Lumbar Support System Check. GMC Truck GMC K Pickup

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Pickup - 4WD 🢒 Body and Accessories 🢒 Seats 🢒 Lumbar Support System Check

Step	Action	Normal Result(s)	Abnormal Result(s)*
1	Press the lumbar support switch to inflate the lumbar support.	Lumbar support inflates	Lumbar Support Does Not Inflate
2	Press the lumbar support switch to deflate the lumbar support.	Lumbar support deflates.	Lumbar Support Does Not Deflate
* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.