How to replace the fuel injectors on GMC Sierra 1500?

The air cleaner outlet duct must be removed carefully before the replacement can start. Begin the fuel system pressure relief operation with ch-48027 or perform it without the tool then remove the engine wiring harness bracket nut. Next disconnect the electrical connectors from the evap purge solenoid, generator, map sensor, ignition coil main electrical connector and the fuel injectors. First mark each connector for later assembly before you move the cpa retainer with one click and press the tab to disconnect the Fuel Injector electrical connectors. Above the electronic throttle control device and Fuel Injector suite disconnect the electrical connectors while using the standard marking procedures. Uninstall those engine wiring harness clips which support the generator battery jumper cable and ignition coil bracket stud . Remove negative battery cable stud and terminals (2 and 3) from the Cylinder Head. First disconnect the wiring harness clip bolt from the generator bracket then place the harness aside while also removing the chassis fuel feed pipe quick connect fitting from the Fuel Rail. Lift out the evap purge solenoid from its position on the Fuel Rail by removing the bolts after unhitching evap tube fasteners at both the intake manifold and evap purge solenoid. Detach the Fuel Rail assembly while taking care not to harm either the injector electrical connector terminals or spray tips and apply caps over each fitting to stop any contamination. Evacuate all injectors from their bores while lifting the Fuel Rail in an even manner after cleaning it as needed. The installation of fuel injectors requires removing their retainers in combination with injectors and discarding the o-ring seals that sit at positions 2 and 4. First clean the engine oil to lubricate the new o-ring seals before attaching them to the injectors and installing the injectors into the Fuel Rail with retainers in place. After applying lubrication to the lower o-ring seals install the Fuel Rail onto the intake manifold while applying firm downward pressure until it reaches a complete position. First tighten 10 nm (89 lb in) Fuel Rail bolts before reinstalling the evap tube along with purge solenoid and making quick connect fittings to the evap canister and intake manifold. First reattach the Fuel Rail to the chassis feed pipe. After that, install the pcv hose before gathering all engine wiring harnesses over the engine. Take the generator bracket as the installation site for the wiring harness clip while tightening its clip bolt to 9 nm (80 lb in). Reinstall the negative battery cable stud on the right Cylinder Head unit while fastening it with 25 nm torque setting (18 lb ft). One should first reconnect the ignition coil main electrical connector then install the cpa retainer. Seed the electronic throttle control and Fuel Injector electrical connectors before tightening the cpa retainer. Fasten the engine wiring harness bracket nut with 5 nm (44 lb in) torque. After that, connect the MAP Sensor , generator and evap purge solenoid connectors followed by engine harness bracket assembly. Turn the ignition to on then off starting with two seconds of on time followed by ten seconds of off time before repeating the on step to check for any fluid leakage. Inspect for any leaks. Reinstall the air cleaner outlet duct at the end of the installation procedure.

How to replace the fuel injectors in the LLT (3.6L) engine on GMC Acadia?

The first step to replace llt (3.6L) fuel injectors requires the use of ch-48027 or does not need ch-48027 to relieve high side fuel system pressure. Record down the alignment spots of each injector before removing them for future installation. The Fuel Rail assembly for bank 1 or bank 2 needs removal from the system. The three Fuel Injector retaining rings must be discarded before disconnecting the electrical connector and extracting the direct fuel injectors together with their harness as an assembly. A j 2619-01 slide hammer with j-37281-a injector remover should be used for even injector extraction when required. The upper o-ring seal and plastic spacer and retaining ring and isolator cup along with teflon seal must be discarded from each Fuel Injector. When bores show signs of contamination you should clean them using the j-39313 adapter together with en-47909 cleaning kit. Place a new o-ring seal in gm p/n 12345610 silicon-free engine oil equivalent before installing the new upper o-ring seal combined with plastic spacer followed by retaining ring then isolator cup and teflon seal onto the fuel injectors. Magnet the en-48266-1 part from the en-48266 installer toward the injector tip without teflon seal lubrication followed by seal installation onto the en-48266-1 which should be drawn into the injector groove. The en-48266-2 deviates from the en-48266-1 so workers must mount it on the injector tip while using moderate hand pressure to stretch the teflon seal. Lay the direct fuel injectors and their harnesses as one unit after taking away the en-48266-2 while reattaching the electrical connector with injector positioning similar to removal procedures. Reinstall the fuel injection Fuel Rail assembly which belongs to bank 1 or bank 2.

