Expert Answers about GMC Envoy

• Can Higher Load Range Tire Be Used With Lowered Air Pressure For Softer Ride
• You should always inflate the tires for a trailer to the maximum air pressure listed on the sidewall of the tire. Under-inflating a tire will wear the outer edges of the tread. Over-inflating a tire will result in wear the center tread. The Load Range D tire we offer in the size you asked about, ST205/75R14 is part # AM10235. The # AM10235 has a maximum load capacity of 2,040-lbs at 65 psi. Under-inflating this tire to th e50 psi you mentioned may result in a softer ride but tire wear...
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• Are Thule Self-Tensioning, Low-Pro Snow Tire Chains For Temporary Use On 2002 GMC Envoy
• I called my contact about the Thule SelfThule Self-Tensioning, Low-Profile Snow Tire Chains, part # TH00023100. They told me these are not what you said is an on and off chain and the tire chains are designed to be driven at speeds between 30 to 40 mph.
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• Number of Electrical Circuits on Trailer With Electric Brakes
• Typically, a trailer equipped with electric brakes will have either a 6 or a 7-way trailer connector. The 7-way is the most common. If you click the provided link, you can see side by side photos of both connectors. A 4-pole or 4 wire connector like you describe would only provide trailer lighting functions. If your trailer has electric brakes, and you want them operational, you will need to install a brake controller. The Tekonsha Prodigy P2, part # 90885 would be an excellent choice....
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