Pioneer Cables 621043 Automatic Transmission Mount

Name: Pioneer Cables 621043 Automatic Transmission Mount
Brand: Pioneer Cables
SKU: FRMH-621043
Price: 27.64 USD
Availability: InStock

170 vehicles fit this part

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OE Direct Replacement — Bolt-on fit, no modifications needed

Fitment: Chevrolet, GMC, Isuzu, and Oldsmobile, Astro, Avalanche 2500, Blazer, Bravada, Hombre, Jimmy, K1500, S10, Safari, Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 HD, Silverado 2500 HD, Silverado 3500, Sonoma, Suburban 2500, and Yukon XL 2500

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Not what you need? See all Automatic Transmission Mount options

Automatic Transmission Mount for HD Trucks and SUVs

Pioneer Cables 621043 is an automatic transmission mount built for direct replacement on a wide range of Chevrolet, GMC, Oldsmobile, and Isuzu applications. It is engineered for vehicles such as the Chevrolet Silverado 2500 HD, GMC Sierra 2500 HD, and Chevrolet Astro, with fitment spanning 1994-2010 model years.

Key Features

Automatic transmission mount for transmission-to-crossmember support
Sure-Fit System application testing for vehicle-specific installation accuracy
High-grade metal housing with corrosion-resistant coating or pure aluminum construction, depending on application
Blended rubber compound matched to the specific vehicle application for vibration absorption
Seamless hydraulic fill and electronic control where specified by the application
Cross-reference: Anchor 2839

Detailed Description

This Pioneer Cables transmission mount, part number 621043, is a premium replacement for worn or damaged automatic transmission mounts on trucks, vans, and SUVs. It is designed for direct replacement use on models including Chevrolet Silverado 2500 HD, GMC Sierra 3500, Chevrolet Blazer, GMC Jimmy, and Chevrolet S10, with application-specific notes for certain vehicles that mount on the transmission crossmember and connect to the transmission mount bracket. The mount uses a durable housing and a bonded rubber isolator to help control drivetrain movement and reduce vibration transfer.

Compatible With: 2006-2010 Chevrolet Silverado 2500 HD; 2001-2010 GMC Sierra 2500 HD; 2007-2010 GMC Sierra 3500 HD; 2007 GMC Sierra 2500 HD Classic; 2006 Chevrolet Avalanche 2500; 2001-2006 Chevrolet Suburban 2500; 2001-2006 GMC Yukon XL 2500; 1996-2005 Chevrolet Astro; 2002-2005 Chevrolet Avalanche 2500; 1995-2005 Chevrolet Blazer; 2001-2005 Chevrolet Silverado 2500 HD; 2001-2005 Chevrolet Silverado 3500; 1995-2005 GMC Jimmy; 1996-2005 GMC Safari; 2002-2005 GMC Sierra 3500; 1994-2004 Chevrolet S10; 1994-2004 GMC Sonoma; 2001-2002 Chevrolet Silverado 2500 HD w/MT1; 1996-2001 Oldsmobile Bravada; 1998-2000 Isuzu Hombre; 1998 Chevrolet K1500; 1998 GMC K1500.

What It Helps Fix

Excess drivetrain vibration felt through the cabin
Clunking or shifting movement from a deteriorated transmission mount
Transmission support issues caused by cracked or separated rubber
Noise transfer from a worn mount housing or isolator
Improper transmission positioning at the crossmember

Installation Notes and Tips

Verify the vehicle’s year, make, model, and any listed notes before installation. Some applications are located on the transmission crossmember and connect to the transmission mount bracket, so confirm the mounting location against the original part. Compare the existing mount to the replacement and inspect the crossmember and bracket for wear or damage before installation.

Quality Assurance

Pioneer Mounts are built using application-specific testing through the Sure-Fit System and are manufactured with durable housing materials and bonded rubber designed for the listed vehicle applications. Part number 621043 is a direct replacement solution for the confirmed fitment range.

