Dorman 70055 Tail Light Circuit Board - Left

Brand Dorman 70055
Position Left
Bulbs Included No
Connector Shape Oval
Connector/Terminal Type Female
Control Functions Tail Light
Installation Hardware Included No
Package Contents Tail Light Circuit Board
Fits Cadillac, Chevrolet, and GMC · 236 vehicles

Direct replacement. Seamlessly replaces the failure-prone stock circuit board.

Tail light function. Restores reliable lighting operation when the board fails.

Oval female connector. Matches the original connection style for a straightforward install.

Cross-references 1P1634, 181-12A and 16511565 for the same application. See all 3.

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Tail Light Circuit Board Replacement

Dorman 70055 is a left tail light circuit board replacement for select Chevrolet, GMC, Cadillac, and GMC SUV applications. It restores tail light function when the original board has burned out or failed, making it a direct repair for common rear lighting electrical issues.

Built for vehicles that use an oval female connector, this tail light circuit board is a practical OE-style solution for restoring the tail lamp circuit on applications such as Chevrolet C1500, GMC K1500, and Chevrolet Tahoe. The Dorman 70055 part number is also a useful reference when searching for a replacement tail light circuit board for older GM trucks and SUVs.

Key Features

  • Tail light circuit board for exterior lighting repair
  • Replaces a failed or heat-damaged original board
  • Oval connector shape with female terminal design
  • Controls tail light function
  • Bulbs are not included
  • Package contents: tail light circuit board

Detailed Description

This Dorman tail light circuit board is engineered as a replacement for the failure-prone board used on select GM rear lamp assemblies. It addresses electrical faults at the circuit board level rather than replacing the entire tail lamp housing, which can help restore proper tail light operation on 1988-2000 Chevrolet C1500, 1988-2000 GMC K2500, and 1995-2000 Chevrolet Tahoe applications. The Dorman 70055 is also referenced for 1999-2000 Cadillac Escalade left-side tail light repair.

This part cross-references OE-style numbers such as 1P1634 and 16511565 for the same application.

What It Can Fix

  • Tail light not working due to a burnt circuit board
  • Intermittent rear lighting caused by board failure
  • Loss of tail lamp electrical contact at the connector
  • Corrosion- or heat-related circuit board damage
  • Failed left-side tail light circuit on select GM trucks and SUVs

Installation Notes and Tips

Fits 1988-1999 Chevrolet C1500, left; 1992-1999 Chevrolet C1500 Suburban, left; 1995-2000 Chevrolet Tahoe, left; 1992-2000 GMC Yukon, left; and other listed GM applications. Verify connector shape, terminal style, and left-side placement before installation. Transfer any required bulbs from the existing assembly, since bulbs are not included. Confirm the tail lamp housing and connector are clean and free of heat damage before installing the replacement board.

Quality Assurance

Dorman supplies replacement electrical components for vehicle-specific repairs, and this circuit board is built to restore tail light function on the listed applications with the correct connector and control layout.