OEM GMC Fuel Injector

Gas Injector

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102 Fuel Injectors found

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GMC Injector Part Number: 19244616
$118.27 MSRP: $240.20
You Save: $121.93 (51%)
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Product Specifications
- Other Name: Injector Kit, Fuel Injection; Fuel Injector
- Replaces: 17113124, 17113197
Fits the following GMC Models:
- Sonoma | 1994-1997 | SL, SLE, SLS | 4 Cyl 2.2 L GAS
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GMC Injector Part Number: 12580426
$107.23 MSRP: $217.78
You Save: $110.55 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Injector Assembly-Sequential Multiport Fuel; Fuel Injector; Injector, Fuel Injection
- Replaces: 88894361
Fits the following GMC Models:
- Sierra 1500 | 2002-2006 | Base, Denali, HT, Hybrid, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Sierra 1500 Classic | 2007 | Denali, Hybrid, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Sierra 1500 HD | 2005-2006, 2002-2003 | SLE, SLT | 8 Cyl 6.0 L GAS
- Sierra 1500 HD Classic | 2007 | SLE, SLT | 8 Cyl 6.0 L GAS
- Sierra 2500 | 2002-2004 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
- Sierra 2500 HD | 2002-2006 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Sierra 2500 HD Classic | 2007 | SL, SLE, SLT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Sierra 3500 | 2002-2006 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Sierra 3500 Classic | 2007 | SL, SLE, SLT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Yukon | 2002-2006 | Denali, SL, SLE, SLT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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GMC Injector Part Number: 12633789
$98.37 MSRP: $199.78
You Save: $101.41 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Injector Assembly-Direct Fuel; Fuel Injector; Injector, Fuel Injection
Fits the following GMC Models:
- Terrain | 2011-2017 | Denali, SL, SLE, SLT | 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
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GMC Injector Part Number: 12662564
$90.84 MSRP: $184.52
You Save: $93.68 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Injector Assembly-Direct Fuel; Fuel Injector; Injector, Fuel Injection
- Replaces: 12627093, 12662570, 12633913
Fits the following GMC Models:
- Acadia | 2017-2021 | SL, SLE, SLT | 4 Cyl 2.5 L GAS
- Canyon | 2015-2022 | Base, Elevation, Elevation Standard, SL, SLE, SLT | 4 Cyl 2.5 L GAS
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GMC Injector Part Number: 12608362
$94.78 MSRP: $192.52
You Save: $97.74 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Injector Assembly-Direct Fuel; Fuel Injector; Injector, Fuel Injection
Fits the following GMC Models:
- Terrain | 2010 | SLE, SLT | 4 Cyl 2.4 L GAS
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GMC Injector Part Number: 12671568
$95.68 MSRP: $194.32
You Save: $98.64 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Injector Assembly-Direct Fuel
- Replaced by: 12662571
Fits the following GMC Models:
- Terrain | 2018-2020 | Denali, SLE, SLT | 4 Cyl 2.0 L GAS
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GMC Injector Part Number: 19210900
$356.25 MSRP: $737.27
You Save: $381.02 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Injector Kit, Fuel Injection; Common Rail Injector; Fuel Injector
Fits the following GMC Models:
- Savana 2500 | 2011-2016 | Base | 8 Cyl 6.6 L DIESEL
- Savana 3500 | 2011-2016 | Base, LS, LT | 8 Cyl 6.6 L DIESEL
- Sierra 2500 HD | 2011-2014 | Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL
- Sierra 3500 HD | 2011-2014 | Denali, SLE, SLT, WT | 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL
