About TRQ: TRQ is a trusted brand dedicated to making every repair a success story by combining premium parts with easy installation. Each TRQ part is engineered by a team of automotive experts to meet or exceed OEM standards, delivering enhanced performance and maximum longevity. With rigorous in-house testing, the brand ensures superior fit and function across every product line. TRQ also provides customers with best-in-class, step-by-step installation videos—so you can complete repairs with confidence, whether you're a first-time DIYer or an industry professional.
This new transfer case switch is a high quality, value priced, aftermarket replacement part.
If defective, your shift light will not indicate 4WD when shifted to 4WD. Why search through junk yards hoping to find a used 4x4 vacuum switch when you can have it brand new! Replace that defective transfer case switch now.
Specifications
Vacuum operated
Replaces dealer part number: 15664811
Direct bolt on
Fits 4 wheel drive trucks
Built to strict quality control standards
Note: If you have any questions about this fitting your application, please call your local GM dealer with the above part number.
This 4x4 GM vacuum switch has substantial cost savings over a dealer unit.
Returns: Parts with electrical components cannot be returned once installed.
Attention California Customers:
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, 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.
This part fits
11 vehicles spanning 1983-2005.
Fits these Makes
Select vehicle
Year
Make
Model
Description
1995-2005
Chevrolet
Blazer
Chevrolet Blazer with 3 Pin Connector Transfer Case Vacuum Switch TRQ SWA41712
1983-1994
Chevrolet
Blazer S10
Chevrolet Blazer S10 with 3 Pin Connector Transfer Case Vacuum Switch TRQ SWA41712
1983-2004
Chevrolet
S10 Pickup
Chevrolet S10 Pickup with 3 Pin Connector Transfer Case Vacuum Switch TRQ SWA41712
1992-2001
GMC
Jimmy
GMC Jimmy with 3 Pin Connector Transfer Case Vacuum Switch TRQ SWA41712
1983-1991
GMC
Jimmy S-15
GMC Jimmy S-15 with 3 Pin Connector Transfer Case Vacuum Switch TRQ SWA41712
1983-1990
GMC
S-15 Pickup
GMC S-15 Pickup with 3 Pin Connector Transfer Case Vacuum Switch TRQ SWA41712
1991-2004
GMC
S-15 Sonoma
GMC S-15 Sonoma with 3 Pin Connector Transfer Case Vacuum Switch TRQ SWA41712
1991
GMC
Syclone
GMC Syclone with 3 Pin Connector Transfer Case Vacuum Switch TRQ SWA41712
1992-1993
GMC
Typhoon
GMC Typhoon with 3 Pin Connector Transfer Case Vacuum Switch TRQ SWA41712
1991-1994
Oldsmobile
Bravada
Olds Bravada with 3 Pin Connector Transfer Case Vacuum Switch TRQ SWA41712
1996-2001
Oldsmobile
Bravada
Olds Bravada with 3 Pin Connector Transfer Case Vacuum Switch TRQ SWA41712
Part Interchange
Brand Label
Part Number
Wells
1S3164
Standard Motor Products
TCA2
Wells
SW3467
Chevrolet
14071720
Dorman - OE Solutions
600-500
Standard Ignition
TCA-2
General Motors
15664811
General Motors
89059420
Dorman - HELP
49315
This item may be interchangeable with parts from other brands with the above part numbers.
This information is provided only for reference and does not guarantee that the item you are
purchasing is identical to parts with part numbers from the brands listed above.
To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.
Lifetime Warranty
This item is backed by our limited lifetime warranty. In the event that this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.
Returns: Parts with electrical components cannot be returned once installed.
FREE Shipping is standard on Orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii, Alaska and US Territories. Shipping is not available to Canada.
Expedited is available on checkout to the United States, excluding Alaska, Hawaii and US Territories as well as P.O. Boxes and APO/FPO/DPO addresses. Final shipping costs are available at checkout.
SWA41712
In Stock
Product Reviews
5.0/ 5
★★★★★★★★★★
2 reviews
5★
100%
4★
0%
3★
0%
2★
0%
1★
0%
★★★★★March 21, 2025
Vacuum switch woos !
a well needed item from time to time in the winter months to keep 4 wheel drive in working condition . They normally last for 4 to 6 years and then need to be replaced .
★★★★★June 3, 2021
Just the right part and price.
I bought a 98 Jimmy and one of the recommendations I saw was to change this part periodically to prevent fluid from getting up into the vacuum system and mess up your heat/ac door controls. This is just what I needed and give me peace of mind that it has been changed.
Showing 1–2 of 2 reviews
Customer Q&A
Got a question about this part? Post it and get answers from our team.
corbinAugust 3, 2019
Do you have the cap that goes on top which the vaccum lines attach too? Also the lines themselves, sizes etc. I'm not getting any vaccum to the front actuator and getting oil in the vaccum lines after I replaced this switch.
Currently, we do not carry this part for your vehicle. We're always updating our inventory so please check back soon! If you have any other questions, let us know.
Jessica · August 3, 2019
Showing 1–1 of 1 question
Customer service
877-844-3393
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Select Your Vehicle
Specify your vehicle's year, make and model to guarantee fit.