This part fits 236 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2000CadillacEscaladeLeftIncludes One Side Only; Package Quantity: 1
2000ChevroletC2500LeftIncludes One Side Only; Package Quantity: 1
2000ChevroletC3500LeftIncludes One Side Only; Package Quantity: 1
2000ChevroletK2500LeftIncludes One Side Only; Package Quantity: 1
2000ChevroletK3500LeftIncludes One Side Only; Package Quantity: 1
2000ChevroletTahoeLeftIncludes One Side Only; Package Quantity: 1
2000GMCC2500LeftIncludes One Side Only; Package Quantity: 1
2000GMCC3500LeftIncludes One Side Only; Package Quantity: 1
2000GMCK2500LeftIncludes One Side Only; Package Quantity: 1
2000GMCK3500LeftIncludes One Side Only; Package Quantity: 1
2000GMCYukonLeftIncludes One Side Only; Package Quantity: 1
1999CadillacEscaladeLeftIncludes One Side Only; Package Quantity: 1
1999ChevroletC1500LeftIncludes One Side Only; Package Quantity: 1
1999ChevroletC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1999ChevroletC2500LeftIncludes One Side Only; Package Quantity: 1
1999ChevroletC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1999ChevroletC3500LeftIncludes One Side Only; Package Quantity: 1
1999ChevroletK1500LeftIncludes One Side Only; Package Quantity: 1
1999ChevroletK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1999ChevroletK2500LeftIncludes One Side Only; Package Quantity: 1
1999ChevroletK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1999ChevroletK3500LeftIncludes One Side Only; Package Quantity: 1
1999ChevroletTahoeLeftIncludes One Side Only; Package Quantity: 1
1999GMCC1500LeftIncludes One Side Only; Package Quantity: 1
1999GMCC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1999GMCC2500LeftIncludes One Side Only; Package Quantity: 1
1999GMCC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1999GMCC3500LeftIncludes One Side Only; Package Quantity: 1
1999GMCK1500LeftIncludes One Side Only; Package Quantity: 1
1999GMCK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1999GMCK2500LeftIncludes One Side Only; Package Quantity: 1
1999GMCK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1999GMCK3500LeftIncludes One Side Only; Package Quantity: 1
1999GMCYukonLeftIncludes One Side Only; Package Quantity: 1
1998ChevroletC1500LeftIncludes One Side Only; Package Quantity: 1
1998ChevroletC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1998ChevroletC2500LeftIncludes One Side Only; Package Quantity: 1
1998ChevroletC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1998ChevroletC3500LeftIncludes One Side Only; Package Quantity: 1
1998ChevroletK1500LeftIncludes One Side Only; Package Quantity: 1
1998ChevroletK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1998ChevroletK2500LeftIncludes One Side Only; Package Quantity: 1
1998ChevroletK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1998ChevroletK3500LeftIncludes One Side Only; Package Quantity: 1
1998ChevroletTahoeLeftIncludes One Side Only; Package Quantity: 1
1998GMCC1500LeftIncludes One Side Only; Package Quantity: 1
1998GMCC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1998GMCC2500LeftIncludes One Side Only; Package Quantity: 1
1998GMCC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1998GMCC3500LeftIncludes One Side Only; Package Quantity: 1
1998GMCK1500LeftIncludes One Side Only; Package Quantity: 1
1998GMCK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1998GMCK2500LeftIncludes One Side Only; Package Quantity: 1
1998GMCK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1998GMCK3500LeftIncludes One Side Only; Package Quantity: 1
1998GMCYukonLeftIncludes One Side Only; Package Quantity: 1
1997ChevroletC1500LeftIncludes One Side Only; Package Quantity: 1
1997ChevroletC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1997ChevroletC2500LeftIncludes One Side Only; Package Quantity: 1
1997ChevroletC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1997ChevroletC3500LeftIncludes One Side Only; Package Quantity: 1
1997ChevroletK1500LeftIncludes One Side Only; Package Quantity: 1
1997ChevroletK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1997ChevroletK2500LeftIncludes One Side Only; Package Quantity: 1
1997ChevroletK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1997ChevroletK3500LeftIncludes One Side Only; Package Quantity: 1
1997ChevroletTahoeLeftIncludes One Side Only; Package Quantity: 1
1997GMCC1500LeftIncludes One Side Only; Package Quantity: 1
1997GMCC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1997GMCC2500LeftIncludes One Side Only; Package Quantity: 1
1997GMCC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1997GMCC3500LeftIncludes One Side Only; Package Quantity: 1
1997GMCK1500LeftIncludes One Side Only; Package Quantity: 1
1997GMCK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1997GMCK2500LeftIncludes One Side Only; Package Quantity: 1
1997GMCK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1997GMCK3500LeftIncludes One Side Only; Package Quantity: 1
1997GMCYukonLeftIncludes One Side Only; Package Quantity: 1
