors are now electrically disabled so no fuel should be delivered to the engine. When cranking over the engine, if engine fires this means that one or more injectors have been leaking and have introduced fuel into one or more cylinders. Reconnect the injector harness connectors and start the engine, let the vehicle run for ten minutes and then shut vehicle down. You will now close the shut-off valve in the J37287 Fuel Line, which will now separate the engine side of the fuel system from the rear section of the return- less fuel system. Using the CH 48027 Digital Pressure Gauge, look for a drop in the high side of the fuel system, by monitoring low side pressure. With the J37287 valve closed, the system should hold at least 60 psi for a few hours. If you see a rapid decrease in fuel pressure, this would indicate a leaking High Pressure Fuel Pump or leaking injectors since the fuel pressure cannot bleed off to the tank as your J37287 valve is closed. All this is assuming that your gauge is good with no leaks or any leaks at the Schrader valve. Warranty Information The correction for this concern may be one of several repairs described in the diagnostic tips above. For vehicles repaired under warranty, please use the appropriate warranty labor operation based on the actual cause and repair. Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. © 2020 General Motors. All Rights Reserved.