How to Change the Transmission Oil Cooler Hose on GMC Sierra 1500?

The first step to replace the transmission fluid cooler hose/pipe begins with removing the front grill assembly. The transmission fluid cooler hose needs to be removed from both the auxiliary Oil Cooler and the Radiator during the first step. The first step requires vehicle elevation and subsequent removal of the transmission cooling line bracket retaining bolt followed by draining all transmission and oil cooling lines from the vehicle. During installation you should connect the transmission Oil Cooler lines first to the vehicle before connecting them to the transmission while also fastening and tightening the transmission cooler line bracket bolt to 22 nm (16 lb ft). The installation requires you to lower the vehicle while attaching both the transmission fluid cooler hose to the Radiator and auxiliary Oil Cooler. The last installation step involves solving the front grill assembly.

OEM GMC Sierra 1500 Transmission Oil Cooler Hose

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11 Transmission Oil Cooler Hoses found

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GMC Sierra 1500 Outlet Pipe
Part Number: 25999419
$101.48 MSRP: $174.28
You Save: $72.80 (42%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pipe Assembly-Transmission Fluid Cooler; Pipe, Transmission Oil Cooler
- Replaces: 15908473
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2011 GMC Sierra 1500 | Denali, Hybrid, SL, SLE, SLT, WT, XFE | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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GMC Sierra 1500 Outlet Pipe, Upper
Part Number: 25999415
$34.43 MSRP: $56.72
You Save: $22.29 (40%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Pipe Assembly-Transmission Fluid Cooler Upper; Pipe, Transmission Oil Cooler
- Position: Upper
- Replaces: 25808930
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2013 GMC Sierra 1500 | Denali, Hybrid, SL, SLE, SLT, WT, XFE | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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GMC Sierra 1500 Inlet Pipe, Upper
Part Number: 15809053
$39.15 MSRP: $66.65
You Save: $27.50 (42%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pipe, Transmission Fluid Cooler Upper; Outlet Pipe; Pipe, Transmission Oil Cooler
- Position: Upper
- Replaces: 15052885, 15710122, 15190203
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 GMC Sierra 1500 | SL, WT | 6 Cyl 4.3 L GAS
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GMC Sierra 1500 Cooler Pipe
Part Number: 87847291
$184.74 MSRP: $290.63
You Save: $105.89 (37%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pipe, Transmission Oil Cooler
- Replaced by: 85669017
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2023 GMC Sierra 1500 | AT4, AT4X, Denali, Denali Ultimate, Elevation, Pro, SLE, SLT | 4 Cyl 2.7 L GAS, 6 Cyl 3.0 L DIESEL, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L GAS
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GMC Sierra 1500 Cooler Pipe
Part Number: 85563686
$135.66 MSRP: $213.42
You Save: $77.76 (37%)
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Product Specifications
- Other Name: Pipe, Transmission Oil Cooler; Line
- Replaces: 84527055, 85149480, 84885689, 84651356, 85532815
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2021 GMC Sierra 1500 | AT4, Base, Denali, Elevation, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
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GMC Sierra 1500 Cooler Pipe
Part Number: 85563684
$103.42 MSRP: $161.99
You Save: $58.57 (37%)
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Product Specifications
- Other Name: Pipe, Transmission Oil Cooler
- Replaces: 85149481, 84527054, 84651355, 85532816, 84816304
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2021 GMC Sierra 1500 | Base | 6 Cyl 4.3 L GAS
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GMC Sierra 1500 Cooler Pipe
Part Number: 85532819
$106.97 MSRP: $167.55
You Save: $60.58 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pipe, Transmission Oil Cooler; Line
- Replaced by: 86584017
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | AT4, AT4X, Denali, Denali Ultimate, SLT | 8 Cyl 6.2 L GAS
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GMC Sierra 1500 Cooler Pipe
Part Number: 85529071
$114.08 MSRP: $179.46
You Save: $65.38 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe, Transmission Oil Cooler; Line
- Replaced by: 86584016
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2023 GMC Sierra 1500 | Denali, Elevation, Pro, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
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GMC Sierra 1500 Cooler Pipe
Part Number: 85149482
$140.32 MSRP: $220.75
You Save: $80.43 (37%)
ADD TO CART
Product Specifications
- Other Name: Pipe, Transmission Oil Cooler; Line
- Replaced by: 85532818
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | AT4, Base, Denali, Elevation, Pro, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
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GMC Sierra 1500 Cooler Pipe
Part Number: 24289109
$63.43 MSRP: $100.68
You Save: $37.25 (37%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe, Transmission Oil Cooler; Transmission Oil Cooler Line; Line
- Replaced by: 85075442
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | Base, Elevation, Pro, SLE | 4 Cyl 2.7 L GAS
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GMC Sierra 1500 Cooler Pipe
Part Number: 86818095
$179.97 MSRP: $309.49
You Save: $129.52 (42%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe, Transmission Oil Cooler; Line
- Replaces: 84651358, 84527053, 84846539, 84620868, 84885688, 84889805, 85532817
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2023 GMC Sierra 1500 | AT4, AT4X, Denali, Denali Ultimate, Elevation, SLE, SLT | 6 Cyl 3.0 L DIESEL

GMC Sierra 1500 Transmission Oil Cooler Hose

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GMC Sierra 1500 Transmission Oil Cooler Hose Parts Questions & Experts Answers

Outlet Pipe, Upper
25999415
Q: How to Change the Transmission Oil Cooler Hose on GMC Sierra 1500?
A: The first step to replace the transmission fluid cooler hose/pipe begins with removing the front grill assembly. The transmission fluid cooler hose needs to be removed from both the auxiliary Oil Cooler and the Radiator during the first step. The first step requires vehicle elevation and subsequent removal of the transmission cooling line bracket retaining bolt followed by draining all transmission and oil cooling lines from the vehicle. During installation you should connect the transmission Oil Cooler lines first to the vehicle before connecting them to the transmission while also fastening and tightening the transmission cooler line bracket bolt to 22 nm (16 lb ft). The installation requires you to lower the vehicle while attaching both the transmission fluid cooler hose to the Radiator and auxiliary Oil Cooler. The last installation step involves solving the front grill assembly.