How to perform a transmission fluid and Transmission Filter replacement on Chevrolet Avalanche,Silverado,Suburban,Tahoe and GMC Sierra,Yukon,Yukon Denali,Yukon XL?

Always at the designated maintenance intervals, there should be a changing of transmission fluid. However, do not commence until the engine is completely cooled. Begin by getting a fresh pan gasket, new filter and transmission fluid. The tools to have include drain pan with sufficient capacity, clean rags, newspapers, jackstands for secure vehicle support, floor jack and others. Elevate the vehicle and secure it on jackstands if pan removal is obstructed by exhaust system front section. Underneath the transmission pan have a drain pan in position, remove drain plug (if available), allow fluid to drain till trickling stops and then replace the plug again. Remove bolts from three sides of the pan if there's no drain plug; loosen the remaining ones slightly and lower the pan to get rid of most of the fluid in it. Then remove bolts carefully lower the pan and let out all the remaining fluid in it. Remove heat shield close to catalytic converter on right hand side to access pan bolts. On driver's side, for accessing pan bolts remove shift linkage. Undoing transmission pan mounting bolts with screwdriver gently pry off the pan. Clean up gasket surface thoroughly on transmission to get rid of any leftover old gasket or sealant materials thereon.Turn off your vehicle and disconnect 12V battery negative terminal.New one must be fitted while referring to diagrams & instructions given by manufacturer as this cannot be done any other way.Make sure that new gasket is attached to clean transmission pan's gasket surface before placing back onto transmission & tightening all bolts.Refer to powertrain control/emissions diagnosis manual for proper diagnostic steps.Remove heat shield close to catalytic converter on right hand side to access pan bolts.Do not drive anymore; rather shift lever will stay put at any chosen gear.The power from engine has been evenly distributed through five gears but only one is used at any given moment.Clean up gasket surface thoroughly on transmission to get rid of any leftover old gasket or sealant materials thereon. This must be done with the engine running at fast idle speed, transmission in Park and cycling through each gear position back to Park before returning to idle.Thus the fluid level will be low and it will have to be added until it reaches the mark on the dipstick but without overfilling.Turn off your vehicle and disconnect 12V battery negative terminal.New one must be fitted while referring to diagrams & instructions given by manufacturer as this cannot be done any other way.Make sure that new gasket is attached to clean transmission pan's gasket surface before placing back onto transmission & tightening all bolts.Refer to powertrain control/emissions diagnosis manual for proper diagnostic steps.With the engine running at a fast idle and the transmission in Park, cycle the gear selector through each range and back to Park before letting the engine idle.Tighten each bolt gradually to the specified torque. Reinstall components removed for pan bolt access, lower the vehicle, and add about 4 quarts of the specified automatic transmission fluid through the filler tube.The above mentioned procedure should be performed every 30,000 miles.As such, the fluid level is likely to be low hence more should be included until it hits line on dipstick avoiding overfilling.Finally look out for leaks beneath vehicle during first trips and when transmission is hot check again its fluid level.