This part fits 170 vehicles. Search below:

Year	Make	Model	Submodel	Drive Type	Transmission	Liters	Cylinders	Fuel Type	Position	Notes
2010	Chevrolet	Silverado 2500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2010	GMC	Sierra 2500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2010	GMC	Sierra 3500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2009	Chevrolet	Silverado 2500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2009	GMC	Sierra 2500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2009	GMC	Sierra 3500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2008	Chevrolet	Silverado 2500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2008	GMC	Sierra 2500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2008	GMC	Sierra 3500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2007	Chevrolet	Silverado 2500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2007	GMC	Sierra 2500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2007	GMC	Sierra 2500 HD Classic	WT	RWD		6.6L	V8	DIESEL	N/A
2007	GMC	Sierra 3500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2006	Chevrolet	Avalanche 2500	LT	4WD		8.1L	V8	GAS	N/A
2006	Chevrolet	Silverado 2500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2006	Chevrolet	Suburban 2500	LT	4WD		8.1L	V8	GAS	N/A
2006	GMC	Sierra 2500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2006	GMC	Yukon XL 2500	SLT	RWD		8.1L	V8	GAS	N/A
2005	Chevrolet	Astro		AWD	Automatic	4.3L	V6		N/A
2005	Chevrolet	Avalanche 2500			Automatic	8.1L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2005	Chevrolet	Blazer		4WD	Automatic	4.3L	V6		N/A
2005	Chevrolet	Blazer		4WD	Manual	4.3L	V6		N/A
2005	Chevrolet	Silverado 2500 HD			Automatic	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2005	Chevrolet	Silverado 3500		RWD	Automatic	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2005	Chevrolet	Suburban 2500	LT	4WD		8.1L	V8	GAS	N/A
2005	GMC	Jimmy		4WD	Automatic	4.3L	V6		N/A
2005	GMC	Jimmy		4WD	Manual	4.3L	V6		N/A
2005	GMC	Safari		AWD	Automatic	4.3L	V6		N/A
2005	GMC	Sierra 2500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2005	GMC	Sierra 3500			Automatic	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2005	GMC	Yukon XL 2500	SLT	RWD		8.1L	V8	GAS	N/A
2004	Chevrolet	Astro		AWD	Automatic	4.3L	V6		N/A
2004	Chevrolet	Avalanche 2500			Automatic	8.1L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2004	Chevrolet	Blazer		4WD	Automatic	4.3L	V6		N/A
2004	Chevrolet	Blazer		4WD	Manual	4.3L	V6		N/A
2004	Chevrolet	S10		4WD	Automatic	4.3L	V6		N/A
2004	Chevrolet	Silverado 2500 HD			Automatic	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2004	Chevrolet	Silverado 3500		RWD	Automatic	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2004	Chevrolet	Suburban 2500	LT	4WD		8.1L	V8	GAS	N/A
2004	GMC	Jimmy		4WD	Automatic	4.3L	V6		N/A
2004	GMC	Safari		AWD	Automatic	4.3L	V6		N/A
2004	GMC	Sierra 2500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2004	GMC	Sierra 3500			Automatic	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2004	GMC	Sonoma		4WD	Automatic	4.3L	V6		N/A
2004	GMC	Yukon XL 2500	SLT	RWD		8.1L	V8	GAS	N/A
2003	Chevrolet	Astro		AWD	Automatic	4.3L	V6		N/A
