GMC 1990 Diesel 3/4 ton suburban.Dead batteries. Trickle charged for 2 hours. Trickle Charger was hot and charge up to 15. Car started up immediately idled for maybe 45 min. went dead again. I heard a low groan motor still running but no lights and gage not charging. It has been sitting 3 months. Has something leaked "evaporated" Not charging.

Asked by Nov 02, 2015 at 02:26 AM about the 1990 GMC Suburban R2500

Question type: Maintenance & Repair

Truck won't start. Starter: click,click,click etc.Trickle Charger says 12
amps. After about 2 hours Trickle Charger up to 15 amps and Trickle
Charger was HOT. Batteries are fairly new. Truck been sitting in garage
not driven for 3 months. Water in Batteries. Busy, I let it idle for 45 min.
and then started to drive but head lights were dimming then went out
drove it 20 feet to park and it had a groaning with maybe a metal on metal
sound. Didn't see leak on floor. Its in good condition and has always been
reliable. It has had jingle bell sounds lately when accelerating & coasting.

1 Answer

74,705

Sounds like the battery shorted out internally, drawing that many amps. on trickle charge for so long is a good indication. Once you get the battery checked out, make sure the charging system is in working order.

Your Answer

GMC Suburban Experts

  • #1
    LouB
    Reputation
    1,380
  • #2
    Larry Thibert
    Reputation
    230
  • #3
    ShadetreeMech
    Reputation
    210
View All

Related Models For Sale

Used Chevrolet Suburban
372 Great Deals out of 22,917 listings starting at $1,999
Used GMC Sierra 1500
1,021 Great Deals out of 66,401 listings starting at $2,495
Used Ford F-150
2,597 Great Deals out of 197,984 listings starting at $1,300
Used Ford Explorer
931 Great Deals out of 69,193 listings starting at $1,295

Used Cars For Sale

1996 GMC Suburban For Sale
17 listings starting at $3,995
1994 GMC Suburban For Sale
7 listings starting at $4,233

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.