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Why is the reverse clutch not working on my 4L60E?

Why is the reverse clutch not working on my 4L60E? If the pan looks good, and the fluid looks clean, than it’s likely not going to be the low reverse clutch causing the problem. Valve Body Issues- A bad valve body can make the reverse gear not work in the 4L60E. If the valve body ends up warped, or if the gasket fails, it’s entirely possible that the gear won’t engage. What happens if there is no reverse in a transmission? In the case of "No Reverse," the players inside the transmission are: Low/Reverse Band (also used for engine braking...
Easy tips

Why does my car keep overheating in the middle of the night?

Why does my car keep overheating in the middle of the night? Possible causes: Engine coolant level may be very low. Engine's drive belts may be broken or slipping. The electric cooling fan may not be coming on. The ignition timing may be set wrong. There may be a vacuum leak. The engine may have mechanical problems. The engine's thermostat may be stuck closed. There may be a leak in the cooling system. Why is my Jeep Cherokee overheating while driving? Engine runs fine but gets very hot while driving. This problem usually occurs after moderate to extended periods of...
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Do I have to drop the oil pan to remove the timing chain?

Do I have to drop the oil pan to remove the timing chain? Depending on the engine and what it's in, I remove the oil pan for an original equipment timing chain replacement. Back in the day, the factory (and not just GM) used nylon on the chain gears and this will come apart over the years. By removing the oil pan, I can clean all the pieces and other just that builds up. Do you need to remove the timing cover? The timing cover holds the front part of the oil pan gasket. ^ Correct. The pan needs to...
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Are there any issues with Optispark in corvette?

Are there any issues with Optispark in corvette? Optispark has caused headaches in the past, but there’s an imbalance of stories when it comes to failed units versus those that have stood the test of time. So what does that mean for someone who’s looking at an LT1 Corvette as a daily driver? Where is the Optispark located on a LT1 engine? What is it? The GM Optispark is an optically-triggered ignition distributor used on the LT1, LT4 and L99 engines. The "opti" has two parts, a low-voltage optical section and a high-voltage cap and rotor section. Where is it?...
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How big is a 5.3 liter Vortec engine?

How big is a 5.3 liter Vortec engine? The two generations did keep the exact volume, 5.328 liters or 325.1 cubic inches, using a bore of 3.78 inches and a stroke of 3.622 inches. For Gen III the LM7 and L59 had cast iron blocks while the LM4 and L33 offered aluminum blocks. How to identify your Vortec engine-my Pro Street? Another convenient way to identify your Vortec engine, a look at the 8th digit of your VIN number will easily identify what you have. T = 5.3L LM7 V= 4.8L LR4 Z = 5.3L L59 U = LQ4 N...
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Where does the fuel go in an EVAP canister?

Where does the fuel go in an EVAP canister? Your EVAP canister can hold a high amount of fuel vapor when your vehicle is in good shape and operating at high efficiency. The fuel vapor goes into your engine to get burnt. This process is termed ‘purging,’ which needs to be assisted by the purge valve. How much charcoal is in an EVAP canister? The canister stores about 2 lb. of activated charcoal used to store and contain fuel vapors until your purge valves open up and allow the engine intake’s vacuum to absorb some fuel vapors from the charcoal...
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What happens if you lose power while driving?

What happens if you lose power while driving? Q: Loss of electrical power while driving but engine still works. I just replaced the alternator yesterday and everything was working fine. When i got to work today all the electrical components in the cab went out but the vehicle was still running at full power and the power steering and headlights were still working. What causes a car to lose electrical power? Check for any loose ground wiring from the cab to the chassis frame and see if they are corroded, damaged, or loose. A bad battery or a loose wire...
Easy lifehacks

What does compression mean on a 5.2L V8?

What does compression mean on a 5.2L V8? This test result tells you that your 5.2L or 5.9L V8 engine has serious internal problems. This is usually due to: Busted timing chain. Engine threw a rod. Any compression value below 100 PSI (even if it's not 0 PSI) means internal mechanical engine trouble. CASE 2: All cylinders have compression but their values are not the same. Can you do a compression test on a GMC 4.8L? Testing the engine compression on your Chevrolet or GMC 4.8L, 5.0L, or 6.0L engine is not hard to do. A compression test will help...
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Does GM still make suburban?

Does GM still make suburban? It now comes with three engine options: a 5.3 liter V8, 6.2 liter V8 or a 3.0 liter Inline-6 turbo diesel. The Suburban was additionally produced under the GMC marque until the GMC version was rebranded as the Yukon XL....Chevrolet Suburban.Chevrolet Suburban/GMC Yukon XLManufacturerGeneral Motors When do Chevrolet Suburbans go on sale in Canada? Offers are valid toward the retail purchase of an eligible new or demonstrator 2019/2020 MY Chevrolet vehicle at a participating Dealer delivered in Canada between April 1, 2020 – April 30, 2020. What kind of warranty does Chevy Suburban have? YOUR...
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What causes a head light to stop working?

What causes a head light to stop working? Most headlight failures are caused by a blown a fuse. Other common problems include bad relay, switch, or module. Wiring problems, especially inside the headlight, can also cause a headlight to stop working. What to do if your headlight is not working? If one or both headlights don't work after you replace the bulbs, check the fuses. The low beams and high beams have their designated fuses for each of the circuits. In some car models, you will have a separate fuse for the left and right low beams. Locate the fuse...