How to remove and reinstall the oil pump in an engine?

Remove the timing chains. After noting the installed position, remove the timing chain sprocket from the crankshaft. Remove the oil pump retaining bolts and slide the pump off the end of the crankshaft (Oil pump retaining bolts). Remove the timing chain guide from the oil pump housing then remove the oil pump cover and withdraw the rotors from the pump body. Remove the snap-ring from the side of the pump housing and withdraw the cap, spring and plunger from the oil pump housing. These components are the oil pressure relief valve assembly. Clean the components with solvent, dry them thoroughly and inspect for any obvious damage. Also check the bolt holes for damaged threads and the splined surfaces on the crankshaft sprocket for any apparent damage. If any of the components are scored, scratched or worn, replace the entire oil pump assembly. There are no serviceable parts currently available. If re-using the oil pump, assemble the pressure relief valve components and the rotors to the oil pump housing. Prior to installing the cover, prime the pump by pouring clean motor oil between the rotors. Install the cover and tighten the retaining bolts. Position the oil pump over the end of the crankshaft and align the flats on the crankshaft with the flats on the oil pump drive gear. Make sure the pump is fully seated against the block. Install the oil pump mounting bolts and tighten them to the torque. The remainder of installation is the reverse of removal. Add oil and coolant as necessary. Run the engine and check for oil and coolant leaks. Check the oil pressure.

Genuine GMC Acadia Oil Pump

Oil Fluid Pump

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

9 Oil Pumps found

View related parts
GMC Acadia Pump,Oil
Part Number: 12640448
$140.06 MSRP: $243.75
You Save: $103.69 (43%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: PUMP, Engine Oil Pump; Oil Pump, Water Pump
- Replaces: 12590152, 12590016, 12584298
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2017 GMC Acadia | SPORT UTILITY VEHICLE 2WD, SPORT UTILITY VEHICLE 4WD, SPORT UTILITY VEHICLE AWD | 6 Cyl 3.6L
View related parts
GMC Acadia Pump Assembly, Automatic Transmission Fluid
Part Number: 24289058
$204.93 MSRP: $356.69
You Save: $151.76 (43%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Assembly, A/Trns Fluid
- Replaces: 24265320, 24283150, 24278764, 24047152, 24287535
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2019 GMC Acadia | SLE SUV, SLE2 & ALL TERRAIN SUV, SLE2 SUV, SLT & ALL TERRAIN SUV, SLT SUV | 4 Cyl 2.5L
View related parts
GMC Acadia Pump Assembly, A/Trns Fluid (W/O Filter & Drvtrn)
Part Number: 24292171
$229.92 MSRP: $380.46
You Save: $150.54 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Assembly
- Replaced by: 24052581
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2021 GMC Acadia | DENALI SUV, SLE SUV, SLE2 SUV, SLT SUV | 6 Cyl 3.6L
View related parts
GMC Acadia Pump Assembly, A/Trns Fluid (W/O Filter & Drvtrn)
Part Number: 24292181
$228.96 MSRP: $378.86
You Save: $149.90 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Assembly
- Replaced by: 24052579
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2021 GMC Acadia | SLE SUV | 4 Cyl 2.5L
View related parts
GMC Acadia Pump Assembly, A/Trns Fluid (W/O Filter & Drvtrn)
Part Number: 24292176
$239.55 MSRP: $381.97
You Save: $142.42 (38%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaced by: 24052580
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2021 GMC Acadia | DENALI SUV, SLE SUV, SLT SUV | 4 Cyl 2.0L
View related parts
GMC Acadia Pump Assembly, Oil
Part Number: 12674460
$115.65 MSRP: $182.78
You Save: $67.13 (37%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: PUMP, Engine Oil Pump; Oil Pump
- Replaces: 12627211
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2021 GMC Acadia | SLE SUV, SLE2 & ALL TERRAIN SUV, SLE2 SUV, SLT & ALL TERRAIN SUV, SLT SUV | 4 Cyl 2.5L
View related parts
GMC Acadia Pump Assembly, Oil
Part Number: 12696174
$315.91 MSRP: $499.19
You Save: $183.28 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Pump
- Replaces: 12668981, 12666625, 12683664, 12687893
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2021 GMC Acadia | DENALI SUV, SLE SUV, SLE2 & ALL TERRAIN SUV, SLE2 SUV, SLT & ALL TERRAIN SUV, SLT SUV, SLT2 SUV | 6 Cyl 3.6L
View related parts
GMC Acadia Pump Assembly, Oil
Part Number: 55509155
$97.73 MSRP: $153.73
You Save: $56.00 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Pump
- Replaced by: 12724336
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2021 GMC Acadia | DENALI SUV, SLE SUV, SLT SUV | 4 Cyl 2.0L
View related parts
GMC Acadia PUMP ASM-A/TRNS FLUID (W/O DRVTRN & FILTER)
Part Number: 24043453
$215.06 MSRP: $339.84
You Save: $124.78 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 24052725
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2019 GMC Acadia | SLE SUV, SLE2 & ALL TERRAIN SUV, SLE2 SUV, SLT & ALL TERRAIN SUV, SLT SUV | 4 Cyl 2.5L

GMC Acadia Oil Pump Parts Questions & Experts Answers

Pump,Oil
12640448
Q: How to remove and reinstall the oil pump in an engine?
A: Remove the Timing Chains. After noting the installed position, remove the timing chain sprocket from the crankshaft. Remove the oil pump retaining bolts and slide the pump off the end of the crankshaft (Oil pump retaining bolts). Remove the timing chain guide from the oil pump housing then remove the oil pump cover and withdraw the rotors from the pump body. Remove the snap-ring from the side of the pump housing and withdraw the cap, spring and plunger from the oil pump housing. These components are the oil pressure relief valve assembly. Clean the components with solvent, dry them thoroughly and inspect for any obvious damage. Also check the bolt holes for damaged threads and the splined surfaces on the crankshaft sprocket for any apparent damage. If any of the components are scored, scratched or worn, replace the entire oil pump assembly. There are no serviceable parts currently available. If re-using the oil pump, assemble the pressure relief valve components and the rotors to the oil pump housing. Prior to installing the cover, prime the pump by pouring clean motor oil between the rotors. Install the cover and tighten the retaining bolts. Position the oil pump over the end of the crankshaft and align the flats on the crankshaft with the flats on the oil pump drive gear. Make sure the pump is fully seated against the block. Install the oil pump mounting bolts and tighten them to the torque. The remainder of installation is the reverse of removal. Add oil and coolant as necessary. Run the engine and check for oil and coolant leaks. Check the oil pressure.