1996 - 2002 GM Truck R134a AC High Pressure Ball Valve Service Port Leak Repair & Test (Chevy & GMC)

In this video we will go over the replacement of a leaking AC high side service port valve, as well as a leaking low side Schrader port valve, in GM trucks. The low side valves can be replaced without evacuating the R134a refrigerant charge. But the high side replacement, being of a ball valve design, requires a complete R134a refrigerant recovery prior to performing the repair. After the repair several vacuum pump operations will be required to check for other leaks, as well as to validate that the replacement parts are not defective and then ultimately to pull a deep one hour vacuum to prepare the system for R134a refrigerant recharging. The vehicle illustrated is a GMT400 era old body style (OBS) truck, a 1999 Chevrolet Suburban. But the approach, parts, and technique are applicable to all GM OBS trucks in the years specified in the title.

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1996 1997 1998 1999 2000 2001 2002

Chapters
0:00 - Problem overview
2:50 - Replacement part numbers
3:52 - R134a refrigerant recovery
4:52 - Low side Schrader valve core replacement
7:51 - High side service port assembly replacement
10:23 - Vacuum leak tests & final tips

#drshock #chevytrucks #carac #autoac

Disclaimer: DrShock, the alias for the human content creator for this YouTube channel, is not responsible for any damages, injuries, losses, or liabilities associated with any repairs, upgrades, or maintenance performed on yours, or any other, vehicle whatsoever. No warranty, express or implied, is made as to the accuracy or completeness of any information provided within this channel. Viewing and using the “as-is" information of this channel is totally at your own risk. Always wear personal protection equipment and follow appropriate vehicle manufacturer service manual guidelines with original manufacturer parts only when performing any repairs, upgrades, or maintenance upon any vehicle.

Видео 1996 - 2002 GM Truck R134a AC High Pressure Ball Valve Service Port Leak Repair & Test (Chevy & GMC) канала DrShock