Next Idea. Mostly all rear AC units have 1 to 2 rear blend doors. (1) Will blend AC Evaporator cold air and heater core hot air. In the winter this dehumidifies the air so your windows do not fog up. (2) will control air flow direction. Ceiling, side and floor vents. The plastic gear in the...
Retired AC Tech: The rear AC units on nearly all GM units do not use an orifice on the rear evaporator. They have an Expansion Valve located in the evaporator case.
Type into youtube 1993 Chevy suburban rear AC expansion valve location.
Just bought (50) for $6.00 on EBay for my K1500. Worked great.
https://www.ebay.com/itm/363064632903?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=OnMfAEzZTr2&sssrc=4429486&ssuid=Ufw5Uk7zTKK&var=&widget_ver=artemis&media=COPY
If the original 350 has some problems, just wait till that fresh cammed, headed, long tubed and injected 350 gets a hold of that tired 4L60E Grenade. Fire extinguisher comes to mind.
Visit Harbor Freight. They have a Bluetooth OBD2 plug in but it only works with Android. Look it up online. $65.00 and it reads live date like CamRetard and others. Not sure about NN but the App is a free download with free lifetime updates.
It fixed my P1345 code out of the box.
Good photo but the crack is not visible. If you can see it, take 1/8” drill bit and dimple the end of the crack. That will slow further progress. Teflon tape the sensor. Use adapters for your 1/4” drive ratchet to socket to tighten. (For nearly all sensors.)
Don’t use the 30” break over again...
1997 Chevy K1500 5.7L Cam Retard
Harbor Freight sells a Zurich OBD2 Bluetooth Scanner. $65 and it reads CaM Retard /CMP and many others. It is a nice tool. Easy setup with an Android device.
It includes the App download and lifetime updates. No subscriptions required. Out of the many choices I...