Standard Ignition NS-85 Neutral Safety Switch

Brand Standard Ignition NS-85
Connector Gender Female
Terminal Gender Male
Terminal Type Blade
Fits Oldsmobile, Cadillac, Chevrolet, GMC, Hummer, and Isuzu · 332 vehicles

100% tested. Verifies mechanical and electrical switching performance.

Robust design. Built with high-grade materials for demanding service work.

Blade terminals. Female connectors with 11 male terminals.

Cross-references Anchor 8824, 1S5070 and 2-8824 for the same application. See all 14.

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Free returns within 60 days if it doesn't fit when fitment is verified.

Neutral Safety Switch for GM Applications

The Standard Ignition NS-85 neutral safety switch is built for vehicles that need accurate park/neutral start interlock and dependable electrical switching. It is a direct-fit service part for a wide range of Chevrolet, GMC, Cadillac, Oldsmobile, Hummer, and Isuzu applications, including Silverado, Sierra, Tahoe, Yukon, and Astro models.

Standard Ignition NS-85 is engineered with tested mechanical and electrical switching performance to help restore proper transmission range signal operation. The female connector, 11 male blade terminals, and 2-connector layout support a clean replacement on the listed applications.

Key Features

  • Neutral safety switch for automatic transmission start interlock systems
  • Female connector gender with 2 connectors
  • 11 male blade terminals for secure electrical connection
  • Built and tested for mechanical and electrical switching performance
  • Service replacement for many Chevrolet Silverado, GMC Sierra, and Cadillac Escalade applications
  • Standard Ignition NS-85 part number for catalog and cross-reference lookup

Detailed Description

The NS-85 neutral safety switch helps control starter engagement only when the transmission is in Park or Neutral, while also supporting correct range-signal operation on the listed vehicles. It is a practical replacement for GM trucks, SUVs, vans, and performance models such as the Chevrolet Corvette, Chevrolet Blazer, GMC Yukon, and Cadillac Escalade. This part cross-references Anchor 8824 for the same application.

Compatible With 1994-2004 Chevrolet S10, 1995-2003 Chevrolet Tahoe, 1999-2003 GMC Sierra 1500, and many other GM platforms listed in the fitment data. The Standard Ignition NS-85 is also referenced by part number NS85 in interchange listings.

What It Helps Fix

  • No-crank condition when the transmission is in Park or Neutral
  • Starter engagement in the wrong gear position
  • Intermittent or inaccurate park/neutral switch signal
  • Transmission range signal faults tied to switch wear
  • Electrical connection issues at the neutral safety switch circuit

Installation Notes and Tips

Verify connector style, terminal count, and vehicle application before installation. Confirm the transmission is in the correct position during diagnosis, and inspect the harness terminals for corrosion, spread terminals, or damaged locking tabs. After installation, check starter operation in Park and Neutral and confirm the vehicle starts only in the proper range positions.

Quality Assurance

Standard Ignition states that this part is 100% tested for mechanical and electrical switching performance. Its robust construction and high-grade materials are intended to meet the demands of professional service use on GM and related applications.

