Alberta Born wrote:
I have a 2006 Chev Avalanche (don't judge me, normally I'm a Ford guy), it is the 5.3 V8 1500 and I am almost certain the gear ratio is the 4.10.
A 5.3L Avalanche with a 4.10 axle ratio would indeed be rare so you'd certainly want to verify that by examining the RPO codes shown on the glove box sticker.
GU6 -- AXLE REAR, 3.42 RATIO
GT4 -- AXLE REAR, 3.73 RATIO
GT5 -- AXLE REAR, 4.10 RATIO
By far the most common ratio used in this vintage of Silverado / Sierra / Avalanche is 3.42, just what I had in my 2006 Silverado and now have in my current 2005 Avalanche ... not great for towing, good for a maximum loaded trailer weight of ~ 6000 lbs. That
Jayco 29D has a UVW of 5580 lbs so I'd expect you'd be towing
at least 6500 lbs loaded and ready to camp, with an average gross tongue weight of ~ 850 lbs which is an awful lot an Avalanche. JMO, but I wouldn't tow a trailer 31' long and weighing this much with an Av.