1996ChevroletC1500LeftIncludes One Side Only; Package Quantity: 1
1996ChevroletC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1996ChevroletC2500LeftIncludes One Side Only; Package Quantity: 1
1996ChevroletC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1996ChevroletC3500LeftIncludes One Side Only; Package Quantity: 1
1996ChevroletK1500LeftIncludes One Side Only; Package Quantity: 1
1996ChevroletK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1996ChevroletK2500LeftIncludes One Side Only; Package Quantity: 1
1996ChevroletK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1996ChevroletK3500LeftIncludes One Side Only; Package Quantity: 1
1996ChevroletTahoeLeftIncludes One Side Only; Package Quantity: 1
1996GMCC1500LeftIncludes One Side Only; Package Quantity: 1
1996GMCC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1996GMCC2500LeftIncludes One Side Only; Package Quantity: 1
1996GMCC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1996GMCC3500LeftIncludes One Side Only; Package Quantity: 1
1996GMCK1500LeftIncludes One Side Only; Package Quantity: 1
1996GMCK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1996GMCK2500LeftIncludes One Side Only; Package Quantity: 1
1996GMCK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1996GMCK3500LeftIncludes One Side Only; Package Quantity: 1
1996GMCYukonLeftIncludes One Side Only; Package Quantity: 1
1995ChevroletC1500LeftIncludes One Side Only; Package Quantity: 1
1995ChevroletC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1995ChevroletC2500LeftIncludes One Side Only; Package Quantity: 1
1995ChevroletC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1995ChevroletC3500LeftIncludes One Side Only; Package Quantity: 1
1995ChevroletK1500LeftIncludes One Side Only; Package Quantity: 1
1995ChevroletK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1995ChevroletK2500LeftIncludes One Side Only; Package Quantity: 1
1995ChevroletK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1995ChevroletK3500LeftIncludes One Side Only; Package Quantity: 1
1995ChevroletTahoeLeftIncludes One Side Only; Package Quantity: 1
1995GMCC1500LeftIncludes One Side Only; Package Quantity: 1
1995GMCC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1995GMCC2500LeftIncludes One Side Only; Package Quantity: 1
1995GMCC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1995GMCC3500LeftIncludes One Side Only; Package Quantity: 1
1995GMCK1500LeftIncludes One Side Only; Package Quantity: 1
1995GMCK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1995GMCK2500LeftIncludes One Side Only; Package Quantity: 1
1995GMCK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1995GMCK3500LeftIncludes One Side Only; Package Quantity: 1
1995GMCYukonLeftIncludes One Side Only; Package Quantity: 1
1994ChevroletBlazerLeftIncludes One Side Only; Package Quantity: 1
1994ChevroletC1500LeftIncludes One Side Only; Package Quantity: 1
1994ChevroletC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1994ChevroletC2500LeftIncludes One Side Only; Package Quantity: 1
1994ChevroletC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1994ChevroletC3500LeftIncludes One Side Only; Package Quantity: 1
1994ChevroletK1500LeftIncludes One Side Only; Package Quantity: 1
1994ChevroletK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1994ChevroletK2500LeftIncludes One Side Only; Package Quantity: 1
1994ChevroletK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1994ChevroletK3500LeftIncludes One Side Only; Package Quantity: 1
1994GMCC1500LeftIncludes One Side Only; Package Quantity: 1
1994GMCC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1994GMCC2500LeftIncludes One Side Only; Package Quantity: 1
1994GMCC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1994GMCC3500LeftIncludes One Side Only; Package Quantity: 1
1994GMCK1500LeftIncludes One Side Only; Package Quantity: 1
1994GMCK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1994GMCK2500LeftIncludes One Side Only; Package Quantity: 1
1994GMCK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1994GMCK3500LeftIncludes One Side Only; Package Quantity: 1
1994GMCYukonLeftIncludes One Side Only; Package Quantity: 1
1993ChevroletBlazerLeftIncludes One Side Only; Package Quantity: 1
1993ChevroletC1500LeftIncludes One Side Only; Package Quantity: 1
1993ChevroletC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1993ChevroletC2500LeftIncludes One Side Only; Package Quantity: 1
1993ChevroletC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1993ChevroletC3500LeftIncludes One Side Only; Package Quantity: 1
1993ChevroletK1500LeftIncludes One Side Only; Package Quantity: 1
1993ChevroletK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1993ChevroletK2500LeftIncludes One Side Only; Package Quantity: 1
1993ChevroletK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1993ChevroletK3500LeftIncludes One Side Only; Package Quantity: 1
1993GMCC1500LeftIncludes One Side Only; Package Quantity: 1
1993GMCC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1993GMCC2500LeftIncludes One Side Only; Package Quantity: 1