This part fits 332 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionLitersCylindersPositionNotes
2004OldsmobileBravada—4.2LL6N/A—
2003CadillacEscaladeAutomatic——N/A—
2003CadillacEscalade ESVAutomatic——N/A—
2003CadillacEscalade EXTAutomatic——N/A—
2003ChevroletAstroAutomatic——N/A—
2003ChevroletAvalanche 1500Automatic——N/A—
2003ChevroletAvalanche 2500Automatic——N/A—
2003ChevroletBlazerAutomatic——N/A—
2003ChevroletCorvetteAutomatic——N/A—
2003ChevroletExpress 1500Automatic——N/A—
2003ChevroletExpress 2500Automatic——N/A—
2003ChevroletExpress 3500Automatic——N/A—
2003ChevroletS10Automatic——N/A—
2003ChevroletSilverado 1500Automatic——N/A—
2003ChevroletSilverado 1500 HDAutomatic——N/A—
2003ChevroletSilverado 2500Automatic——N/A—
2003ChevroletSilverado 2500 HDAutomatic——N/A—
2003ChevroletSilverado 3500Automatic——N/A—
2003ChevroletSuburban 1500Automatic——N/A—
2003ChevroletSuburban 2500Automatic——N/A—
2003ChevroletTahoeAutomatic——N/A—
2003ChevroletTrailblazerAutomatic——N/A—
2003ChevroletTrailblazer EXTAutomatic——N/A—
2003GMCEnvoyAutomatic——N/A—
2003GMCEnvoy XLAutomatic——N/A—
2003GMCSafariAutomatic——N/A—
2003GMCSavana 1500Automatic——N/A—
2003GMCSavana 2500Automatic——N/A—
2003GMCSavana 3500Automatic——N/A—
2003GMCSierra 1500Automatic——N/A—
2003GMCSierra 1500 HDAutomatic——N/A—
2003GMCSierra 2500Automatic——N/A—
2003GMCSierra 2500 HDAutomatic——N/A—
2003GMCSierra 3500Automatic——N/A—
2003GMCSonomaAutomatic——N/A—
2003GMCYukonAutomatic——N/A—
2003GMCYukon XL 1500Automatic——N/A—
2003GMCYukon XL 2500Automatic——N/A—
2003HummerH1Automatic——N/A—
2003HummerH2Automatic——N/A—
2003OldsmobileBravada—4.2LL6N/A—
2002CadillacEscaladeAutomatic——N/A—
2002CadillacEscalade EXT———N/A—
2002ChevroletAstroAutomatic——N/A—
2002ChevroletAvalanche 1500Automatic——N/A—
2002ChevroletAvalanche 2500Automatic——N/A—
2002ChevroletBlazerAutomatic——N/A—
2002ChevroletCorvetteAutomatic——N/A—
2002ChevroletExpress 1500Automatic——N/A—
2002ChevroletExpress 2500Automatic——N/A—
2002ChevroletExpress 3500Automatic——N/A—
2002ChevroletS10Automatic——N/A—
2002ChevroletSilverado 1500Automatic——N/A—
2002ChevroletSilverado 1500 HDAutomatic——N/A—
2002ChevroletSilverado 2500Automatic——N/A—
2002ChevroletSilverado 2500 HDAutomatic——N/A—
2002ChevroletSilverado 3500Automatic——N/A—
2002ChevroletSuburban 1500Automatic——N/A—
2002ChevroletSuburban 2500———N/A—
2002ChevroletTahoe———N/A—
2002ChevroletTrailblazerAutomatic——N/A—
2002ChevroletTrailblazer EXTAutomatic——N/A—
2002GMCEnvoyAutomatic——N/A—
2002GMCEnvoy XLAutomatic——N/A—
2002GMCJimmy—4.3LV6N/A—
2002GMCSafariAutomatic——N/A—
2002GMCSavana 1500Automatic——N/A—
2002GMCSavana 2500Automatic——N/A—
2002GMCSavana 3500Automatic——N/A—
2002GMCSierra 1500Automatic——N/A—
2002GMCSierra 1500 HDAutomatic——N/A—
2002GMCSierra 2500Automatic——N/A—
2002GMCSierra 2500 HDAutomatic——N/A—
2002GMCSierra 3500Automatic——N/A—
2002GMCSonomaAutomatic——N/A—