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GMC Injector Part Number: 19244615
$72.80 MSRP: $227.14
You Save: $154.34 (68%)
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Product Specifications
- Other Name: Injector Kit, Fuel Injection; Fuel Injector
- Replaces: 17113221
Fits the following GMC Models:
- C2500 | 1996-2000 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 7.4 L GAS
- C2500 Suburban | 1996-1999 | Base, SLE, SLT | 8 Cyl 7.4 L GAS
- C3500 | 1996-2000 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 7.4 L GAS
- K2500 | 1996-2000 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 7.4 L GAS
- K2500 Suburban | 1996-1999 | Base, SLE, SLT | 8 Cyl 7.4 L GAS
- K3500 | 1996-2000 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 7.4 L GAS
- Savana 3500 | 1996-2000 | Base, SLE | 8 Cyl 7.4 L GAS
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GMC Injector Part Number: 23437819
$348.69 MSRP: $635.14
You Save: $286.45 (46%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Injector, Fuel Injection; Fuel Injector
Fits the following GMC Models:
- Sierra 2500 HD | 2015-2016 | Base, Denali, SLE, SLT | 8 Cyl 6.0 L CNG
- Sierra 3500 HD | 2015-2016 | Base, Denali, SLE, SLT | 8 Cyl 6.0 L CNG
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GMC Injector Part Number: 17111928
$150.31 MSRP: $269.62
You Save: $119.31 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Fuel Injector
- Replaced by: 19110532
Fits the following GMC Models:
- G1500 | 1987-1988 | Rally, Rally STX, Vandura | 6 Cyl 4.3 L GAS
- G2500 | 1987-1988 | Rally, Rally STX, Vandura | 6 Cyl 4.3 L GAS
- G3500 | 1987-1988 | Vandura, Vandura Special | 6 Cyl 4.3 L GAS
- R1500 | 1987 | Base, High Sierra, Sierra Classic | 6 Cyl 4.3 L GAS
- R2500 | 1987 | Base, High Sierra, Sierra Classic | 6 Cyl 4.3 L GAS
- V1500 | 1987 | Base, High Sierra, Sierra Classic | 6 Cyl 4.3 L GAS
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GMC Injector Part Number: 12732623
$59.96 MSRP: $108.52
You Save: $48.56 (45%)
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Product Specifications
- Other Name: Injector Kit-Multiport Fuel; Injector Kit, Fuel Injection
- Replaces: 12726901, 19420648
Fits the following GMC Models:
- Sierra 1500 | 2023 | AT4, AT4X, Denali, Denali Ultimate, SLT | 8 Cyl 6.2 L GAS
- Yukon | 2022-2023 | AT4, Denali, Denali Ultimate | 8 Cyl 6.2 L GAS
- Yukon XL | 2022-2023 | AT4, Denali, Denali Ultimate | 8 Cyl 6.2 L GAS
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GMC Injector Part Number: 12663380
$138.37 MSRP: $281.04
You Save: $142.67 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Injector, Fuel Injection; Fuel Injector
- Replaces: 12634491
Fits the following GMC Models:
- Acadia | 2012-2016 | Denali, SL, SLE, SLT | 6 Cyl 3.6 L GAS
- Acadia Limited | 2017 | Base | 6 Cyl 3.6 L GAS
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GMC Injector Part Number: 19110532
$150.31 MSRP: $269.62
You Save: $119.31 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Injector, Fuel; Fuel Injector; Fuel Injector Kit, Throttle Body/Carburetor; Injector Kit, Throttle Body/Carburetor
- Replaces: 17111929, 17112521, 17111468, 17111931, 17111930, 17111928
Fits the following GMC Models:
- C1500 | 1988-1995 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX, Sierra Special | 4.3L V6, 6 Cyl 4.3 L GAS
- C2500 | 1988-1995 | Sierra, Sierra SL, Sierra SLE, Sierra SLX | 4.3L V6, 6 Cyl 4.3 L GAS
- Caballero | 1986-1987 | Amarillo, Base, Diablo | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS
- G1500 | 1987-1995 | Rally, Rally STX, Vandura | 4.3L V6, 6 Cyl 4.3 L GAS
- G2500 | 1987-1995 | Rally, Rally STX, Vandura | 4.3L V6, 6 Cyl 4.3 L GAS
- G3500 | 1987-1996 | Magnavan, Rally, Rally Camper Special, Rally STX, Vandura, Vandura Special | 4.3L V6, 6 Cyl 4.3 L GAS