1993GMCC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1993GMCC3500LeftIncludes One Side Only; Package Quantity: 1
1993GMCK1500LeftIncludes One Side Only; Package Quantity: 1
1993GMCK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1993GMCK2500LeftIncludes One Side Only; Package Quantity: 1
1993GMCK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1993GMCK3500LeftIncludes One Side Only; Package Quantity: 1
1993GMCYukonLeftIncludes One Side Only; Package Quantity: 1
1992ChevroletBlazerLeftIncludes One Side Only; Package Quantity: 1
1992ChevroletC1500LeftIncludes One Side Only; Package Quantity: 1
1992ChevroletC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1992ChevroletC2500LeftIncludes One Side Only; Package Quantity: 1
1992ChevroletC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1992ChevroletC3500LeftIncludes One Side Only; Package Quantity: 1
1992ChevroletK1500LeftIncludes One Side Only; Package Quantity: 1
1992ChevroletK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1992ChevroletK2500LeftIncludes One Side Only; Package Quantity: 1
1992ChevroletK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1992ChevroletK3500LeftIncludes One Side Only; Package Quantity: 1
1992GMCC1500LeftIncludes One Side Only; Package Quantity: 1
1992GMCC1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1992GMCC2500LeftIncludes One Side Only; Package Quantity: 1
1992GMCC2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1992GMCC3500LeftIncludes One Side Only; Package Quantity: 1
1992GMCK1500LeftIncludes One Side Only; Package Quantity: 1
1992GMCK1500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1992GMCK2500LeftIncludes One Side Only; Package Quantity: 1
1992GMCK2500 SuburbanLeftIncludes One Side Only; Package Quantity: 1
1992GMCK3500LeftIncludes One Side Only; Package Quantity: 1
1992GMCYukonLeftIncludes One Side Only; Package Quantity: 1
1991ChevroletC1500LeftIncludes One Side Only; Package Quantity: 1
1991ChevroletC2500LeftIncludes One Side Only; Package Quantity: 1
1991ChevroletC3500LeftIncludes One Side Only; Package Quantity: 1
1991ChevroletK1500LeftIncludes One Side Only; Package Quantity: 1
1991ChevroletK2500LeftIncludes One Side Only; Package Quantity: 1
1991ChevroletK3500LeftIncludes One Side Only; Package Quantity: 1
1991GMCC1500LeftIncludes One Side Only; Package Quantity: 1
1991GMCC2500LeftIncludes One Side Only; Package Quantity: 1
1991GMCC3500LeftIncludes One Side Only; Package Quantity: 1
1991GMCK1500LeftIncludes One Side Only; Package Quantity: 1
1991GMCK2500LeftIncludes One Side Only; Package Quantity: 1
1991GMCK3500LeftIncludes One Side Only; Package Quantity: 1
1990ChevroletC1500LeftIncludes One Side Only; Package Quantity: 1
1990ChevroletC2500LeftIncludes One Side Only; Package Quantity: 1
1990ChevroletC3500LeftIncludes One Side Only; Package Quantity: 1
1990ChevroletK1500LeftIncludes One Side Only; Package Quantity: 1
1990ChevroletK2500LeftIncludes One Side Only; Package Quantity: 1
1990ChevroletK3500LeftIncludes One Side Only; Package Quantity: 1
1990GMCC1500LeftIncludes One Side Only; Package Quantity: 1
1990GMCC2500LeftIncludes One Side Only; Package Quantity: 1
1990GMCC3500LeftIncludes One Side Only; Package Quantity: 1
1990GMCK1500LeftIncludes One Side Only; Package Quantity: 1
1990GMCK2500LeftIncludes One Side Only; Package Quantity: 1
1990GMCK3500LeftIncludes One Side Only; Package Quantity: 1
1989ChevroletC1500LeftIncludes One Side Only; Package Quantity: 1
1989ChevroletC2500LeftIncludes One Side Only; Package Quantity: 1
1989ChevroletC3500LeftIncludes One Side Only; Package Quantity: 1
1989ChevroletK1500LeftIncludes One Side Only; Package Quantity: 1
1989ChevroletK2500LeftIncludes One Side Only; Package Quantity: 1
1989ChevroletK3500LeftIncludes One Side Only; Package Quantity: 1
1989GMCC1500LeftIncludes One Side Only; Package Quantity: 1
1989GMCC2500LeftIncludes One Side Only; Package Quantity: 1
1989GMCC3500LeftIncludes One Side Only; Package Quantity: 1
1989GMCK1500LeftIncludes One Side Only; Package Quantity: 1
1989GMCK2500LeftIncludes One Side Only; Package Quantity: 1
1989GMCK3500LeftIncludes One Side Only; Package Quantity: 1
1988ChevroletC1500LeftIncludes One Side Only; Package Quantity: 1
1988ChevroletC2500LeftIncludes One Side Only; Package Quantity: 1
1988ChevroletC3500LeftIncludes One Side Only; Package Quantity: 1
1988ChevroletK1500LeftIncludes One Side Only; Package Quantity: 1
1988ChevroletK2500LeftIncludes One Side Only; Package Quantity: 1
1988ChevroletK3500LeftIncludes One Side Only; Package Quantity: 1
1988GMCC1500LeftIncludes One Side Only; Package Quantity: 1
1988GMCC2500LeftIncludes One Side Only; Package Quantity: 1
1988GMCC3500LeftIncludes One Side Only; Package Quantity: 1
1988GMCK1500LeftIncludes One Side Only; Package Quantity: 1
1988GMCK2500LeftIncludes One Side Only; Package Quantity: 1
1988GMCK3500LeftIncludes One Side Only; Package Quantity: 1
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
1P1634181-12A16511565