2002GMCYukon———N/A—
2002GMCYukon XL 1500Automatic——N/A—
2002GMCYukon XL 2500Automatic——N/A—
2002OldsmobileBravada—4.2LL6N/A—
2001ChevroletAstroAutomatic——N/A—
2001ChevroletBlazerAutomatic——N/A—
2001ChevroletCorvetteAutomatic——N/A—
2001ChevroletExpress 1500Automatic——N/A—
2001ChevroletExpress 2500Automatic——N/A—
2001ChevroletExpress 3500Automatic——N/A—
2001ChevroletS10Automatic——N/A—
2001ChevroletSilverado 1500Automatic——N/A—
2001ChevroletSilverado 1500 HDAutomatic——N/A—
2001ChevroletSilverado 2500Automatic——N/A—
2001ChevroletSilverado 2500 HDAutomatic——N/A—
2001ChevroletSilverado 3500Automatic——N/A—
2001ChevroletSuburban 1500Automatic——N/A—
2001ChevroletSuburban 2500———N/A—
2001ChevroletTahoe———N/A—
2001GMCJimmyAutomatic——N/A—
2001GMCSafariAutomatic——N/A—
2001GMCSavana 1500Automatic——N/A—
2001GMCSavana 2500Automatic——N/A—
2001GMCSavana 3500Automatic——N/A—
2001GMCSierra 1500Automatic——N/A—
2001GMCSierra 1500 HDAutomatic——N/A—
2001GMCSierra 2500Automatic——N/A—
2001GMCSierra 2500 HDAutomatic——N/A—
2001GMCSierra 3500Automatic——N/A—
2001GMCSonomaAutomatic——N/A—
2001GMCYukon———N/A—
2001GMCYukon XL 1500Automatic——N/A—
2001GMCYukon XL 2500Automatic——N/A—
2001OldsmobileBravada—4.3LV6N/A—
2000CadillacEscalade—5.7LV8N/A—
2000ChevroletAstroAutomatic——N/A—
2000ChevroletBlazerAutomatic——N/A—
2000ChevroletC2500———N/A—
2000ChevroletC3500———N/A—
2000ChevroletCorvetteAutomatic——N/A—
2000ChevroletExpress 1500Automatic——N/A—
2000ChevroletExpress 2500Automatic——N/A—
2000ChevroletExpress 3500Automatic——N/A—
2000ChevroletK2500———N/A—
2000ChevroletK3500———N/A—
2000ChevroletS10Automatic——N/A—
2000ChevroletSilverado 1500———N/A—
2000ChevroletSilverado 2500———N/A—
2000ChevroletSuburban 1500Automatic——N/A—
2000ChevroletSuburban 2500Automatic——N/A—
2000ChevroletTahoe———N/A—
2000GMCC2500Automatic——N/A—
2000GMCC3500Automatic——N/A—
2000GMCJimmyAutomatic——N/A—
2000GMCK2500Automatic——N/A—
2000GMCK3500Automatic——N/A—
2000GMCSafariAutomatic——N/A—
2000GMCSavana 1500Automatic——N/A—
2000GMCSavana 2500Automatic——N/A—
2000GMCSavana 3500Automatic——N/A—
2000GMCSierra 1500Automatic——N/A—
2000GMCSierra 2500Automatic——N/A—
2000GMCSonomaAutomatic——N/A—
2000GMCYukonAutomatic——N/A—
2000GMCYukon XL 1500Automatic——N/A—
2000GMCYukon XL 2500Automatic——N/A—
2000IsuzuHombreAutomatic——N/A—
2000OldsmobileBravada—4.3LV6N/A—
1999CadillacEscalade—5.7LV8N/A—
1999ChevroletAstroAutomatic——N/A—
1999ChevroletBlazerAutomatic——N/A—
1999ChevroletC1500———N/A—
1999ChevroletC1500 SuburbanAutomatic——N/A—
1999ChevroletC2500———N/A—
1999ChevroletC2500 SuburbanAutomatic——N/A—
1999ChevroletC3500———N/A—
1999ChevroletCorvetteAutomatic——N/A—
1999ChevroletExpress 1500Automatic——N/A—
1999ChevroletExpress 2500Automatic——N/A—
1999ChevroletExpress 3500Automatic——N/A—
1999ChevroletK1500———N/A—
1999ChevroletK1500 SuburbanAutomatic——N/A—
1999ChevroletK2500———N/A—
1999ChevroletK2500 SuburbanAutomatic——N/A—
