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1992 GMC 1500 Pickup Reviews and Owner Comments

1992 GMC 1500 Pickup owners review and rate their 1992 GMC 1500 Pickup.

1992 GMC 1500 Pickup (1 Review)
Overall
Body, Interior & Misc.
Brakes
Drive Train
Electrical & Lights
Engine
Exhaust & Emissions
Heating & Air Conditioning
Suspension & Steering
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I need to change the A/C unity to 134a refrigerant in 92 GMC pickup truck tell me how would I do this and thank you very much