How to replace the catalytic converter on a Pickup 4.3L on GMC Sonoma?

Begin replacing the Catalytic Converter on a pickup 4.3l by putting on protective goggles and gloves first. Mount the vehicle at the proper height before beginning work. The transmission support should be removed according to necessity. First disconnect the electrical connections that lead to the lh, rh and post-converter heated Oxygen Sensor (H02S). Start by removing nuts from the Muffler to Catalytic Converter flange then remove the Muffler from the assembly. Start by unbolidng the flange nuts from the Exhaust Manifold and proceed to separate the Catalytic Converter from its rubber hanger and any present gaskets. You must remove heated oxygen sensors (H02S) only if needed. Install the heated Oxygen Sensor (H02S) as needed followed by the Catalytic Converter and new gaskets then complete the installation sequence. Position the Catalytic Converter onto the rubber hanger then use flange nuts to connect it to the Exhaust Manifold by torquing them to 53 nm (39 ft. Lbs.). Affix the Muffler to the Catalytic Converter along with a new gasket while tightening the flange nuts to a torque of 40 nm (30 ft. Lbs.). Connect the heated Oxygen Sensor (H02S) electrical wires with both rh and lh post-converter and rh and lh heated Oxygen Sensor components. Install the transmission support before lowering the vehicle to its original position.

OEM GMC Sonoma Catalytic Converter

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27 Catalytic Converters found

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GMC Sonoma Catalytic Converter
Part Number: 25316547
Product Specifications
- Other Name: Converter, Catalytic Converter; Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-2000 GMC Sonoma | SL, SLE, SLS | 4 Cyl 2.2 L FLEX, 4 Cyl 2.2 L GAS
View related parts
GMC Sonoma Catalytic Converter
Part Number: 25175249
Product Specifications
- Other Name: Converter, Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-1999 GMC Sonoma | SL, SLE, SLS | 6 Cyl 4.3 L GAS
View related parts
GMC Sonoma Catalytic Converter
Part Number: 25160211
Product Specifications
- Other Name: Converter, Catalytic Converter; Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995 GMC Sonoma | SL, SLE, SLS | 6 Cyl 4.3 L GAS
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GMC Sonoma Catalytic Converter
Part Number: 25130022
Product Specifications
- Other Name: Converter, Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1994 GMC Sonoma | Base, GT, SL, SLE, SLS | 6 Cyl 4.3 L GAS
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GMC Sonoma Catalytic Converter
Part Number: 25104269
Product Specifications
- Other Name: Converter, Catalytic Converter
- Replaced by: 25146092
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1991 GMC Sonoma | Base, SLE | 6 Cyl 4.3 L GAS
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GMC Sonoma Converter & Pipe
Part Number: 15156890
Product Specifications
- Other Name: Pipe Assembly-Exhaust Manifold *Marked Print; Catalytic Converter; Exhaust Pipe; Pipe, Catalytic Converter; Pipe, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2001 GMC Sonoma | SL, SLE, SLS | 6 Cyl 4.3 L GAS
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GMC Sonoma Converter
Part Number: 25177514
Product Specifications
- Other Name: Catalytic Converter-3Way; Converter, Catalytic Converter; Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-2000 GMC Sonoma | SL, SLE, SLS | 4 Cyl 2.2 L FLEX, 4 Cyl 2.2 L GAS
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GMC Sonoma Front Pipe
Part Number: 15744828
Product Specifications
- Other Name: Pipe Assembly-Exhaust Manifold *Marked Print; Catalytic Converter; Exhaust Pipe; Converter & Pipe; Pipe, Catalytic Converter; Pipe, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2004 GMC Sonoma | SL, SLE, SLS | 4 Cyl 2.2 L FLEX, 4 Cyl 2.2 L GAS, 6 Cyl 4.3 L GAS
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GMC Sonoma Front Pipe
Part Number: 15156892
Product Specifications
- Other Name: Pipe; Catalytic Converter; Exhaust Pipe; Converter & Pipe; Pipe, Catalytic Converter; Pipe, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000 GMC Sonoma | SL, SLE, SLS | 6 Cyl 4.3 L GAS
View related parts
GMC Sonoma Catalytic Converter
Part Number: 88960624
Product Specifications
- Other Name: Converter, Catalytic Converter; Converter
- Replaces: 25104939
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1991-1993 GMC Sonoma | Base, SLE, SLS | 4 Cyl 2.5 L GAS
View related parts
GMC Sonoma Catalytic Converter
Part Number: 25146545
Product Specifications
- Other Name: Converter, Catalytic Converter; Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995 GMC Sonoma | SL, SLE, SLS | 6 Cyl 4.3 L GAS
View related parts
GMC Sonoma Converter
Part Number: 25143990
Product Specifications
- Other Name: Converter, Catalytic Converter; Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994 GMC Sonoma | SL, SLE, SLS | 4 Cyl 2.2 L GAS
View related parts
GMC Sonoma Catalytic Converter
Part Number: 25152639
Product Specifications
- Other Name: Converter, Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1995 GMC Sonoma | SL, SLE, SLS | 4 Cyl 2.2 L GAS
View related parts
GMC Sonoma Catalytic Converter
Part Number: 25152988
Product Specifications
- Other Name: Converter, Catalytic Converter; Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996 GMC Sonoma | SL, SLE, SLS | 4 Cyl 2.2 L GAS
View related parts
GMC Sonoma Catalytic Converter
Part Number: 25104271
Product Specifications
- Other Name: Converter, Catalytic Converter; Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1991-1993 GMC Sonoma | Base, SLE, SLS | 6 Cyl 2.8 L GAS
View related parts
GMC Sonoma Catalytic Converter
Part Number: 25152875
Product Specifications
- Other Name: Converter, Catalytic Converter; Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1997 GMC Sonoma | SL, SLE, SLS | 6 Cyl 4.3 L GAS
View related parts
GMC Sonoma Catalytic Converter
Part Number: 25146092
Product Specifications
- Other Name: Converter, Catalytic Converter; Converter
- Replaces: 25104269
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1991-1994 GMC Sonoma | Base, GT, SL, SLE, SLS | 6 Cyl 4.3 L GAS
View related parts
GMC Sonoma Catalytic Converter
Part Number: 25179076
Product Specifications
- Other Name: Converter, Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-1999 GMC Sonoma | SL, SLE, SLS | 6 Cyl 4.3 L GAS
View related parts
GMC Sonoma Catalytic Converter
Part Number: 25163564
Product Specifications
- Other Name: Catalytic Converter-3Way; Converter; Converter, Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997-1998 GMC Sonoma | SL, SLE, SLS | 4 Cyl 2.2 L GAS
View related parts
GMC Sonoma Converter
Part Number: 25146590
Product Specifications
- Other Name: Converter, Catalytic Converter; Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995 GMC Sonoma | SL, SLE, SLS | 6 Cyl 4.3 L GAS