2003	Chevrolet	Avalanche 2500			Automatic	8.1L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2003	Chevrolet	Blazer		4WD	Automatic	4.3L	V6		N/A
2003	Chevrolet	Blazer		4WD	Manual	4.3L	V6		N/A
2003	Chevrolet	S10		4WD	Automatic	4.3L	V6		N/A
2003	Chevrolet	S10		4WD	Manual	4.3L	V6		N/A
2003	Chevrolet	Silverado 2500 HD			Automatic	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2003	Chevrolet	Silverado 3500			Automatic	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2003	Chevrolet	Suburban 2500	LT	4WD		8.1L	V8	GAS	N/A
2003	GMC	Jimmy		4WD	Automatic	4.3L	V6		N/A
2003	GMC	Safari		AWD	Automatic	4.3L	V6		N/A
2003	GMC	Sierra 2500 HD	WT	RWD		6.6L	V8	DIESEL	N/A
2003	GMC	Sierra 3500			Automatic	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2003	GMC	Sonoma		4WD	Automatic	4.3L	V6		N/A
2003	GMC	Sonoma		4WD	Manual	4.3L	V6		N/A
2003	GMC	Yukon XL 2500	SLT	RWD		8.1L	V8	GAS	N/A
2002	Chevrolet	Astro		AWD	Automatic	4.3L	V6		N/A
2002	Chevrolet	Avalanche 2500			Automatic	8.1L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2002	Chevrolet	Blazer		4WD	Automatic	4.3L	V6		N/A
2002	Chevrolet	Blazer		4WD	Manual	4.3L	V6		N/A
2002	Chevrolet	S10		4WD	Automatic	4.3L	V6		N/A
2002	Chevrolet	S10		4WD	Manual	4.3L	V6		N/A
2002	Chevrolet	Silverado 2500 HD		RWD	Automatic	6.6L	V8		N/A	w/MT1; Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2002	Chevrolet	Silverado 2500 HD		RWD	Manual	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2002	Chevrolet	Silverado 3500		RWD	Automatic	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2002	Chevrolet	Suburban 2500	LT	4WD		8.1L	V8	GAS	N/A
2002	GMC	Jimmy		4WD	Automatic	4.3L	V6		N/A
2002	GMC	Safari		AWD	Automatic	4.3L	V6		N/A
2002	GMC	Sierra 2500 HD	SLT	RWD		6.6L	V8	DIESEL	N/A
2002	GMC	Sierra 3500			Automatic	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2002	GMC	Sonoma		4WD	Automatic	4.3L	V6		N/A
2002	GMC	Sonoma		4WD	Manual	4.3L	V6		N/A
2002	GMC	Yukon XL 2500	SLT	RWD		8.1L	V8	GAS	N/A
2001	Chevrolet	Astro		AWD	Automatic	4.3L	V6		N/A
2001	Chevrolet	Blazer		4WD	Automatic	4.3L	V6		N/A
2001	Chevrolet	Blazer		4WD	Manual	4.3L	V6		N/A
2001	Chevrolet	S10		4WD	Automatic	4.3L	V6		N/A
2001	Chevrolet	S10		4WD	Manual	4.3L	V6		N/A
2001	Chevrolet	Silverado 2500 HD		RWD	Automatic	6.6L	V8		N/A	w/MT1; Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2001	Chevrolet	Silverado 2500 HD		RWD	Manual	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2001	Chevrolet	Silverado 3500		RWD	Automatic	6.6L	V8		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
2001	Chevrolet	Suburban 2500	LT	4WD		8.1L	V8	GAS	N/A
2001	GMC	Jimmy		4WD	Automatic	4.3L	V6		N/A
2001	GMC	Jimmy		4WD	Manual	4.3L	V6		N/A
2001	GMC	Safari		AWD	Automatic	4.3L	V6		N/A
2001	GMC	Sierra 2500 HD	SLT	RWD		6.6L	V8	DIESEL	N/A
2001	GMC	Sonoma		4WD	Automatic	4.3L	V6		N/A
2001	GMC	Sonoma		4WD	Manual	4.3L	V6		N/A
2001	GMC	Yukon XL 2500	SLT	RWD		8.1L	V8	GAS	N/A
2001	Oldsmobile	Bravada			Automatic	4.3L	V6		N/A
2000	Chevrolet	Astro		AWD	Automatic	4.3L	V6		N/A
2000	Chevrolet	Blazer		4WD	Automatic	4.3L	V6		N/A
2000	Chevrolet	Blazer		4WD	Manual	4.3L	V6		N/A
2000	Chevrolet	S10		4WD	Automatic	4.3L	V6		N/A
2000	Chevrolet	S10		4WD	Manual	4.3L	V6		N/A
2000	GMC	Jimmy		4WD	Automatic	4.3L	V6		N/A
2000	GMC	Jimmy		4WD	Manual	4.3L	V6		N/A
2000	GMC	Safari		AWD	Automatic	4.3L	V6		N/A