Genuine GMC Sierra Automatic Transmission Filter

AT Filter

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GMC Sierra Filter Kit,Automatic Transmission Fluid
Part Number: 24208576
$37.71 MSRP: $68.57
You Save: $30.86 (46%)
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Product Specifications
- Other Name: FILTER KIT, Oil Pan Pump Suction; Filter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999-2013 GMC Sierra | 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CREW CAB 1/2 TON, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 4.8L Flex, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.2L, 8 Cyl 6.2L Flex
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GMC Sierra Filter,Automatic Transmission Fluid (External)
Part Number: 29539579
$34.11 MSRP: $61.18
You Save: $27.07 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: FILTER, Oil Pan Pump Suction; Filter
- Replaces: 29537268
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2019 GMC Sierra | 1 TON CREW CAB, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 2500 REGULAR CAB STANDARD BOX, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 CREW CAB LONG BOX, 3500 CREW CAB ONLY, 3500 CREW CAB STANDARD BOX, 3500 DOUBLE CAB LONG BOX, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB, CREW CAB 1 TON, CREW CAB 1 TON 119.0, CREW CAB 1 TON 137.0, CREW CAB 2500 LONG BOX, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 3/4 TON, DOUBLE CAB 2500 LONG BOX, DOUBLE CAB 2500 STANDARD BOX, EXTENDED CAB 1 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CAB CHASSIS 1 TON 161.5, EXTENDED CREW CAB 1 TON 161.5, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON, REGULAR CAB CHASSIS 1 TON 137.0, REGULAR CAB CHASSIS 1 TON 161.5 | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
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GMC Sierra Filter Kit,Automatic Transmission Fluid
Part Number: 24210956
$38.60 MSRP: $69.22
You Save: $30.62 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: FILTER KIT, Oil Pan Pump Suction; Filter
- Replaces: 24208847
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999-2007 GMC Sierra | 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.2L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
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GMC Sierra Filter,Automatic Transmission Fluid
Part Number: 19329654
$37.04 MSRP: $66.47
You Save: $29.43 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: FILTER, Oil Pan Pump Suction
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2010 GMC Sierra | 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB, CREW CAB 1 TON, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 3/4 TON, EXTENDED CAB 1 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CAB CHASSIS 1 TON 161.5, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON, REGULAR CAB CHASSIS 1 TON 137.0, REGULAR CAB CHASSIS 1 TON 161.5 | 8 Cyl 5.3L, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
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GMC Sierra Filter,Automatic Transmission Fluid (Internal)
Part Number: 29542833
$44.34 MSRP: $79.56
You Save: $35.22 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: FILTER, Oil Pan Pump Suction; Filter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2011-2019 GMC Sierra | 1 TON CREW CAB, 2500 CREW CAB STANDARD BOX, 2500 REGULAR CAB, 2500 REGULAR CAB STANDARD BOX, 3500 CREW CAB LONG BOX, 3500 CREW CAB ONLY, 3500 CREW CAB STANDARD BOX, 3500 DOUBLE CAB LONG BOX, 3500 REGULAR CAB, CREW CAB 1 TON, CREW CAB 1 TON 119.0, CREW CAB 1 TON 137.0, CREW CAB 2500 LONG BOX, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 3/4 TON, DOUBLE CAB 2500 LONG BOX, DOUBLE CAB 2500 STANDARD BOX, EXTENDED CAB 1 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CAB CHASSIS 1 TON 161.5, EXTENDED CREW CAB 1 TON 161.5, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON, REGULAR CAB CHASSIS 1 TON 137.0, REGULAR CAB CHASSIS 1 TON 161.5 | 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.6L Diesel
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GMC Sierra Filter,Automatic Transmission Fluid (Internal)
Part Number: 29537965
$39.93 MSRP: $72.60
You Save: $32.67 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: FILTER, Oil Pan Pump Suction; Filter
- Replaces: 29537514
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2005 GMC Sierra | 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 6.0L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
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GMC Sierra Filter Kit,Automatic Transmission Fluid (Pri & Auxiliary)
Part Number: 19168277
$33.29 MSRP: $59.73
You Save: $26.44 (45%)
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Product Specifications
- Other Name: FILTER KIT, Oil Pan Pump Suction; Filter, Filter Assembly
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2013 GMC Sierra | CREW CAB 1/2 TON, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 4.8L Flex, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.2L Flex
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GMC Sierra FILTER KIT,A/TRNS FLUID (W/SEAL)
Part Number: 24294355
$55.45 MSRP: $99.46
You Save: $44.01 (45%)
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Product Specifications
- Other Name: Filter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2021 GMC Sierra | CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, CREW CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON | 6 Cyl 3.0L Diesel, 8 Cyl 5.3L, 8 Cyl 6.2L
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GMC Sierra FILTER KIT,A/TRNS FLUID
Part Number: 24298004
$48.48 MSRP: $86.96
You Save: $38.48 (45%)
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Product Specifications
- Other Name: Filter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2021 GMC Sierra | CREW CAB 1 TON CHASSIS 137.0, CREW CAB 6'6" BOX 1 TON, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 1 TON, CREW CAB 8' BOX 3/4 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 1 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CREW CAB 1 TON CHASSIS 161.5, REGULAR CAB 1 TON CHASSIS 137.0, REGULAR CAB 1 TON CHASSIS 161.5, REGULAR CAB 8' BOX 1 TON, REGULAR CAB 8' BOX 3/4 TON | 8 Cyl 6.6L Diesel
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GMC Sierra Filter Kit,Automatic Transmission Fluid
Part Number: 24258269
$40.05 MSRP: $72.81
You Save: $32.76 (45%)
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Product Specifications
- Other Name: FILTER KIT, Transmission Oil Suction Tube; Filter, Pan Gasket
- Replaces: 24250826
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2021 GMC Sierra | CREW CAB 1 TON CHASSIS 137.0, CREW CAB 6'6" BOX 1 TON, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 1 TON, CREW CAB 8' BOX 3/4 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 1 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CREW CAB 1 TON CHASSIS 161.5, REGULAR CAB 1 TON CHASSIS 137.0, REGULAR CAB 1 TON CHASSIS 161.5, REGULAR CAB 8' BOX 1 TON, REGULAR CAB 8' BOX 3/4 TON | 8 Cyl 6.6L
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GMC Sierra Filter Assembly, Automatic Transmission Fluid
Part Number: 24274402
$19.88 MSRP: $35.66
You Save: $15.78 (45%)
Product Specifications
- Other Name: FILTER, Oil Pan Pump Suction; Filter, Pan Gasket
- Replaced by: 24295812
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2021 GMC Sierra | 1500 CREW CAB, 1500 CREW CAB STANDARD BOX, 1500 DOUBLE CAB STANDARD BOX, CREW CAB 1/2 TON, CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, CREW CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON | 4 Cyl 2.7L, 8 Cyl 5.3L, 8 Cyl 6.2L
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GMC Sierra Filter Kit,Automatic Transmission Fluid
Part Number: 24236933
$38.31 MSRP: $68.71
You Save: $30.40 (45%)
Product Specifications
- Other Name: FILTER KIT, Oil Pan Pump Suction; Filter
- Replaces: 24238229
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2021 GMC Sierra | 1 TON CREW CAB, 1500 CREW CAB, 1500 CREW CAB STANDARD BOX, 1500 DOUBLE CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB STANDARD BOX, 2500 REGULAR CAB, 2500 REGULAR CAB STANDARD BOX, 3500 CREW CAB LONG BOX, 3500 CREW CAB ONLY, 3500 CREW CAB STANDARD BOX, 3500 DOUBLE CAB LONG BOX, 3500 REGULAR CAB, CREW CAB 1 TON, CREW CAB 1 TON 119.0, CREW CAB 1 TON 137.0, CREW CAB 1/2 TON, CREW CAB 2500 LONG BOX, CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, CREW CAB 6'6" BOX 1/2 TON, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 3/4 TON, DOUBLE CAB 2500 LONG BOX, DOUBLE CAB 2500 STANDARD BOX, EXTENDED CAB 1 TON, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 1/2 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CAB CHASSIS 1 TON 161.5, EXTENDED CREW CAB 1 TON 161.5, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON, REGULAR CAB CHASSIS 1 TON 137.0, REGULAR CAB CHASSIS 1 TON 161.5 | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 4.8L Flex, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.2L, 8 Cyl 6.2L Flex, 8 Cyl 6.6L Diesel, 8 Cyl5.3L
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GMC Sierra Filter Pkg,Trans Fluid
Part Number: 24227080
Product Specifications
- Other Name: FILTER, Oil Pan Pump Suction
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 GMC Sierra | 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.2L

