SOURCE: My 2004 avalanche does not go in reverse. All
check your transmission fluid first.when full of fluid it should shift right.any problems,get stuck maybe? just all of sudden no reverse?will give you two solutions that may help.1st check your fluid,if low top it off with lucas transmission treatment which will free up any stuck valves it the transmission. you can find the lucas at autozone or advance auto for abot $11.00 a bottle but well worth the investment.if not low on fluid,disconnect the positive cable from battery for 10minutes this will reset the entire computer system.if this does'nt help suggest you change transmission fluid and filter and still add the lucas treatment to it.and if none of these solutions help,sorry it will need to go to the shop.thank you for choosing fixya.com and wish you the very best of luck!
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