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GMC Sonoma Catalytic Converter

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GMC Sonoma Catalytic Converter Parts Questions & Experts Answers

Front Pipe
15744828
Q: How to replace the catalytic converter on a Pickup 4.3L on GMC Sonoma?
A: Begin replacing the Catalytic Converter on a pickup 4.3l by putting on protective goggles and gloves first. Mount the vehicle at the proper height before beginning work. The transmission support should be removed according to necessity. First disconnect the electrical connections that lead to the lh, rh and post-converter heated Oxygen Sensor (H02S). Start by removing nuts from the Muffler to Catalytic Converter flange then remove the Muffler from the assembly. Start by unbolidng the flange nuts from the Exhaust Manifold and proceed to separate the Catalytic Converter from its rubber hanger and any present gaskets. You must remove heated oxygen sensors (H02S) only if needed. Install the heated Oxygen Sensor (H02S) as needed followed by the Catalytic Converter and new gaskets then complete the installation sequence. Position the Catalytic Converter onto the rubber hanger then use flange nuts to connect it to the Exhaust Manifold by torquing them to 53 nm (39 ft. Lbs.). Affix the Muffler to the Catalytic Converter along with a new gasket while tightening the flange nuts to a torque of 40 nm (30 ft. Lbs.). Connect the heated Oxygen Sensor (H02S) electrical wires with both rh and lh post-converter and rh and lh heated Oxygen Sensor components. Install the transmission support before lowering the vehicle to its original position.

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