SKP SK521979K2 Suspension Control Arm - Rear Left Upper, Rear Right Upper or Rear Upper

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SKP SK521979K2 Suspension Control Arm - Rear Left Upper, Rear Right Upper or Rear Upper

Brand	SKP SK521979K2
Position	Rear Left Upper, Rear Right Upper, and Rear Upper
Fits	Buick, Chevrolet, GMC, and Oldsmobile · 80 vehicles

OE-style replacement. Direct-fit suspension control arm for accurate geometry and alignment.

Steel construction. Built from high-strength steel with a corrosion-resistant coating.

Fitment-specific design. Matches listed GM applications for a precise suspension replacement.

Cross-references Delphi TC5974, 521979 and MS501012 for the same application. See all 3.

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Suspension Control Arm Overview

The SKP Suspension Control Arm, part number SK521979K2, is a direct-fit suspension replacement for select GM applications. It helps restore proper wheel alignment, steering precision, and ride quality when original control arms are worn.

Key Features

High-strength steel construction for structural support.
Corrosion-resistant coating for added protection.
Engineered for accurate fitment and suspension geometry.
Helps reduce uneven tire wear caused by worn components.
Part number SK521979K2 for easy identification.

Detailed Description

This SKP suspension control arm is built for rear upper applications on Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Chevrolet SSR, and Oldsmobile Bravada models listed below. It is a practical replacement when the original arm has looseness, corrosion, or bushing-related wear that affects alignment and steering response. The SK521979K2 is made from high-strength steel and finished with a corrosion-resistant coating to handle everyday road exposure.

This part cross-references Delphi TC5974 for the same application. SK521979K2 is also referenced by interchange numbers 521979 and MS501012.

What It Is Used For

Correcting alignment issues caused by worn suspension arms.
Reducing steering imprecision and suspension looseness.
Addressing uneven tire wear linked to worn rear suspension components.
Replacing a damaged or corroded control arm.

Installation Notes and Tips

Fits 2002-2009 Chevrolet Trailblazer, rear left upper and rear right upper, with no auto air level control; fits 2002-2006 Chevrolet Trailblazer, rear left upper and rear right upper, with auto air level control. Fits 2002-2009 GMC Envoy, rear left upper and rear right upper, without auto air level control. Fits 2004-2007 Buick Rainier, rear left upper and rear right upper, without auto air level control. Fits 2003-2006 Chevrolet SSR, rear upper, without RPO code G67 auto air level control. Fits 2002-2004 Oldsmobile Bravada, rear left upper and rear right upper, without auto air level control.

Verify the suspension configuration and notes before installation to confirm the correct application for your vehicle.

Quality Assurance

SKP builds this control arm from high-strength steel and applies a corrosion-resistant finish for durability in demanding road conditions.

