Experiencing loss of power, especially going up hills

10

Asked by Mar 24, 2014 at 02:23 PM about the 2001 GMC Sierra 1500

Question type: Maintenance & Repair

I was driving my 2001 GMC Sierra 1500 the other day and it started having some performance issues. I noticed that the engine would lose a lot of power and almost die but then it would sort of cough and pick up speed again. I haven't had this truck for long but it does have 210,000km on it.

4 Answers

11,115

Losing power under load. Your catalytic converter may be plugged. That would explain the power coming back after the rmp's drop and the back pressure releases. Just taking a swing at this one..

1 of 1 people found this helpful.
10

You may be right. I just did a web search on that and part of what I learned is that the converter will rattle if broken/clogged. I have been hearing this off and on since I bought the truck but I was thinking it was something else.

1 of 1 people found this helpful.
11,115

I posted this in another thread, something you could try to troubleshoot: I would suspect a clogged catalytic converter. It's hard to diagnose a problem without data, but from what you're describing it's certainly a possibility. Catalytic converters clog over time from carbon build up. If you can, to test it, you can loosen the exhaust flange where the exhaust connects to the manifold creating a good sized gap. This will reduce the back pressure being created by the clogged cat. It's going to be loud as heck, so I wouldn't recommend driving it around town. But If the truck doesn't loose power with the exhaust separated, then you have your problem solved. Replace the cat.

1 of 1 people found this helpful.
30

Ok i have a 2004 gmc Sierra 1500 yesterday it just lost all power does not have no Juice won't even turn over checked everything that possible could be what do you think it could be

3 of 3 people found this helpful.

Your Answer

Add photo

Related Questions

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 68,199 nationwide Sierra 1500 listings starting at $2,484.

ZIP:

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 5,010
#2 John Saffrahn
John Saffrahn
Reputation 3,540
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 3,150
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,718 Great Deals out of 175,749 listings starting at $1,250
Used Ford F-150
2,191 Great Deals out of 206,316 listings starting at $1,499
Used GMC Sierra 2500HD
112 Great Deals out of 14,005 listings starting at $2,650
Used Toyota Tundra
440 Great Deals out of 34,312 listings starting at $2,700
Used Dodge Ram 1500
454 Great Deals out of 11,152 listings starting at $700
Used Toyota Tacoma
541 Great Deals out of 40,814 listings starting at $2,495
Used GMC Yukon
374 Great Deals out of 18,226 listings starting at $2,950
Used Chevrolet Silverado 2500HD
307 Great Deals out of 27,740 listings starting at $1,250
Used Chevrolet Tahoe
548 Great Deals out of 29,234 listings starting at $1,699
Used Ford F-250 Super Duty
343 Great Deals out of 46,938 listings starting at $1,895
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217
Used GMC Sierra 1500HD
7 Great Deals out of 115 listings starting at $2,995

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
43 Great Deals out of 44,111 listings starting at $20,121
2016 GMC Sierra 1500 For Sale
78 Great Deals out of 3,645 listings starting at $17,888
2015 GMC Sierra 1500 For Sale
102 Great Deals out of 3,926 listings starting at $15,400
2014 GMC Sierra 1500 For Sale
118 Great Deals out of 4,152 listings starting at $14,495
2013 GMC Sierra 1500 For Sale
66 Great Deals out of 2,009 listings starting at $9,600

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.