Standard Ignition Neutral Safety Switch P/N:NS-377
$129.99
(You save)
Keep your truck starting only in Park or Neutral with the Standard Ignition Neutral Safety Switch NS-377 (also written NS377). It installs as a direct-fit replacement for the listed applications: the 2004-2005 Chevrolet Silverado 2500 HD, 2004-2005 Chevrolet Silverado 3500, 2004-2005 GMC Sierra 2500 HD, and 2004-2005 GMC Sierra 3500. A neutral safety switch signals the starting system so the engine cranks only when the transmission is in Park or Neutral, and on many vehicles it also controls the back-up lamp circuit. If a failed switch is the cause of no-crank in Park/Neutral, cranking in gear, or inoperative reverse lights, this replaces it — diagnose the cause before replacing.
100% tested: every unit is checked to verify both mechanical and electrical switching performance.
Robust design: high-grade materials built to meet the demands of today's service professional.
OE ignition expertise: produced by a global manufacturer of original-equipment ignition products with quality control maintained throughout manufacturing.
See the Buyer's Guide tab for the full engine-level fitment list.
Interchange: NS38117 · SW8206 · NS6899 · 29541852
This part cross-references / interchanges with the following part numbers:
NS38117, SW8206, NS6899, 29541852
Frequently Asked Questions
What does this neutral safety switch do?
It signals the starting system so the engine cranks only when the transmission is in Park or Neutral, and on many vehicles it also controls the back-up lamp circuit.
Will the NS-377 fit my vehicle?
It's a direct-fit replacement for the 2004-2005 Chevrolet Silverado 2500 HD/3500 and 2004-2005 GMC Sierra 2500 HD/3500. See the Buyer's Guide tab for full fitment.
What are the signs this switch may need replacing?
Possible signs include no-crank in Park or Neutral, cranking while in gear, or inoperative reverse lights. Diagnose the cause before replacing, as these can have other sources.
Is this switch tested?
Yes. Every unit is 100% tested to verify both mechanical and electrical switching performance.
What numbers does this switch interchange with?
It cross-references NS38117, SW8206, NS6899, and 29541852.
Write a Review
STANDARD MOTOR PRODUCTS
Standard Ignition Neutral Safety Switch P/N:NS-377
Neutral Safety SwitchAs a global manufacturer of original equipment ignition products, we maintain complete quality control throughout the manufacturing process from componentry to finished...
WARNING:
These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov.
