How to replace the catalytic converter on 4.3L, 4.8L, and 5.3L engines on 2004 GMC Sierra 1500?

In order to replace the Catalytic Converter on 4.3l, 4.8l, and 5.3l engines, raise and support the vehicle first. If equipped, unclip the Oxygen Sensor connection from the floor reinforcement and then separate the Oxygen Sensor electrical connector and detach the Oxygen Sensor clips from the frame. Pull off the connector position assurance (CPA) retainers and the Oxygen Sensor electric connectors. Clip the oxygen sensors electrical connectors from the hose clip as well as transmission crossmember and disconnect the cpa retainers and the Oxygen Sensor electrical connectors (1, 2). Give way the left as well as right exhaust manifold pipe nuts, along with exhaust muffler nuts then remove the Catalytic Converter. If necessary, deinstall the oxygen sensors. That is if required, for installation install the oxygen sensors and use anti-seize compound gm p/n 12377953, or equivalent to the threads of the old oxygen sensors, tighten to 42 nm (31 ft. Lbs.). Next install the Catalytic Converter and new exhaust manifold pipe seal to the exhaust manifolds. Place the right and left exhaust manifold pipe nuts snugly into place and then tighten down to 50 nm (39 ft. Lbs). Put the exhaust muffler nuts and tighten them up to 40 nm (30 ft. Lbs.). Connect the Oxygen Sensor electrical connectors (1, 2) and the cpa retainers, ticking the clips of oxygen sensors electrical connector to the hose clip and transmission cross member. Connect the Oxygen Sensor electrical connecters and cpa retainers, attaching the clip around the engine harness and Oxygen Sensor pigtail and connecting the Oxygen Sensor electrical connecter. If available, attach the Oxygen Sensor connection to the floor reinforcement prior to lowering the vehicle.

OEM 2004 GMC Sierra 1500 Catalytic Converter

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6 Catalytic Converters found

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2004 GMC Sierra 1500 Catalytic Converter, Driver Side
Part Number: 15077751
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Front Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Driver Side
- Item Weight: 28.80 Pounds
- Item Dimensions: 63.6 x 28.4 x 15.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 15077751
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 GMC Sierra 1500 Submodels:
- Base, C3, Denali, SLE, SLT, WT | 8 Cyl 6.0 L GAS
View related parts
2004 GMC Sierra 1500 Catalytic Converter, Driver Side
Part Number: 15077755
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Front Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Driver Side
- Replaces: 15729035
- Item Weight: 28.00 Pounds
- Item Dimensions: 54.1 x 30.6 x 16.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 15077755
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 GMC Sierra 1500 Submodels:
- Base, C3, Denali, SLE, SLT, WT | 8 Cyl 6.0 L GAS
View related parts
2004 GMC Sierra 1500 Catalytic Converter, Passenger Side
Part Number: 15091830
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Front Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Passenger Side
- Replaces: 15013591
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 15091830
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 GMC Sierra 1500 Submodels:
- Base, C3, Denali, SLE, SLT, WT | 8 Cyl 6.0 L GAS
View related parts
2004 GMC Sierra 1500 Catalytic Converter, Passenger Side
Part Number: 15077752
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Front Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Passenger Side
- Item Weight: 30.30 Pounds
- Item Dimensions: 57.4 x 14.4 x 8.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 15077752
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 GMC Sierra 1500 Submodels:
- Base, C3, Denali, SLE, SLT, WT | 8 Cyl 6.0 L GAS
View related parts
2004 GMC Sierra 1500 Catalytic Converter, Driver Side
Part Number: 19420127
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"; Exhaust Pipe; Front Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Driver Side
- Replaces: 15199817
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 19420127
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 GMC Sierra 1500 Submodels:
- Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L GAS
View related parts
2004 GMC Sierra 1500 Catalytic Converter
Part Number: 19418928
$1822.14 MSRP: $2723.32
You Save: $901.18 (34%)
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Replaces: 15036169, 15076458, 15756278, 10395212, 15052911, 15076459, 15756279, 15246489, 15082124, 19206638
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 19418928
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2004 GMC Sierra 1500 Submodels:
- Base, 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

2004 GMC Sierra 1500 Catalytic Converter

With a comprehensive array of OEM 2004 GMC Sierra 1500 Catalytic Converter, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2004 GMC Sierra 1500 Catalytic Converter are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

2004 GMC Sierra 1500 Catalytic Converter Parts Questions & Experts Answers

Q: How to replace the catalytic converter on 4.3L, 4.8L, and 5.3L engines on 2004 GMC Sierra 1500?
A: In order to replace the Catalytic Converter on 4.3l, 4.8l, and 5.3l engines, raise and support the vehicle first. If equipped, unclip the Oxygen Sensor connection from the floor reinforcement and then separate the Oxygen Sensor electrical connector and detach the Oxygen Sensor clips from the frame. Pull off the connector position assurance (CPA) retainers and the Oxygen Sensor electric connectors. Clip the oxygen sensors electrical connectors from the hose clip as well as transmission crossmember and disconnect the cpa retainers and the Oxygen Sensor electrical connectors (1, 2). Give way the left as well as right exhaust manifold pipe nuts, along with exhaust muffler nuts then remove the Catalytic Converter. If necessary, deinstall the oxygen sensors. That is if required, for installation install the oxygen sensors and use anti-seize compound gm p/n 12377953, or equivalent to the threads of the old oxygen sensors, tighten to 42 nm (31 ft. Lbs.). Next install the Catalytic Converter and new exhaust manifold pipe seal to the exhaust manifolds. Place the right and left exhaust manifold pipe nuts snugly into place and then tighten down to 50 nm (39 ft. Lbs). Put the exhaust muffler nuts and tighten them up to 40 nm (30 ft. Lbs.). Connect the Oxygen Sensor electrical connectors (1, 2) and the cpa retainers, ticking the clips of oxygen sensors electrical connector to the hose clip and transmission cross member. Connect the Oxygen Sensor electrical connecters and cpa retainers, attaching the clip around the engine harness and Oxygen Sensor pigtail and connecting the Oxygen Sensor electrical connecter. If available, attach the Oxygen Sensor connection to the floor reinforcement prior to lowering the vehicle.