Chevrolet Forum - Chevy Enthusiasts Forums

Express, Savana & G-Series Vans Offered in both a full size van, or a large box truck, the Express is the modern GM workhorse.

Chevrolet Express
Platform: GMT Van

Check engine light, BRAKE light, speedo bouncing

Thread Tools
 
Search this Thread
 
Old September 13th, 2021, 12:27 AM
  #1  
CF Beginner
Thread Starter
 
Squeezee1's Avatar
 
Join Date: Sep 2021
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Default Check engine light, BRAKE light, speedo bouncing
I drive a 2004 3500 express box truck. At 70 mph I let off the gas and the check engine light flashes, the BRAKE light comes on and the speedo starts bouncing between 80 and 40. After about 2 minutes the BRAKE light goes out, check engine stays on and speedo stops bouncing. Any ideas?
Squeezee1 is offline  
Reply Like
Old September 13th, 2021, 3:04 AM
  #2  
Super Moderator
 
mountainmanjoe's Avatar
 
Join Date: Feb 2017
Posts: 6,174
Received 667 Likes on 605 Posts
Default
scan the check engine light
mountainmanjoe is offline  
Reply Like
Old September 13th, 2021, 8:30 AM
  #3  
CF Beginner
Thread Starter
 
Squeezee1's Avatar
 
Join Date: Sep 2021
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Default
We were going to do that later this morning. I’ll post what we find.
Squeezee1 is offline  
Reply Like
Old September 13th, 2021, 7:50 PM
  #4  
CF Beginner
Thread Starter
 
Squeezee1's Avatar
 
Join Date: Sep 2021
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Default
Originally Posted by Squeezee1
We were going to do that later this morning. I’ll post what we find.
Scanned it and it came back as Random misfire on 3 4 & 5.
Squeezee1 is offline  
Reply Like
Old September 13th, 2021, 7:54 PM
  #5  
CF Beginner
Thread Starter
 
Squeezee1's Avatar
 
Join Date: Sep 2021
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Default
P1380 rough road misfire data not available p300 random misfire

these are the codes that came back
Squeezee1 is offline  
Reply Like
Old September 13th, 2021, 8:12 PM
  #6  
CF Beginner
Thread Starter
 
Squeezee1's Avatar
 
Join Date: Sep 2021
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Default
What is a p1380 code
Squeezee1 is offline  
Reply Like
Old September 13th, 2021, 9:07 PM
  #7  
Super Moderator
 
mountainmanjoe's Avatar
 
Join Date: Feb 2017
Posts: 6,174
Received 667 Likes on 605 Posts
Default
have you tried google?

obd-codes.com
mountainmanjoe is offline  
Reply Like
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
01 silverado brake light
forkzz
1999 - 2006 (GMT800)
2
February 27th, 2021 10:51 AM
slip light and brake light on
VPasculli
TrailBlazer
11
January 6th, 2014 1:21 AM
brake light
gene2393
Silverado, Sierra & Fullsize Pick-ups
0
March 5th, 2012 10:41 AM
Emergency Brake Indicator Light
bkordrs
Silverado, Sierra & Fullsize Pick-ups
4
May 15th, 2011 11:05 AM
brake light
hatch92
S-10 & Blazer
2
July 3rd, 2006 10:45 PM
Back to Subforum
Express, Savana & G-Series Vans
View Next Unread
Change turn signal on 89 GMC Vandura




Advanced Search
Quick Reply: Check engine light, BRAKE light, speedo bouncing


Reply Closed Thread Share

All times are GMT -5. The time now is 1:40 AM.