- Jimmy | 1992-1994 | 4.3L V6
- K1500 | 1988-1995 | Sierra, Sierra SL, Sierra SLE, Sierra SLS, Sierra SLT, Sierra SLX, Sierra Special, Sierra Sport | 4.3L V6, 6 Cyl 4.3 L GAS
- K2500 | 1988-1995 | Sierra, Sierra SL, Sierra SLE, Sierra SLX | 4.3L V6, 6 Cyl 4.3 L GAS
- R1500 | 1987 | Base, High Sierra, Sierra Classic | 6 Cyl 4.3 L GAS
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GMC Injector Part Number: 12733960
$51.95 MSRP: $94.02
You Save: $42.07 (45%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Injector Assembly-Direct Fuel; Injector, Fuel Injection
- Replaced by: 12739680
- Replaces: 12698632, 12689534
Fits the following GMC Models:
- Canyon | 2023 | AT4, AT4X, Denali, Elevation | 4 Cyl 2.7 L GAS
- Sierra 1500 | 2019-2023 | Base, Elevation, Pro, SLE | 4 Cyl 2.7 L GAS
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GMC Injector Part Number: 55513509
$226.33 MSRP: $637.26
You Save: $410.93 (65%)
ADD TO CART
Product Specifications
- Other Name: Injector Kit-Multiport Fuel; Fuel Injector; Injector Kit, Fuel Injection
- Replaces: 55490914
Fits the following GMC Models:
- Canyon | 2021-2022 | AT4, Denali, Elevation | 4 Cyl 2.8 L DIESEL
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GMC Injector Part Number: 12702932
$365.49 MSRP: $661.52
You Save: $296.03 (45%)
ADD TO CART
Product Specifications
- Other Name: Injector Kit-Multiport Fuel; Fuel Injector; Injector Kit, Fuel Injection
Fits the following GMC Models:
- Canyon | 2019-2020 | All Terrain, Denali, SLE, SLT | 4 Cyl 2.8 L DIESEL
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GMC Injector Part Number: 17112249
$137.76 MSRP: $247.10
You Save: $109.34 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Fuel Injector
- Replaced by: 19110533
Fits the following GMC Models:
- G3500 | 1990 | Magnavan, Rally, Rally Camper Special, Rally STX, Vandura, Vandura Special | 8 Cyl 7.4 L GAS
- R2500 Suburban | 1990 | Base, SLE | 8 Cyl 7.4 L GAS
- R3500 | 1990 | Base, SLE | 8 Cyl 7.4 L GAS
- V3500 | 1990 | Base, SLE | 8 Cyl 7.4 L GAS
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GMC Injector Part Number: 17111929
$150.31 MSRP: $269.62
You Save: $119.31 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Fuel Injector
- Replaced by: 19110532
Fits the following GMC Models:
- G1500 | 1987-1988 | Rally, Rally STX, Vandura | 6 Cyl 4.3 L GAS
- G2500 | 1987-1988 | Rally, Rally STX, Vandura | 6 Cyl 4.3 L GAS
- G3500 | 1987-1988 | Vandura, Vandura Special | 6 Cyl 4.3 L GAS
- R1500 | 1987 | Base, High Sierra, Sierra Classic | 6 Cyl 4.3 L GAS
- R2500 | 1987 | Base, High Sierra, Sierra Classic | 6 Cyl 4.3 L GAS
- V1500 | 1987 | Base, High Sierra, Sierra Classic | 6 Cyl 4.3 L GAS
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GMC Injector Part Number: 88894353
$120.24 MSRP: $244.20
You Save: $123.96 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Injector, Fuel Injection; Fuel Injector
Fits the following GMC Models:
- Safari | 2002-2005 | Base, SL, SLE, SLT | 6 Cyl 4.3 L GAS
- Savana 1500 | 2003-2014 | Base, LS, LT, SLE | 6 Cyl 4.3 L GAS
- Savana 2500 | 2003-2006 | Base, SLE | 6 Cyl 4.3 L GAS
- Sierra 1500 | 2002-2013 | Base, HT, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS
- Sierra 1500 Classic | 2007 | SL, WT | 6 Cyl 4.3 L GAS
- Sonoma | 2003-2004 | SL, SLS | 6 Cyl 4.3 L GAS
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GMC Injector Part Number: 19420033
$394.84 MSRP: $741.48
You Save: $346.64 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Injector Kit, Fuel Injection; Fuel Injector; Injector, Fuel Injection
- Replaces: 22991067
Fits the following GMC Models:
- Sierra 2500 HD | 2014 | Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL
- Sierra 3500 HD | 2014 | Denali, SLE, SLT, WT | 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL

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GMC Fuel Injector

Choose OEM Fuel Injector, you're making the optimal decision for superior quality and perfect performance. You can feel confident because each component goes through stringent quality checks. Every part is carefully built to comply with GMC's factory specifications. You'll enjoy a smooth, worry-free installation that fits just right. At ChevyPartsDeal.com, you'll find it easy to get top-quality OEM GMC Fuel Injector. You can shop at highly competitive prices and protect your budget. All our genuine GMC parts include a dependable manufacturer's warranty. You'll also appreciate our straightforward return policy and swift delivery services for extra convenience.

GMC Fuel Injector provides accurate bursts of fuel that boost the power and efficiency of all the engines. GMC is a company that has based its reputation on rugged trucks and SUVs with tough steel frame and a smooth ride suspension, quiet cabins and clever features such as surround vision and hitch guidance which have made these products stay confident in urban traffic or in the rough workplace. The brand has been capability-oriented since its inception in 1901 and it has tested every model it offers to be able to carry heavy loads without compromising comfort and the MultiPro tailgate offered demonstrates that GMC is a company that creates practical solutions that make everyday life easier. Reliable engines, extensive performance inspections and regular updates on technology demonstrate that GMC knows what its owners expect of a professional grade automobile and that consistent reliability keeps the trust levels skyrocketing through the generations. In this list the Fuel Injector is essential as it is applied to substitute the ancient carburetor technology with blistering speed electro mechanical control that transmits the appropriate quantity of gasoline straight to the combustion chambers as needed by the engine. Since all the Fuel Injectors fuel so precisely, engines start fast, idle well and use less gasoline, and they do not coke up the catalytic converters or oxygen sensors. When one of the Fuel Injectors becomes worn, such telltale signs as shaky hi-tops or low mileage are manifested, and by maintaining this part in prime condition, high-performance drivers identify.

