20 Most Recent 2008 Chevrolet Avalanche - Page 10 Questions & Answers

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.

bleed the cooling system you have air trapped in there.

bleed the cooling system you have an air bubble in there.

pinion bearing

do what ever you like

Sound like to me it is TPS Switch( Throttle Possitioner Switch). Or Fuel Pump Relay? Either will cause this to happen due to signals picked up by ECM and PCM. Hope this helps you out?

HI. NOW IT NEED TO BE TURN OFF YOU CAN DO THIS BUT YOU WILL NEED A CODE READER OR TAKE TO A CAR SHOP THAY CAN DO IT FOR YOU

Hello, what year and model of chevy do you have?

Front, back, or all?

Have the code read it may be a wheel sensor, wheel bearing, and/or brake issue.

You may have cooked the fuel pump. Or the gauge may be off.I would check fuel pressure with a gauge and make sure you have gas in the tank. Anything less than a quarter of a tank is rough on the pump. It needs liquid gasoline to keep cool and lubed.

how do you know that number 8 is misfire. By a code P0308 or else.