20 Most Recent 2011 Chevrolet Avalanche - Page 6 Questions & Answers

If it's a diesel, the electric fuel shut off solenoid on the pump is stuck or not working, replace the solenoid. Hope that helps

your timing belt may have jumped two teeth .when did you last do the timing belt

Check owners manual in glove box

it can be a load shedding ,in many cases is the earth wire fault ,if ok check the relay return wire/earth

LIMP IN MODE re-set your pcm if it re-occurs you may have a transmission slippage issue or a faulty shift selonoid in transmission. with stabilty control feature on some models a bad wheel speed sensor or hub bearing can cause the same but usually accompanied with ABS light

All the dealerships have a TSB concerning this very problem. It concerns a possible loose connection at the 175 amp mega fuse located near the passenger side cowl. looks like:

there is a 175 amp mega fuse located on the passenger side of the cowl (upper firewall area) Check this fuse, you will likely find it blown. Should be near arrow 2 in the picture below. It looks like this:

Wheel bearing, CV Joint, bad tire (cupped) could all be the problem.

Either a blend door or servo motor malfunction . Blend door can be blocked in a certain position.Servo motor that controls the blend door can be bad.