This part fits 80 vehicles

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

Year	Make	Model	Submodel	Liters	Cylinders	Position	Notes
2009	Chevrolet	Trailblazer	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2009	Chevrolet	Trailblazer	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2009	GMC	Envoy	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2009	GMC	Envoy	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2008	Chevrolet	Trailblazer	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2008	Chevrolet	Trailblazer	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2008	GMC	Envoy	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2008	GMC	Envoy	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2007	Buick	Rainier	—	—	—	Rear Left Upper	w/o Auto Air Level Control
2007	Buick	Rainier	—	—	—	Rear Right Upper	w/o Auto Air Level Control
2007	Chevrolet	Trailblazer	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2007	Chevrolet	Trailblazer	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2007	GMC	Envoy	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2007	GMC	Envoy	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2006	Buick	Rainier	—	—	—	Rear Left Upper	w/o Auto Air Level Control
2006	Buick	Rainier	—	—	—	Rear Right Upper	w/o Auto Air Level Control
2006	Chevrolet	SSR	—	—	—	Rear Upper	w/o RPO Code G67 (Auto Air Level Control)
2006	Chevrolet	Trailblazer	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2006	Chevrolet	Trailblazer	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2006	Chevrolet	Trailblazer	Base	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2006	Chevrolet	Trailblazer	Base	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2006	Chevrolet	Trailblazer	B	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2006	Chevrolet	Trailblazer	A	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2006	Chevrolet	Trailblazer	B	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2006	Chevrolet	Trailblazer	A	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2006	GMC	Envoy	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2006	GMC	Envoy	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2005	Buick	Rainier	—	—	—	Rear Left Upper	w/o Auto Air Level Control
2005	Buick	Rainier	—	—	—	Rear Right Upper	w/o Auto Air Level Control
2005	Chevrolet	SSR	—	—	—	Rear Upper	w/o RPO Code G67 (Auto Air Level Control)
2005	Chevrolet	Trailblazer	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2005	Chevrolet	Trailblazer	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2005	Chevrolet	Trailblazer	Base	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2005	Chevrolet	Trailblazer	Base	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2005	Chevrolet	Trailblazer	B	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2005	Chevrolet	Trailblazer	A	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2005	Chevrolet	Trailblazer	B	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2005	Chevrolet	Trailblazer	A	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2005	Chevrolet	Trailblazer	R	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2005	Chevrolet	Trailblazer	Q	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2005	Chevrolet	Trailblazer	R	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2005	Chevrolet	Trailblazer	Q	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2005	GMC	Envoy	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2005	GMC	Envoy	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2004	Buick	Rainier	—	—	—	Rear Left Upper	w/o Auto Air Level Control
2004	Buick	Rainier	—	—	—	Rear Right Upper	w/o Auto Air Level Control
2004	Chevrolet	SSR	—	—	—	Rear Upper	w/o RPO Code G67 (Auto Air Level Control)
2004	Chevrolet	Trailblazer	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2004	Chevrolet	Trailblazer	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2004	Chevrolet	Trailblazer	Base	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2004	Chevrolet	Trailblazer	Base	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2004	Chevrolet	Trailblazer	B	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2004	Chevrolet	Trailblazer	A	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2004	Chevrolet	Trailblazer	B	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2004	Chevrolet	Trailblazer	A	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2004	GMC	Envoy	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2004	GMC	Envoy	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2004	Oldsmobile	Bravada	—	—	—	Rear Left Upper	w/o Auto Air Level Control
2004	Oldsmobile	Bravada	—	—	—	Rear Right Upper	w/o Auto Air Level Control
2003	Chevrolet	SSR	—	—	—	Rear Upper	w/o RPO Code G67 (Auto Air Level Control)
2003	Chevrolet	Trailblazer	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2003	Chevrolet	Trailblazer	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2003	Chevrolet	Trailblazer	Base	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2003	Chevrolet	Trailblazer	Base	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2003	GMC	Envoy	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2003	GMC	Envoy	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2003	Oldsmobile	Bravada	—	—	—	Rear Left Upper	w/o Auto Air Level Control
2003	Oldsmobile	Bravada	—	—	—	Rear Right Upper	w/o Auto Air Level Control
2002	Chevrolet	Trailblazer	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2002	Chevrolet	Trailblazer	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2002	Chevrolet	Trailblazer	LT	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2002	Chevrolet	Trailblazer	LTZ	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2002	Chevrolet	Trailblazer	LS	4.2L	L6	Rear Left Upper	w/Auto Air Level Control
2002	Chevrolet	Trailblazer	LT	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2002	Chevrolet	Trailblazer	LTZ	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2002	Chevrolet	Trailblazer	LS	4.2L	L6	Rear Right Upper	w/Auto Air Level Control
2002	GMC	Envoy	—	4.2L	L6	Rear Left Upper	w/o Auto Air Level Control
2002	GMC	Envoy	—	4.2L	L6	Rear Right Upper	w/o Auto Air Level Control
2002	Oldsmobile	Bravada	—	—	—	Rear Left Upper	w/o Auto Air Level Control
2002	Oldsmobile	Bravada	—	—	—	Rear Right Upper	w/o Auto Air Level Control
No rows match your filter.

Directly replaces or cross-references 3 part numbers

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

Delphi — TC5974521979MS501012