What does 4wheels with wrench on left side mean

That means service period is due. Take it to your dealership or registered mechanic for service.

No specs available on bike, and you do not say what type BB, so very hard to advise. Also, your use of the word "cap" is confusing. There is a dust cap on most cranks that has to be removed to access the bolt that holds the crank on the spindle. If that is what you mean it is a regular right-hand thread.

If you actually mean the part of the BB that inserts into the frame (the ring/cup) then that is a left-hand thread, but the left (non-crank) side has to be removed first, and you may need a fairly long wrench to break the seal on the right side.

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This indicates a service is required! Book into your local Chevrolet service centre.

All bicycle pedals have right-hand threads on the right pedal, and left hand threads on the left pedal. Thus, the pedal marked "R" only fits the right hand side of the bike, and the one marked "L" fits on the left side. Damage to the pedals and crank arms will occur if forcibly installed into the incorrect side. For the right hand pedal, the old saying "Righty tighty, Lefty loosey" applies to the direction to turn the pedal spindle when viewed from it's outside end. The OPPOSITE of this applies to the left hand pedal. When both left & right pedals are viewed from a riding position, both pedals loosen when rotated BACKWARDS.

Most pedals (not all) require a 15mm open end wrench to loosen & properly tighten. You can usually get away with using one like this, http://ebay.to/1FbIZsP, but in some cases that won't work because the jaws of this type of wrench might be too thick for some applications. In this case you'll need a bicycle-specific pedal wrench like this: http://ebay.to/1zUVmpN. Pedal wrenches have thinner, hardened jaws and longer handles for more leverage & torque.

Lastly, some pedals found on expensive, high-end bikes require an 8mm hex bit (like this http://ebay.to/17zbZwY, sometimes a 6mm), like an "Allen wrench" inserted in the inner end of the spindle to tighten & loosen in place of a 5mm open end wrench. Otherwise, pedal removal & installation is the same as above.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/john_472b46f833fc3109

check the abs fuse to see if it as blown they system may just be putting more pressure on different parts at differnt times because it is not getting proper control, also if the breaks are new you might consider using a dab of break cement on the back side of the pads and shoes to allow for proper release from the drums/rotors.

it means maintenance is due

You have to have a pedal wrench and they pedals have a right thread right side and a left thread the left side. The right side is the chain side, to tighten either one, you put the bike in front of you and turn the pedal wrench towards you to tighten, to loosen turn the wrench to the rear. This is very important, do it wrong and you strip your crank arms. Pedals are marked R for right side, L for left side. It is important to know this information. Most manuals do not tell you.

make sure to apply 5w-20 oil to caps prior to install. Also caps and journals are number so you do not install in wrong place. Starting with Righ side looking at pulleys from front, right side cam start with first cap on left being #1 then bolt on other side of cap as #2. Cap behind would be #3 to left then #4 bolt next to it. Keep tightening the next 2 caps behind them in same manner, then jump to front of cam to left side and tighten caps front to back. You should tighten to 10 Nm (89 lbs-in) with a torque wrench. Then you tighten left side head cam caps starting with the left side if looking at front pulleys. Start at front caps working to rear then jump to right side cam front to back. Tighten these caps at 8 nm (71 lb-in) using torque wrench. Also make sure if heads are bolted to block that cam pulley postion is the following: left side looking at pulleys------left pulley mark at 12 o'clock right pulley mark at 3 o'clock. Right side head looking at pulleys------- left side pulley at 9 o'clock and right side pulley at 12 o'clock. When I say clock postion that means using head where valve covers meet as your straight vertical postion.

there are screws on the back, use an allen wrench, one quarter turn at a time. To move it right, tighten the left, to move it left, tighten the right.

No, you do not need to use both. In fact, you should never use a spanner wrench to remove your pedals or anything requiring large amounts of torque. For removing your pedals you should be using an pedal wrench or if the pedals are not very tight the allen wrench. A basic pedal wrench like the Park PW-5 is inexpensive and does a great job. Also remember that the non-drive side(left) is reverse threads, meaning both sides come off by unthreading to the rear of the bike.

Hope this helps. Thank you