Questions & Answers for: GMC Sierra 2500HD weak coil pack symptoms

...is having trouble turning over I suspect a low battery. What do you suggest? could be batt.is weak or starter is worn and taking more amps to crank,but id put my money on batt.,if youre not

i have a 1996 sierra 2500 4wd problems i have a 1996 sierra 2500 gas truck. when i shift into 4 hi i can hear something clunk like it goes into gear but there is no 4wd and the 4x4 light blinks not ...

Keyless entry won't work on outside of truck but on inside it does Hello: You may have a weak battery. You might try replacing the battery. When replacing the battery be extremely careful not to touch

My oil level is good but my oil pressure gauge is reading zero and it is not moving. What should I look for to fix the problem Check connection (electrical) at oil pressure switch. If connection is ...

p0305 Misfire code. This is on a 2001 gmc sierra 2500HD 8.1 liter V-8. So far I have changed out all the spark plugs and wires. Also put in new cam and crank position sensors as well as the #5 ...

p0305 Misfire code. This is on a 2001 gmc sierra 2500HD 8.1 liter V-8. So far I have changed out all the spark plugs and wires. Also put in new cam and crank position sensors as well as the #5 ...

...it will start normal but more often it will not. could be stopped up air filter, fuel filter, or weak fuel pump...try cycling the ignition on several (3 or 4) times and see if it starts any

...or so. Blows super cold , but starts blowing warm afterwards. Could be several things such as a weak pressure switch or weak clutch magnet. You would need to check for power at the ac clutch when ...

...coil packs, plug wires and spark plugs. fuel pressure with key on 48 psi, engine running 60psi. wondering if problem is a weak fuel pump or crank position sensor creating problem. Could be a bad ...

...coil packs are firing verified with inline light. checked fuel pressure with gauge 48 psi key on,60 psi engine running. oxygen sensors look reasonable on both manifold. oscillating voltage on front ...