1999ChevroletK3500———N/A—
1999ChevroletP30———N/A—
1999ChevroletS10Automatic——N/A—
1999ChevroletSilverado 1500———N/A—
1999ChevroletSilverado 2500———N/A—
1999ChevroletSuburban 1500—5.7LV8N/A—
1999ChevroletTahoe———N/A—
1999GMCC1500Automatic——N/A—
1999GMCC1500 SuburbanAutomatic——N/A—
1999GMCC2500Automatic——N/A—
1999GMCC2500 SuburbanAutomatic——N/A—
1999GMCC3500Automatic——N/A—
1999GMCJimmyAutomatic——N/A—
1999GMCK1500———N/A—
1999GMCK1500 SuburbanAutomatic——N/A—
1999GMCK2500Automatic——N/A—
1999GMCK2500 SuburbanAutomatic——N/A—
1999GMCK3500Automatic——N/A—
1999GMCP3500———N/A—
1999GMCSafariAutomatic——N/A—
1999GMCSavana 1500Automatic——N/A—
1999GMCSavana 2500Automatic——N/A—
1999GMCSavana 3500Automatic——N/A—
1999GMCSierra 1500Automatic——N/A—
1999GMCSierra 2500Automatic——N/A—
1999GMCSonomaAutomatic——N/A—
1999GMCYukonAutomatic——N/A—
1999IsuzuHombreAutomatic2.2LL4N/A—
1999IsuzuHombre—4.3LV6N/A—
1999OldsmobileBravada—4.3LV6N/A—
1998ChevroletAstroAutomatic——N/A—
1998ChevroletBlazerAutomatic——N/A—
1998ChevroletC1500———N/A—
1998ChevroletC1500 SuburbanAutomatic——N/A—
1998ChevroletC2500———N/A—
1998ChevroletC2500 SuburbanAutomatic——N/A—
1998ChevroletC3500———N/A—
1998ChevroletCorvetteAutomatic——N/A—
1998ChevroletExpress 1500Automatic——N/A—
1998ChevroletExpress 2500Automatic——N/A—
1998ChevroletExpress 3500Automatic——N/A—
1998ChevroletK1500———N/A—
1998ChevroletK1500 SuburbanAutomatic——N/A—
1998ChevroletK2500———N/A—
1998ChevroletK2500 SuburbanAutomatic——N/A—
1998ChevroletK3500———N/A—
1998ChevroletP30———N/A—
1998ChevroletS10Automatic——N/A—
1998ChevroletSuburban 1500—5.7LV8N/A—
1998ChevroletTahoe———N/A—
1998GMCC1500Automatic——N/A—
1998GMCC1500 SuburbanAutomatic——N/A—
1998GMCC2500Automatic——N/A—
1998GMCC2500 SuburbanAutomatic——N/A—
1998GMCC3500Automatic——N/A—
1998GMCJimmyAutomatic——N/A—
1998GMCK1500Automatic——N/A—
1998GMCK1500 SuburbanAutomatic——N/A—
1998GMCK2500Automatic——N/A—
1998GMCK2500 SuburbanAutomatic——N/A—
1998GMCK3500Automatic——N/A—
1998GMCP3500———N/A—
1998GMCSafariAutomatic——N/A—
1998GMCSavana 1500Automatic——N/A—
1998GMCSavana 2500Automatic——N/A—
1998GMCSavana 3500Automatic——N/A—
1998GMCSonomaAutomatic——N/A—
1998GMCYukon———N/A—
1998IsuzuHombreAutomatic2.2LL4N/A—
1998IsuzuHombre—4.3LV6N/A—
1998OldsmobileBravada—4.3LV6N/A—
1997ChevroletAstroAutomatic——N/A—
1997ChevroletBlazerAutomatic——N/A—
1997ChevroletC1500———N/A—
1997ChevroletC1500 SuburbanAutomatic——N/A—
1997ChevroletC2500———N/A—
1997ChevroletC2500 SuburbanAutomatic——N/A—
1997ChevroletC3500———N/A—
1997ChevroletCorvetteAutomatic——N/A—
1997ChevroletExpress 1500Automatic——N/A—
1997ChevroletExpress 2500Automatic——N/A—
1997ChevroletExpress 3500Automatic——N/A—
1997ChevroletK1500———N/A—
1997ChevroletK1500 SuburbanAutomatic——N/A—
1997ChevroletK2500———N/A—
1997ChevroletK2500 SuburbanAutomatic——N/A—
1997ChevroletK3500———N/A—
1997ChevroletP30———N/A—