GMC Fuel Injector Parts and Q&A

Injector
12609749
Q: How to replace the fuel injectors on GMC Sierra 1500?
A:
The air cleaner outlet duct must be removed carefully before the replacement can start. Begin the fuel system pressure relief operation with ch-48027 or perform it without the tool then remove the engine wiring harness bracket nut. Next disconnect the electrical connectors from the evap purge solenoid, generator, map sensor, ignition coil main electrical connector and the fuel injectors. First mark each connector for later assembly before you move the cpa retainer with one click and press the tab to disconnect the Fuel Injector electrical connectors. Above the electronic throttle control device and Fuel Injector suite disconnect the electrical connectors while using the standard marking procedures. Uninstall those engine wiring harness clips which support the generator battery jumper cable and ignition coil bracket stud . Remove negative battery cable stud and terminals (2 and 3) from the Cylinder Head. First disconnect the wiring harness clip bolt from the generator bracket then place the harness aside while also removing the chassis fuel feed pipe quick connect fitting from the Fuel Rail. Lift out the evap purge solenoid from its position on the Fuel Rail by removing the bolts after unhitching evap tube fasteners at both the intake manifold and evap purge solenoid. Detach the Fuel Rail assembly while taking care not to harm either the injector electrical connector terminals or spray tips and apply caps over each fitting to stop any contamination. Evacuate all injectors from their bores while lifting the Fuel Rail in an even manner after cleaning it as needed. The installation of fuel injectors requires removing their retainers in combination with injectors and discarding the o-ring seals that sit at positions 2 and 4. First clean the engine oil to lubricate the new o-ring seals before attaching them to the injectors and installing the injectors into the Fuel Rail with retainers in place. After applying lubrication to the lower o-ring seals install the Fuel Rail onto the intake manifold while applying firm downward pressure until it reaches a complete position. First tighten 10 nm (89 lb in) Fuel Rail bolts before reinstalling the evap tube along with purge solenoid and making quick connect fittings to the evap canister and intake manifold. First reattach the Fuel Rail to the chassis feed pipe. After that, install the pcv hose before gathering all engine wiring harnesses over the engine. Take the generator bracket as the installation site for the wiring harness clip while tightening its clip bolt to 9 nm (80 lb in). Reinstall the negative battery cable stud on the right Cylinder Head unit while fastening it with 25 nm torque setting (18 lb ft). One should first reconnect the ignition coil main electrical connector then install the cpa retainer. Seed the electronic throttle control and Fuel Injector electrical connectors before tightening the cpa retainer. Fasten the engine wiring harness bracket nut with 5 nm (44 lb in) torque. After that, connect the MAP Sensor , generator and evap purge solenoid connectors followed by engine harness bracket assembly. Turn the ignition to on then off starting with two seconds of on time followed by ten seconds of off time before repeating the on step to check for any fluid leakage. Inspect for any leaks. Reinstall the air cleaner outlet duct at the end of the installation procedure.
Injector
12669384
Q: How to replace the fuel injectors in the LLT (3.6L) engine on GMC Acadia?
A:
The first step to replace llt (3.6L) fuel injectors requires the use of ch-48027 or does not need ch-48027 to relieve high side fuel system pressure. Record down the alignment spots of each injector before removing them for future installation. The Fuel Rail assembly for bank 1 or bank 2 needs removal from the system. The three Fuel Injector retaining rings must be discarded before disconnecting the electrical connector and extracting the direct fuel injectors together with their harness as an assembly. A j 2619-01 slide hammer with j-37281-a injector remover should be used for even injector extraction when required. The upper o-ring seal and plastic spacer and retaining ring and isolator cup along with teflon seal must be discarded from each Fuel Injector. When bores show signs of contamination you should clean them using the j-39313 adapter together with en-47909 cleaning kit. Place a new o-ring seal in gm p/n 12345610 silicon-free engine oil equivalent before installing the new upper o-ring seal combined with plastic spacer followed by retaining ring then isolator cup and teflon seal onto the fuel injectors. Magnet the en-48266-1 part from the en-48266 installer toward the injector tip without teflon seal lubrication followed by seal installation onto the en-48266-1 which should be drawn into the injector groove. The en-48266-2 deviates from the en-48266-1 so workers must mount it on the injector tip while using moderate hand pressure to stretch the teflon seal. Lay the direct fuel injectors and their harnesses as one unit after taking away the en-48266-2 while reattaching the electrical connector with injector positioning similar to removal procedures. Reinstall the fuel injection Fuel Rail assembly which belongs to bank 1 or bank 2.