GMC Sierra Automatic Transmission Filter Parts Questions & Experts Answers

Filter,Automatic Transmission Fluid (Internal)
29542833
Q: How to perform a transmission fluid and Transmission Filter replacement on Chevrolet Avalanche,Silverado,Suburban,Tahoe and GMC Sierra,Yukon,Yukon Denali,Yukon XL?
A: Always at the designated maintenance intervals, there should be a changing of transmission fluid. However, do not commence until the engine is completely cooled. Begin by getting a fresh pan gasket, new filter and transmission fluid. The tools to have include drain pan with sufficient capacity, clean rags, newspapers, jackstands for secure vehicle support, floor jack and others. Elevate the vehicle and secure it on jackstands if pan removal is obstructed by exhaust system front section. Underneath the transmission pan have a drain pan in position, remove drain plug (if available), allow fluid to drain till trickling stops and then replace the plug again. Remove bolts from three sides of the pan if there's no drain plug; loosen the remaining ones slightly and lower the pan to get rid of most of the fluid in it. Then remove bolts carefully lower the pan and let out all the remaining fluid in it. Remove heat shield close to catalytic converter on right hand side to access pan bolts. On driver's side, for accessing pan bolts remove shift linkage. Undoing transmission pan mounting bolts with screwdriver gently pry off the pan. Clean up gasket surface thoroughly on transmission to get rid of any leftover old gasket or sealant materials thereon.Turn off your vehicle and disconnect 12V battery negative terminal.New one must be fitted while referring to diagrams & instructions given by manufacturer as this cannot be done any other way.Make sure that new gasket is attached to clean transmission pan's gasket surface before placing back onto transmission & tightening all bolts.Refer to powertrain control/emissions diagnosis manual for proper diagnostic steps.Remove heat shield close to catalytic converter on right hand side to access pan bolts.Do not drive anymore; rather shift lever will stay put at any chosen gear.The power from engine has been evenly distributed through five gears but only one is used at any given moment.Clean up gasket surface thoroughly on transmission to get rid of any leftover old gasket or sealant materials thereon. This must be done with the engine running at fast idle speed, transmission in Park and cycling through each gear position back to Park before returning to idle.Thus the fluid level will be low and it will have to be added until it reaches the mark on the dipstick but without overfilling.Turn off your vehicle and disconnect 12V battery negative terminal.New one must be fitted while referring to diagrams & instructions given by manufacturer as this cannot be done any other way.Make sure that new gasket is attached to clean transmission pan's gasket surface before placing back onto transmission & tightening all bolts.Refer to powertrain control/emissions diagnosis manual for proper diagnostic steps.With the engine running at a fast idle and the transmission in Park, cycle the gear selector through each range and back to Park before letting the engine idle.Tighten each bolt gradually to the specified torque. Reinstall components removed for pan bolt access, lower the vehicle, and add about 4 quarts of the specified automatic transmission fluid through the filler tube.The above mentioned procedure should be performed every 30,000 miles.As such, the fluid level is likely to be low hence more should be included until it hits line on dipstick avoiding overfilling.Finally look out for leaks beneath vehicle during first trips and when transmission is hot check again its fluid level.