# 2007 gmc sierra 1500 classic extended cab 4.3 v6 **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** sierra1500, gmc\ **Created:** [August 19, 2018, 9:06pm UTC](https://community.cartalk.com/t/2007-gmc-sierra-1500-classic-extended-cab-4-3-v6/123256 "2018-08-19T21:06:13Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Betty\_anthony\_Washington](https://avatars.discourse-cdn.com/v4/letter/b/ba8739/32.png) [@Betty\_anthony\_Washington](https://community.cartalk.com/u/Betty_anthony_Washington)\ **Post date:** [August 19, 2018, 9:06pm UTC](https://community.cartalk.com/t/2007-gmc-sierra-1500-classic-extended-cab-4-3-v6/123256/1 "2018-08-19T21:06:13Z")
I’ve done a tune up, spark plugs wires cap anyway theres still a misfire on the number 5 cylinder the stats are as follows; P0305,P0102,P0128,P0200 can anybody give me some direction thank u in advance. ---
**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\ **Post date:** [August 20, 2018, 2:27am UTC](https://community.cartalk.com/t/2007-gmc-sierra-1500-classic-extended-cab-4-3-v6/123256/2 "2018-08-20T02:27:56Z")
perform a compression test and report the numbers perform a fuel injector balance test . . . this particular fuel injection system sometimes gets sticky injectors But don’t throw more money at it, until you’ve done some more testing ---
**Author:** ![Betty\_anthony\_Washington](https://avatars.discourse-cdn.com/v4/letter/b/ba8739/32.png) [@Betty\_anthony\_Washington](https://community.cartalk.com/u/Betty_anthony_Washington)\ **Post date:** [August 20, 2018, 4:41am UTC](https://community.cartalk.com/t/2007-gmc-sierra-1500-classic-extended-cab-4-3-v6/123256/3 "2018-08-20T04:41:34Z")
Thank you for the information i will check compression