1999 Pontiac Grand Prix "gmc 6 liter engine problems" Questions

...6 engines will fit into my 2000 gmc jimmy 4 wheel dr. auto trans the only engine that your truck has available is the 4.3 Liter V6, u can install a 4.8 liter V8 or a 5.3 liter V8, but that would be ...

...gmc 2500 6 liter gas sounds like poss throttle pos sensor prob./ could also be problem w/fuel pump not pumping enough fuel at high speed. poss fuel filter clogging also. have someone check pump ...

...GMC 5.3 Liter with my oil pressure reading almost maxed out? Any suggestions on what could be the issue/issues with why that is? Am I putting my truck engines at risk by driving it and should work to ...

...gmc envoy 4.2 liter 6 cyl is not running properly. It seems as though it may be due to fuel pressure problems Have you ever changed the fuel filter ? Do you smell gas ? Check the vacuum hose at the ...

...gmc envoy 4.2 liter 6 cyl code reads bank 1 too lean too lean can be from leaking manifold, vacuum leak, injectors on that bank, low fuel pressure Vacuum leak or O2 sensor is dieing. On 4.2 engines ...

GMC SIERRA 6 LITER V8? 5w30 in cold months 10w30 in warm to hot months. High milage if its over 75,000 miles. An what was said trucks usually at 205,000 miles needs new engine an that is normal is not

...GMC Yukon Denali engine reduced power While driving, bells will ring and I will get a message that my engine power has reduced and my the engine literally stops. There is no warning. If you are in ...

...6 liter chev I have 60,000 miles on this engine. it started using oil at 55,000 up until then I did not have to add oil in between oil changes. There is a lot of talk that GM has problems with these ...

...GMC Envoy 4.2 liter 6 cyl and code for cylinder 2 misfire popped up . The engine is running very rough, lacks power and the exhaust sounds loud. My check engine light is flashing, I have changed all ...

6 liter engine - recently had "low engine power" error message pop up so took to the dealer who diagnosed as failing throttle, so they replaced. Now, the shift points seem to be delayed and the engine