1997ChevroletS10Automatic——N/A—
1997ChevroletSuburban 1500—5.7LV8N/A—
1997ChevroletTahoe———N/A—
1997GMCC1500Automatic——N/A—
1997GMCC1500 SuburbanAutomatic——N/A—
1997GMCC2500Automatic——N/A—
1997GMCC2500 SuburbanAutomatic——N/A—
1997GMCC3500Automatic——N/A—
1997GMCJimmyAutomatic——N/A—
1997GMCK1500Automatic——N/A—
1997GMCK1500 SuburbanAutomatic——N/A—
1997GMCK2500Automatic——N/A—
1997GMCK2500 SuburbanAutomatic——N/A—
1997GMCK3500Automatic——N/A—
1997GMCP3500———N/A—
1997GMCSafariAutomatic——N/A—
1997GMCSavana 1500Automatic——N/A—
1997GMCSavana 2500Automatic——N/A—
1997GMCSavana 3500Automatic——N/A—
1997GMCSonomaAutomatic——N/A—
1997GMCYukon———N/A—
1997IsuzuHombreAutomatic2.2LL4N/A—
1997IsuzuHombre—4.3LV6N/A—
1997OldsmobileBravadaAutomatic——N/A—
1996ChevroletAstroAutomatic——N/A—
1996ChevroletBlazerAutomatic——N/A—
1996ChevroletC1500———N/A—
1996ChevroletC1500 SuburbanAutomatic——N/A—
1996ChevroletC2500———N/A—
1996ChevroletC2500 SuburbanAutomatic——N/A—
1996ChevroletC3500———N/A—
1996ChevroletK1500———N/A—
1996ChevroletK1500 SuburbanAutomatic——N/A—
1996ChevroletK2500———N/A—
1996ChevroletK2500 SuburbanAutomatic——N/A—
1996ChevroletK3500———N/A—
1996ChevroletP30———N/A—
1996ChevroletS10Automatic——N/A—
1996ChevroletSuburban 1500—5.7LV8N/A—
1996ChevroletTahoeAutomatic——N/A—
1996GMCC1500Automatic——N/A—
1996GMCC1500 SuburbanAutomatic——N/A—
1996GMCC2500Automatic——N/A—
1996GMCC2500 SuburbanAutomatic——N/A—
1996GMCC3500Automatic——N/A—
1996GMCJimmyAutomatic——N/A—
1996GMCK1500Automatic——N/A—
1996GMCK1500 SuburbanAutomatic——N/A—
1996GMCK2500Automatic——N/A—
1996GMCK2500 SuburbanAutomatic——N/A—
1996GMCK3500Automatic——N/A—
1996GMCP3500———N/A—
1996GMCSafariAutomatic——N/A—
1996GMCSonomaAutomatic——N/A—
1996GMCYukonAutomatic——N/A—
1996IsuzuHombre—2.2LL4N/A—
1996OldsmobileBravadaAutomatic——N/A—
1995ChevroletBlazerAutomatic——N/A—
1995ChevroletC1500———N/A—
1995ChevroletC1500 SuburbanAutomatic——N/A—
1995ChevroletC2500———N/A—
1995ChevroletC2500 SuburbanAutomatic——N/A—
1995ChevroletC3500———N/A—
1995ChevroletK1500———N/A—
1995ChevroletK1500 SuburbanAutomatic——N/A—
1995ChevroletK2500———N/A—
1995ChevroletK2500 SuburbanAutomatic——N/A—
1995ChevroletK3500———N/A—
1995ChevroletS10Automatic——N/A—
1995ChevroletSuburban 1500—5.7LV8N/A—
1995ChevroletTahoeAutomatic——N/A—
1995GMCC1500Automatic——N/A—
1995GMCC1500 SuburbanAutomatic——N/A—
1995GMCC2500Automatic——N/A—
1995GMCC2500 SuburbanAutomatic——N/A—
1995GMCC3500Automatic——N/A—
1995GMCJimmyAutomatic——N/A—
1995GMCK1500Automatic——N/A—
1995GMCK1500 SuburbanAutomatic——N/A—
1995GMCK2500Automatic——N/A—
1995GMCK2500 SuburbanAutomatic——N/A—
1995GMCK3500Automatic——N/A—
1995GMCSonomaAutomatic——N/A—
1995GMCYukonAutomatic——N/A—
1994ChevroletS10Automatic——N/A—
Directly replaces or cross-references 14 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 88241S50702-88246M453-3153551290124500168124500160DR4033NS49NS85TNS6502NS6502SBS9171