2000	GMC	Sonoma		4WD	Automatic	4.3L	V6		N/A
2000	GMC	Sonoma		4WD	Manual	4.3L	V6		N/A
2000	Isuzu	Hombre		4WD	Automatic	4.3L	V6		N/A
2000	Isuzu	Hombre		4WD	Manual	4.3L	V6		N/A
2000	Oldsmobile	Bravada			Automatic	4.3L	V6		N/A
1999	Chevrolet	Astro		AWD	Automatic	4.3L	V6		N/A
1999	Chevrolet	Blazer		4WD	Automatic	4.3L	V6		N/A
1999	Chevrolet	Blazer		4WD	Manual	4.3L	V6		N/A
1999	Chevrolet	S10		4WD	Automatic	4.3L	V6		N/A
1999	Chevrolet	S10		4WD	Manual	4.3L	V6		N/A
1999	GMC	Jimmy		4WD	Automatic	4.3L	V6		N/A
1999	GMC	Jimmy		4WD	Manual	4.3L	V6		N/A
1999	GMC	Safari		AWD	Automatic	4.3L	V6		N/A
1999	GMC	Sonoma		4WD	Automatic	4.3L	V6		N/A
1999	GMC	Sonoma		4WD	Manual	4.3L	V6		N/A
1999	Isuzu	Hombre		4WD	Automatic	4.3L	V6		N/A
1999	Isuzu	Hombre		4WD	Manual	4.3L	V6		N/A
1999	Oldsmobile	Bravada			Automatic	4.3L	V6		N/A
1998	Chevrolet	Astro		AWD	Automatic	4.3L	V6		N/A
1998	Chevrolet	Blazer		4WD	Automatic	4.3L	V6		N/A
1998	Chevrolet	Blazer		4WD	Manual	4.3L	V6		N/A
1998	Chevrolet	K1500			Manual	4.3L	V6		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
1998	Chevrolet	S10		4WD	Automatic	4.3L	V6		N/A
1998	Chevrolet	S10		4WD	Manual	4.3L	V6		N/A
1998	GMC	Jimmy		4WD	Automatic	4.3L	V6		N/A
1998	GMC	Jimmy		4WD	Manual	4.3L	V6		N/A
1998	GMC	K1500			Manual	4.3L	V6		N/A	Located On Transmission Crossmember, Connected To Transmission Mount Bracket
1998	GMC	Safari		AWD	Automatic	4.3L	V6		N/A
1998	GMC	Sonoma		4WD	Automatic	4.3L	V6		N/A
1998	GMC	Sonoma		4WD	Manual	4.3L	V6		N/A
1998	Isuzu	Hombre		4WD	Automatic	4.3L	V6		N/A
1998	Isuzu	Hombre		4WD	Manual	4.3L	V6		N/A
1998	Oldsmobile	Bravada			Automatic	4.3L	V6		N/A
1997	Chevrolet	Astro		AWD	Automatic	4.3L	V6		N/A
1997	Chevrolet	Blazer		4WD	Automatic	4.3L	V6		N/A
1997	Chevrolet	Blazer		4WD	Manual	4.3L	V6		N/A
1997	Chevrolet	S10		4WD	Automatic	4.3L	V6		N/A
1997	Chevrolet	S10		4WD	Manual	4.3L	V6		N/A
1997	GMC	Jimmy		4WD	Automatic	4.3L	V6		N/A
1997	GMC	Jimmy		4WD	Manual	4.3L	V6		N/A
1997	GMC	Safari		AWD	Automatic	4.3L	V6		N/A
1997	GMC	Sonoma		4WD	Automatic	4.3L	V6		N/A
1997	GMC	Sonoma		4WD	Manual	4.3L	V6		N/A
1997	Oldsmobile	Bravada			Automatic	4.3L	V6		N/A
1996	Chevrolet	Astro		AWD	Automatic	4.3L	V6		N/A
1996	Chevrolet	Blazer		4WD	Automatic	4.3L	V6		N/A
1996	Chevrolet	Blazer		4WD	Manual	4.3L	V6		N/A
1996	Chevrolet	S10		4WD	Automatic	4.3L	V6		N/A
1996	Chevrolet	S10		4WD	Manual	4.3L	V6		N/A
1996	GMC	Jimmy		4WD	Automatic	4.3L	V6		N/A
1996	GMC	Jimmy		4WD	Manual	4.3L	V6		N/A
1996	GMC	Safari		AWD	Automatic	4.3L	V6		N/A
1996	GMC	Sonoma		4WD	Automatic	4.3L	V6		N/A
1996	GMC	Sonoma		4WD	Manual	4.3L	V6		N/A
1996	Oldsmobile	Bravada			Automatic	4.3L	V6		N/A
1995	Chevrolet	Blazer		4WD	Automatic	4.3L	V6		N/A
1995	Chevrolet	Blazer		4WD	Manual	4.3L	V6		N/A
1995	Chevrolet	S10		4WD	Automatic	4.3L	V6		N/A
1995	Chevrolet	S10		4WD	Manual	4.3L	V6		N/A
1995	GMC	Jimmy		4WD	Automatic	4.3L	V6		N/A
1995	GMC	Jimmy		4WD	Manual	4.3L	V6		N/A
1995	GMC	Sonoma		4WD	Automatic	4.3L	V6		N/A
1995	GMC	Sonoma		4WD	Manual	4.3L	V6		N/A
1994	Chevrolet	S10		4WD	Automatic	4.3L	V6		N/A
1994	Chevrolet	S10		4WD	Manual	4.3L	V6		N/A
1994	GMC	Sonoma		4WD	Automatic	4.3L	V6		N/A
1994	GMC	Sonoma		4WD	Manual	4.3L	V6		N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

2839

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.